Material Handling Within the Winery and Vineyard

man lifting crops using a forklift

By: Gerald Dlubala

“Most winery owners don’t see the whole picture when considering the best ways to move their product around the winery and vineyard,” said Sam McHenry, president of Accurate Forklift Inc. McHenry has been providing material handling equipment to the wine industry for decades, even designing some of them himself. “There’s much more to think about in material handling than just how to get something from one point to another, and it comes down to the location’s characteristics and intended layout. When recommending the right forklift for the job, we look first at the harvest and apply the Christopher Columbus principle, meaning the world is not flat and will tremendously affect your equipment stability given the chance. Is the area that we are working on flat or paved? If so, we recommend an electric-powered forklift or pallet jack with cushion tires. If it’s not, and you’re expecting to use your equipment off-road, in fields or over rough or uneven areas with potholes, then you’ll need fork trucks with larger, air-filled tires for stability.”

  “The type and size of fork truck needed are also determined by your harvesting plans and equipment used,” said McHenry. “Will you be harvesting during the day or night? Do you anticipate harvesting for eight hours a day? Fifteen? Around the clock? Current electric-run equipment will generally give you about eight hours of runtime before needing the same amount of time to recharge unless you have a backup battery, secondary truck and hoisting equipment on hand to change batteries, a pricey option. Propane-powered trucks can be kept running with a simple tank change or refill at an on-premises propane tank station with the proper filling attachments and safety precautions. Gas or diesel options need only extra fuel on hand.

  McHenry said that vineyard owners also need to consider their field-loading activities. How is the loading area constructed? What are the widths of the rows? Your material-handling equipment has to be able to maneuver within these parameters. What type of bins does your vineyard use for their grapes? Do you use the Valley Gondola type of bins? Many smaller wineries use the macro-bins. When you combine the bins’ and grapes’ weights, you must ensure the equipment you’re using is rated for that weight, especially if the terrain and landscape will play a part. McHenry tells The Grapevine Magazine that he regularly sees accidents happen because vineyards use improperly rated equipment for the conditions and tasks they are performing.

  “It gets down to physics at that point,” said McHenry. “The type of landscape and terrain you’re working on and the type and size of holding bins you use determines the capacity level needed of your fork trucks. Anything less runs a high risk of overloading your equipment, possibly risking the health and life of the equipment operators and nearby workers. This same principle holds for the attachment used for dumping your harvest. Using rotating attachments, they must be able to reach and dump where you need them. Forward dumping bins have become popular because of their easier, more predictable use. Likewise, presses and fermentation tanks come in different types, weights, sizes, and volumes, making them all unique in their handling needs. To properly size the equipment, we have to consider the load centers, heights, and ease of movement around the tanks. For example, I was responsible for getting fork pockets added into the design of the egg-shaped fermenters for safer movement and positioning. Until then, these awkward-shaped fermenters were moved with forklifts, some undersized, and straps that wrapped around the egg shape. It wasn’t a very safe or ideal situation.”

Barrel Storage and Manipulation Equipment Requires Planning

  Barrels come in all different sizes, shapes, weights, and volumes and can be used for storage or in barrel fermentation, and the type, use, and storage methods that the winery uses will determine the type of equipment needed. Wineries can store barrels in their barrel rooms, warehouses, or caves in pyramid stacks, individual rows, or two-to-four-barrel racks, depending on their physical location and production capabilities. The process of in-barrel fermentation requires other aspects of material handling equipment, including side grabbers, barrel rotator clamps, and more. As with vineyard specifications, aisle widths, backup, and turnaround space are all important when choosing the proper handling equipment for the space.

  “The process is tedious, demanding focus, planning, and calculations, including the choice between equipment rental or purchase,” said McHenry. “Talk with experienced professionals in the industry and other wineries that currently use the equipment you’re considering to get honest feedback about use in real situations. The result will be a safer, more ergonomic, more efficient workplace that will experience increased production and less waste”.

Racking Increases Square Footage Efficiency 

  Greg Weinerth is president of Enterprising Solutions, a multi-faceted professional services company providing warehouse and storage solutions to all industries, including the craft beverage and wine industry.

  “Racking can be as simple as the common rack found in any commercial kitchen or production facility, to pushback racks that save or eliminate aisle space by allowing pallet storage up to six pallets deep, to complete systems featuring drive-in racks,” said Weinerth. “We know that square footage is expensive, so it’s critical to talk to a professional for layout efficiency, including aisle depth and width. If the winery or vineyard already has the equipment that they’ll use for handling the product, then obviously we need to factor that into the racking layout and plan.”

  Weinerth tells The Grapevine Magazine that pallet racking sounds simple, but it demands a floor plan that fits in conjunction with your winery’s specifications. For example, Weinerth says that when formulating a workable and efficient layout, you must be aware of the building or storage area’s height restrictions, aisle width needs, and intended machinery use. The installation of a new or replacement racking system may be subject to getting the proper permits, including reassessing the existing fire sprinkler, egress, and evacuation systems.

  Additionally, many locales now require a seismic evaluation, including a torque test proving the safety of the racking anchors. Structural engineers usually perform these evaluations and are mandated at the municipal level depending on the winery’s proximity to past and potential seismic activity.

  “And we all remember the old way of providing a solid deck in vertical racking by laying plywood down as a base between the supporting members,” said Weinerth.  “That isn’t allowed anymore due to fire regulations. Wire decking is the preferred choice because it allows water from the fire sprinklers to travel down and through the racking to impact all stored products. For that same reason, your palleted product can be stretch wrapped on the sides but should not be stretch-wrapped over the top of products or cases on the pallet. Water must be able to access the product on the pallet as well. A typical business owner may not have the specific, relatable knowledge that a quality, experienced material provider will know about and walk them through.”

  Weinerth said that he sees the popularity of direct-to-consumer shipping affecting the type of racking systems that wineries are now choosing. Mini pick systems are gaining attention and popularity because of the possibility of offering a direct-to-consumer wine club subscription service. They can ship a subscription box filled with the consumer’s choice of wines directly to their most loyal consumers. When not able to be done by hand, the picking and packing usually require equipment like a stand-up, narrow-aisle lift equipped with a picking mechanism.

“Larger production wineries can benefit from racking systems that allow a driver to load the palletized product into the racks from one end and then pull those products from the opposite end, ensuring that older inventory is used first. Also popular with larger production wineries is the use of self-guided vehicles, electric-powered material handling machines that can unload, locate and inventory products in one task, which immediately updates the winery’s accounting and inventory system in real-time before moving on to its next task. This type of automation is becoming more accessible to the general market and will soon be able to be applied to a broader number of systems and be able to be used on a 24/7 basis if needed.”

  Weinerth said that additional considerations that a winery or vineyard must make in determining material handling needs include the type and position of loading docks used and if there are any clearance issues, turning areas or landscape limitations that necessitate the use of ramps or specialized equipment. Generally, standard gravity-operated conveyor systems are adequate for the needs of wineries.

Multi-Use, Ergonomic Equipment Increases Efficiency and Productivity: Bishamon Industries

  “Care inside the winery must be equal to the care in the vineyards,” said Brian Dedmon, director of sales for Bishamon Industries Corporation. “There are two main pieces of equipment we see used within wineries that fill most of their needs daily, our EZ Loader line of self-leveling pallet positioners and our Uni Lift pallet lifter, positioner and transporter.”

  Bishamon’s EZ Loader line of self-leveling pallet positioners are popular choices for everyday winery tasks like loading or unloading cases. It features a 4,000-pound capacity and adjusts by way of a self-contained air system that the user can fill with a bicycle pump eliminating the springs and mechanical aspects of other positioners that routinely wear out. In addition, the EZ Loader can be quickly

moved and easily positioned with a forklift as a side table for packaging functions or anywhere a little extra table space is needed, like moving product from conveyor to pallet or taking it off of the line.

  “Our positioners also offer options including square platforms instead of the circular designs, FDA compliant tops or stainless-steel designs,” said Dedmon. “With the portability and ease of adjustment, we can increase productivity while helping to eliminate production safety risks and overall worker fatigue, leading to fewer compensation claims.”

  “Our UniLift is a multi-use piece of machinery wrapped into a hand-powered, battery-operated pallet jack,” said Dedmon. “It’s a pallet lifter, positioner and transporter all in one unit, and as far as I know, it’s the only unit like this that works on closed bottom pallets. It can lift and transport a pallet without straddling it because it contains outriggers that the user deploys when needed. These outriggers allow wineries to create tighter work cells and better utilize their square footage. More available square footage means greater efficiency with more lines and increased production using fewer person-hours. The UniLift can also raise and lower pallets during stacking or unstacking, creating an ergonomically beneficial work site.”

  Bishamon Industries provides quality, innovative ergonomic products that enhance worker safety while improving productivity in industries that include the wine and craft beverage sectors from the company headquarters in Ontario, California.

Undiscovered Gems: Wine Regions of Africa 

push pinned in madagascar

By: Hanifa Sekandi

Some say that South Africa is the only wine region in Africa that you should venture to if you ever make it to this beautiful continent. Is this true? It might be if you are unaware of the breathtaking vineyards in other countries. Viticulture in Africa has barely scratched the surface. It is not as widespread compared to North American and European wine markets. Both continents have lucrative and renowned wineries. As winemakers strive to tip the scale in competition, it is not surprising that wine savants have their eye on what many call the Motherland, where all things began. There is no question that the climate in many African countries is ideal for vines to grow. And harvesting biodynamic wines is also possible since an existing diverse ecosystem permits this with ease. Also, life in Africa is deeply-entrenched with nature. In addition, there is an understanding that all species must live in harmony. The great vineyards in Africa do not rule those lands. They become a part of its history as they plant their roots in ancient mineral-rich soils.

  When people think of diversity in viticulture, they generally stay within the framework of wines made in North America or Europe. Entry into the wine market on a global scale is easier for these regions. The dominance of such wines has nothing to do with quality at times. Although, one cannot say that a vintage bottle of Bordeaux made from a prestigious winery in France is not worth every penny. South African and Moroccan wines have created a buzz, but there is still more to discover.

  Thanks to the evolving times, social media and the internet document many undiscovered gems. This allows one to see that the wine industry has barely touched the edge of exploration and possibility. It is also a surprising notion since a form of wine has been made for thousands of years in many countries worldwide. What brings all these nations together? European travelers bought their vines and their winemaking to them, thus planting an interconnected web of vines and winemaking traditions globally. 

  Come along and explore just a few undiscovered, breathtaking and small but mighty wine regions in Africa. The first stop is Madagascar, and finally, Ethiopia on this new adventure. They are contenders for sustainable, organic and biodynamic winemaking. Sustainable practices exist in these regions out of necessity. As this movement takes hold globally, winemakers who want to cut down on waste while still producing wines that respect the land and allow nature to flourish freely may also adopt these sustainable practices.

Wines Of Madagascar

  Winemaking in Madagascar started with the French colonialists. The first vineyards are said to have been established by Jesuit missionaries. The intention for growing wine initially was not for commerce or how one enjoys wine today. Records from this time show that the sale of wine at the Maromby Monastery was a source of income for

the monks. Large-scale wine sales in this region did

not occur until after the emancipation from the French in the 1960s. The Swiss saw an opportunity on this island. They intended to rebuild through a development aid program in the mid-late 1960s. Some would say it was a short-lived enterprise since they withdrew from this program in 2011. Unfortunately, even with the aid, they did not make significant headway in the wine industry. Their exit left a big gap for winemakers who have not been able to gain the momentum needed to compete on a large scale. The wine produced in Madagascar is geared towards the local market and tourists. Rum is the main export.

  Vines are planted on the highlands on steep slopes and in areas with cooler altitudes. This helps prevent fungal disease and high levels of alcohol in the grapes that have not reached the ideal ripeness for harvesting. Pineapples, rice paddies, bananas and sugar cane are also planted nearby. The plant diversity among the vines demonstrates that vines can co-exist and thrive. The need to clear lands simply for grapes is not necessary. Perhaps, this is a great initiative to model for newer winemakers considering biodynamic practices. It is also an opportunity to increase their profit margins by selling other fruits grown on their land at local farmers’ markets or having an on-site shop. Yes, Madagascar is behind and nowhere near being considered successful in the wine market. But this wine region does provide a gateway to new ways to create biodynamic vineyards. Rice paddies are situated in the low-lying, damp valleys below vines nestled on the hillsides. Both benefit from the placement since the terraced slope runoff allows the rice to thrive.

  Since Madagascar is off the East coast of Africa in the Southern Hemisphere, grapes are harvested in the rainy season during February. The process of winemaking here is unique. Winemakers here allow their senses and instincts to determine when grapes are ripe—a simple yet effective method to replace a refractometer. From here, grapes are fermented in large concrete vats, where a mechanical press is used for extraction. The liquid is transferred to another concrete vat that contains sugar and preservatives. It will further ferment for approximately six months. The richness of color in the red wines made here is due to the skin remaining on the grapes during fermentation. Ready-to-bottle wine is bottled in previously used bottles by hand. The entire bottling process is done by hand, including labeling and corking. Wasting bottles is not an option. The labels of old bottles are peeled off, and bottles are cleaned and reused.

  Seven of the eight wineries on this island use a French-American hybrid grape. Only one winery, Clos Nomena, uses Vitis vinifera, a European grape varietal touted by sommeliers, who say that the finest wines are made with these grapes.

The Growing Vines Of Ethiopia

  Tej is a traditional Ethiopian wine once consumed by the nobility and that dates back centuries. It consists of water, gesho and honey. Gesho is a plant that is similar to hops. Although this drink does not contain grapes, it is still classified as wine in this region. Many liken it to mead, an alcoholic beverage made by fermenting water, grain, spices, fruits and honey. Although wine in this country has existed since the first millennium A.D., the presence of large-scale vineyards with methods attributed to European wine cultivation only began in the late 1950s. The oldest and most well-known vineyard in this region is Awash Winery. It was established in 1956 under the helm of real estate developer Mulugeta Tesfakiros and politician Ras Mesfin Sileshi. In 2013, it was acquired by the Blue Nile company and partnered with 8 Mile, a company chaired by legendary musician Sir Bob Geldof. This partnership aims to expand its global reach and scale of production by building another distillery.

  Approximately 10,000 million bottles of wine, primarily consumed within Ethiopia, are produced annually by Awash Wineries. The second winery, Castel Winery, produces the remaining bottles, approximately two million bottles annually. It was established in 2007 and located in Zway, south of Addis Ababa. Awash Winery is in Awash Merti Jersu. The proximity to the equator allows for harvest to occur twice a year due to a shorter vegetation cycle. Harvest occurs from June to July and from November to December. This is a great benefit that European vineyards do not get to experience. Perhaps this makes up for some of the other shortcomings that the Awash vineyards must navigate. Harvested grapes are transported for seven hours down the vineyard winery path. It is a somewhat long journey that leaves them vulnerable to the scorching sun burning their skin. Even with a protective shield placed on top, the sun’s powerful rays can still permeate this barrier. To ensure that the grapes are cool enough before pressing, they are left overnight in the truck, a method that offsets the day’s travel under the beaming sun. At the Awash Winery, there is a small selection of wines offered. Axumit Sweet Red Wine is a much-loved wine by Ethiopian locals. Similar to Madagascar wineries, the bottles are recycled for rebottling purposes. The bottles themselves are collectibles since some have been used for over five decades – true history in a bottle indeed.

  Castel Winery is a partnership between the Ethiopian Government and the Castel Group. Partnering with a company responsible for making and distributing premier beer and wine brands is a formidable venture. Both parties believe that this winery will be able to compete with South African wineries since it is in a region located 1,600 meters above sea level and where temperatures sit evenly at around 25 degrees Celsius each year. The sandy soils also benefit from the approximately 650 millimeters of annual rainfall. Bordeaux vines were imported and planted in this region and occupy most of the space in these vineyards. There are two ranges of wines produced at Castel. The most notable wine is Rift Valley. It is a premium wine aged in French oak barrels. With the help of the European Union’s Everything But Arms program and AGOA program, Castel Winery plans to expand into European and North American markets.

  The undiscovered gems for African wineries do not stop in these two countries. As you know, when a seed is planted, growth is inevitable. Other African countries are taking note. So, this journey into the unknown world of the Motherland’s wineries will continue. Like the bottles that have circulated in the hands of many, there is more to this story. For now, dream of an evening in Antananarivo, Madagascar spent drinking Clos Nomena-made wine or a day in Addis Ababa, Ethiopia having your first sip of Tej.

Hunting the Great White Grape 

2 glasses of wine

By: Tod Stewart

So, what if, as a winemaker or grape grower, you could create the “perfect grape.” Since it’s summer, we’ll narrow it to the perfect white grape (assuming that more people purchase white wine during the summer and that purchases ensure you remain a winemaker or grape grower). Where would you start?

  Okay, how about yields? If your business model is based on high volumes of drinker-friendly wines, a vigorous vine delivering impressive volume would probably be desirable. Modern fermenting techniques would help you deliver white wines that, while lacking real complexity, would give you a decent, quaffable light white wine that may be just the right background in a blend with more assertive varietals.

  However, if your aim is also to craft lower volumes of wines that will impress the true connoisseurs, you’d want this same grape to behave slightly differently when crop volumes are reduced. So, this super-grape would have to double as both a workhorse and vinous royalty. It should also be able to thrive in various climates, be they those of California’s Central Valley or the upper (and lower) wine belt limits. From Northern Europe to South America and New Zealand.

  Since winemakers around the world vinify a plethora of styles, übergrape should be up to being treated much differently in different hands. Light and dry. Dry and complex. Sweet across the spectrum – from barely off-dry to rich, unctuous, and lush. Sparkling as well, from dry to sweet. And depending on the audience, it should give wines that can be consumed young but that can also age and develop with both short and long-term cellaring. Let’s throw in an ability to reflect the nuances of various terroir just to up the ante a bit more. Oh, and good wind and disease resistance, right? It would be a great grape indeed.

  The good news is that you don’t have to run off to your nearest viticulturist to plot which currently existing grapes could be cross-pollinated, hybridized and grafted onto which rootstock to result in this Frankenfruit. It’s already here. Say hello to Chenin Blanc, probably one of the most underrated and under-appreciated white grapes out there.

  I had the opportunity to learn about – and taste the wines made from – this “magical chameleon of a grape” (as Jancis Robinson, MW calls it) during a three-week journey through France, starting in the Loire Valley – the ancestral home of Chenin Blanc.

  If first-hand confirmation is in order, let me confirm: traveling in/out/through Toronto’s Pearson International Airport has been pretty much akin to traveling through Dante’s Fifth Circle of Hell as of late (though you’d probably still have your luggage in the Dante’s Hell scenario). I suppose I got off lucky in that I was only delayed an hour flying to France and only had to sit on the tarmac for 45 minutes or so upon returning before spending only about another hour or so clearing security. As luck would have it, my luggage actually made it back with me (a good thing in that it was packed with wine, pastis, marc, olive oil and all sorts of other things). It probably helped I wasn’t flying Air Canada (though Air France was running out of in-flight food on the return leg).

  Anyhow, what brought me to France in the first place (other than several thousand gallons of jet fuel) was a media trip (“Val de Loire Millésime”) sponsored by InterLoire (Interprofesssion des Vins du Val de Loire – in long form) – the body responsible for the promotion and development of the wines from the regions of the Nantais, Anjou-Saumur, and Touraine. Now, before going any further, I think it’s important to set the record straight with regard to “media trips.”

  Being media comes with some perks (a robust – or even steady – paycheck is typically not one), and media trips – certainly in the eyes of non-media types – fit the bill. Airfare is generally covered, as is ground transportation. As are accommodations. As are meals. But let me assure you, these trips aren’t vacations. No way. You’re on someone else’s schedule and someone else’s dime. So, prepare to work.

  Early morning educational seminars and visits to numerous estates and vineyard sites (which may include a “hike” through said vineyards) are the order of the day. (As an aside, I’ve become wary of the word “hike” when followed by “though the vineyards.” These excursions can literally be a walk in the park or reach survival training endurance levels. The phrase, “Please ensure you bring suitable footwear” often indicates that the latter will transpire). Also, there are back-to-back tastings. Sampling over 100 wines per day (minimum) isn’t uncommon. It’s all tiring and sometimes exhausting, day after day.

  The look on your face suggests I’m not drumming up much sympathy.

  Anyway, over the course of my four-day Loire adventure, I was able to experience Chenin Blanc in all its vinous incantations and learned more about the variety’s lineage.

  I was based in the town of Angers, which is pretty much smack-dab in the middle of Chenin’s birthplace. Also known as Pineau de la Loire, Chenin Blanc is thought to have originated in the vineyards of Anjou, likely sometime in the ninth century, before spreading to vineyards in the neighboring Touraine region by the 15th century. In fact, the name Chenin Blanc likely came about due to plantings in vineyards near Mont Chenin near the famous Château de Chenonceau. Over the course of history, plantings of Chenin Blanc waxed and waned, largely due to the dictates of consumer tastes, but it has remained the white grape of the Loire.

  I had the opportunity to taste Chenin-based wines representing an extremely broad stylistic range. Susceptible to Botrytis cinerea (aka “noble rot”), the sweet, late-harvest wines of Anjou and Vouvray – and specifically Coteaux du Layon, Bonnezeaux, and Quarts de Chaume – I tasted showed layers of waxy, honeyed, spiced baked apple and, in some cases, an earthy, mushroom-tinged nuance. As glorious as many of them were, what intrigued me the most were the dry Chenin Blancs, some of which were like nothing I’ve ever really tasted before.

  The Saumur Blanc wines of Domaine Arnaud Lambert – including the Coulée de Saint Cyr 2018 Blanc, Clos de la Rue 2018 Blanc, and Brézé Bourguenne 2018 Blanc – deserve (I think) special mention. All were gorgeously complex, dripping with floral/mineral/smoky/lanolin and stone fruit aromas and flavors, with rich, ripe, concentrated and beautifully balanced flavors to match. One thing about Chenin Blanc is that, even in some of the least expensive examples, an undeniable richness can be detected. Alas, Lambert’s wines are hardly the least expensive examples. At closing in on 50€ per bottle, the Brézé Bourguenne 2018 Blanc was (I think) the most expensive wine I tasted while in the Loire. That being said, I’ve tasted plenty of wines costing far more that delivered far less.

  Another property that caught my attention was Domaine des Fontaines. Vigneron Rousseau Vincent explained to me that the appellation his winery resides in – Bonnezeaux – was certified an AOC for the production of sweet wines only. Dry wines were not (yet) able to carry the Bonnezeaux AOC distinction. Vincent – and others caught in a similar predicament – are pushing for a change. Personally, as a consumer, I’d question if AOC status really matters (I’m sure there’s a reason it does), especially having tasted the Domaine’s outstanding Cuvée Landry 2020 Blanc (which carries the broader Anjou appellation designation). This was an amazingly concentrated and deeply flavored wine, with a full, ripe and viscous texture and of considerable length. At 10.50€, this wine was a steal. If it were crafted from a different grape, country, or region, it could likely command double that price (or more).

  Though top-quality dry Loire Chenin Blanc wines are becoming more the norm these days, some have been known for quite some time as perhaps the pinnacle of the dry style. And here I’m talking about those of the Savennières region. Comprised of three AOCs – Savennières, Savennières-Roche-aux-Moines and Savennières-Coulée-de-Serrant. The total area under vines for all three regions combined is less than 400 acres. Savennières-Coulée-de-Serrant in itself is home to a single estate managed by Nicolas Joly. It covers a mere 17 acres. But it’s within these boundaries that Chenin Blanc shows what it can deliver when planted within a very particular terroir. In fact, the wines are typically so influenced by the schist soil, vineyard exposure, and relatively cool temperature of the region that “earth,” rather than “fruit,” is the most defining characteristic of these wines.

  Taste traditionally-made Savennières young wines, and you’ll wonder what the fuss is all about. When young, these wines typically fail to really impress (at least me). Sure, there’s lots of body and weight (many Savennières wines routinely top 14% ABV, some hitting 15%), but the screamingly high acid levels (typical of cool climate Chenin; maybe Chenin in general) and lack of any really opulent fruit makes them a little hard to warm up to.

In one session, I tasted 17 Savennières, mostly from young vintages (2019 and 2020). Some were pleasant enough (and some were obviously made to be a bit more approachable young), but it wasn’t until I hit the Loic Mahe Savennières Les Fougeraies 2016 that I found what I consider to be “classic” Savennières. The nose was nutty, with hints of caramel and buckwheat honey, underpinned with some mildly mushroomy notes that all wrapped around a distinctly mineral spine and buttressed by still crisp, dry acidity. If heavily-oaked Chardonnay is your thing, stay far away from Savennières. However, if you are looking for distinctive, age-worthy Chenin Blanc, step right up. I have some Savennières of the 2002 vintage in my cellar that are starting to show beautifully.

  Of course, the Loire Valley isn’t the only place you’ll find Chenin Blanc. I found it planted in the vineyards of Mas Cal Demoura in the Languedoc – the polar opposite end of France from the Loire (yes, I chose to extend my “tour de France” well after I left the Loire). It’s also the most widely planted variety in South Africa, where it covers at least three times (maybe more) the acreage planted in France. Traditionally, it was called Steen until it was discovered in 1965 that it was actually Chenin Blanc (for whatever reason, this made it even more popular). And all the attributes listed at the beginning of the story have resulted in it being planted far and wide.

  No matter where it sets its roots, Chenin Blanc is typically a cooperative and reliable vineyard addition that will do, vinously speaking, pretty much anything you want it to do while retaining a personality and uniqueness all its own.

When is the Correct Time to File for a Claim?

lone tree on a deserted area

By: Trevor Troyer, 
Vice President 
Agricultural Risk Management, LLC

When should I file for a claim? That’s a question I get a lot. Some growers think that they should wait until they know that they have a loss. They want to harvest to see if they have a loss. That is not the correct answer to me. You should turn in a claim as soon as there is a weather event or other cause of loss situation. This helps to document what is happening during your growing season as it unfolds.

  This spring in California there was a late frost/freeze event for several nights. Primary buds in many counties were killed. Some areas like Sonoma and Napa Counties had mild to moderate damage. Other counties in California had much worse damage. Oregon also had a lot of areas that were damaged. Some areas were quite severe with all the primaries frozen.

  Obviously if the buds were all frozen you should contact your crop insurance agent and have him open a claim up. But what about damage you are not sure about? You know that you will still make a crop but are not sure if it will reduce your tonnage by any large amount. Depending on your coverage level you may think that you won’t have a loss. At this point don’t worry about the deductible percentage of your crop insurance policy. Call your crop insurance agent and open up a claim.

  It is always better to have a claim open than not in this type of situation. There’s no way at this point in the season to determine how much your yield will be down. But if the claim is open and documented its better. This gives time to have an adjuster assigned, time to do an inspection and to document the damage. Damage done may not be as visible several months later. Damage can very well be cumulative as well. During the year you may have several weather events and other things that could reduce your yield.

  Here’s what it says in the Basic Provisions of the Common Crop Insurance Policy:

14. Duties in the Event of Damage, Loss, Abandonment, Destruction, or Alternative Use of Crop or Acreage

Your Duties -


(a) In the case of damage or loss of production or revenue to any insured crop, you must protect the crop from further damage by providing sufficient care.

(b) You must provide a notice of loss in accordance with this section. Notice provisions:

      (1) For a planted crop, when there is damage or loss of production, you must give us notice, by unit, within 72 hours of your initial discovery of damage or loss of production (but not later than 15 days after the end of the insurance period, even if you have not harvested the crop).

  Per the USDA Risk Management Agency you have from 72 hours of the original cause of loss or until you discovery it and up to 15 days after the end of insurance. I do not recommend waiting till 15 days after the insurance period. It does happen though and I am sure I will have growers do it again. I have had vineyard owners call me and say that their tons are down for a certain variety. Then we have to piece together what happened. What was the cause of loss? When was it? Was this the only thing or were there other weather events? Is the loss only showing up only on one variety?

  Losses will get paid but it is much easier on everyone if you report causes of loss right after they occur. That doesn’t mean you have to know for sure that you will have a loss, just that some event happened that may cause your crop to be reduced.

Here are the Causes of Loss out of the Grape Crop Provisions from the USDA RMA:

10. Causes of Loss.

(a) In accordance with the provisions of section 12 of the Basic Provisions, insurance is provided only against the following causes of loss that occurduring the insurance period:

(1) Adverse weather conditions;


(2) Fire, unless weeds and other forms of undergrowth have not been controlled or pruning debris has not been removed from the vineyard;


(3) Insects, except as excluded in 10(b)(1), but not damage due to insufficient or improper application of pest control measures;


(4) Plant disease, but not damage due to insufficient or improper application of disease control measures;


(5) Wildlife;


(6) Earthquake;


(7) Volcanic eruption; or


(8) Failure of irrigation water supply, if caused by an insured peril that occurs during the insurance period.

(b) In addition to the causes of loss excluded in section 12 (Causes of Loss) of the Basic Provisions, we will not insure against damage or loss of production due to:

(1) Phylloxera, regardless of cause; or


(2) Inability to market the grapes for any reason other than actual physical damage from an insurable cause specified in this section. For example, we will not pay you an indemnity if you are unable to market due to quarantine, boycott, or refusal of any person to accept production.

  Number 1 on the list is Adverse weather conditions. This could be just about anything, frost, freeze, drought, excess moisture, hail etc. Fire is listed as well and because of this there can be damage many miles away from the fire due to smoke. Insect and disease damage are covered but you must show that you have application records for spraying etc. Wildlife is another one that can cause problems – deer, raccoons, birds and so on. I have even had a claim turned in for a bear. Earthquake and Volcanic Eruption I have never seen a claim turned in for. I am sure, unfortunately, that there will be one for an earthquake. Number 8, Failure of irrigation water supply, is something that can be a big problem for growers. Certain areas in California and Washington State rely heavily on irrigation. If there is a drought and your well or reservoir dries up then that is a payable cause of loss.

  Don’t wait to contact your agent about a situation or adverse weather that may reduce your crop. That is what we are here for! For more information please contact Agricultural Risk Management LLC.

Office: (239) 789-4743

Email: info@agriskmgmt.com

Website: www.agriskmgmt.com

Diving into Winery Water Usage and Treatment

winery waste water

 By: Becky Garrison

In recent years, Pacific Northwest-based wineries have faced unprecedented water issues as regional droughts continue to deepen and regulations have become stricter in an effort to limit surface and groundwater contamination and promote more sustainable practices. During the Oregon Wine Symposium, held virtually from February 15 to 17, 2022, a session titled Diving Deep Into Winery Water Usage & Treatment offered a summary of this current situation pertaining to water use and how wineries can manage their water use and treat wastewater.

  Panel moderator Emily Terrell, associate winemaker for Brittan Vineyards (McMinnville, OR), opened the session with a brief summary of the current state of water use in the Pacific Northwest. A typical winery on the West Coast uses between three to 10 gallons of water per gallon of wine produced.

  Regulations regarding water may increase due to municipal handling limits and local standards for discharge. Also, over the past few years, Washington State and California both developed new general permits. These are tiered winery permitting systems, with fees, monitoring, inspection and at least quarterly analysis of water discharged from the winery.

  These standards help protect groundwater and surface water based on discharge methods and the specifics of the location. Such standards are necessary as improperly treated wastewater can lead to a host of complications, including:

•   Damage to soil and crops

•   Kill aquatic life.

•   Contaminate surface water and groundwater.

•   Degrade infrastructure in municipal treatment plants.

•   Overwhelm municipal treatment systems.

  In a general sense, the easiest solution to improve winery water use is to use less water. By tracking water use, wineries can see where and how they are using process water, which can help identify ways to become more efficient. Sometimes this is a simple fix, such as adding water-saving spray guns, reducing wine hose diameter or fixing leaky hose manifolds. Reconsidering the way wine lees (the solids remaining after fermentation) are collected and disposed of can also dramatically decrease the volume and energy intensity of the wastewater, including taking advantage of a collection service available in some areas (not Oregon, unfortunately).

  Finally, once the wastewater is generated, how can the energy load be lightened downstream? This comes down to neutralizing pH, removing the solids and perhaps adding a digestion step to further deplete the nutrients before discharging into a controlled environment or municipal system. As droughts intensify, some wineries install reclamation systems to treat, digest, filter and reuse all or a portion of their process water. 

Treating Wastewater In the Winery

  In his presentation, John Haslett, wastewater manager for 12th & Maple Wine Company (Dundee, OR), offered an overview of their winery wastewater treatment process, including the chemicals, equipment and tests involved in this process, which discharges into a small municipal system with strict requirements. The primary wastewater chemicals that he uses are magnesium hydroxide to neutralize the pH and polymer to bind and remove the majority of the solids prior to digestion.

  At 12th and Maple Wine Company, they start by mixing and prepping their wastewater in a mixing tank. By running the wastewater through a side screen into their batch tank, they remove all of the large particles and treat it with magnesium hydroxide to neutralize the pH. Then, the water pumps through their Cavitation Air Flotation (CAF) device. The CAF is a long trough with a propellor that makes micro-bubbles, which float all the solids to the top after the polymer sticks them together. Next, the paddles scrape the solids off the top and remove them from the system into a solid waste/compost stream. Flotation removes 90 percent of the BOD, helping the bio system’s ability to digest by reducing process load and filtering solids leaving only dissolved solids for digestion. After that, the clarified water moves to their digestion system for a further reduction in Biological Oxygen Demand (BOD), or the amount of oxygen consumed by bacteria and other microorganisms during digestion under aerobic conditions in a defined period of time. By reducing this energy demand, the winery dramatically reduces the burden on the municipal treatment system downstream and increases the total volume of water it can discharge to the system.

  To keep up with the digestion demands of the wastewater stream, Haslett sometimes needs to add bacteria to the system due to changes in the microbe population due to upsets, such as adding or removing nutrients or a rapidly changing pH environment. Among the sources he uses to obtain bacteria are Clearblu and Aquafix. In his presentation, he quoted a statement from Clearblu regarding the types of recommended bacteria used in treating wastewater.

  Almost all commercially available bacteria blends only contain Bacillus strains. While Bacillus is an excellent treatment bacteria, it is best suited for treating fats, oils, grasses, and proteins. This is why they are primarily used in wastewater treatment plants. Brewery, winery and food processing waste contains sugars and carbohydrates in very high concentrations. This makes their waste vastly different from sewage treatment plants. The best bacteria for breaking down sugars and carbohydrates are Pseudomonas. Pseudomonas will digest these very effectively and reduce BOD levels far more rapidly.

  Historically, Haslett’s digestion system has consisted of a series of aerated holding tanks that the wastewater slowly passes through while undergoing microbial digestion. Recently, he trialed a new system called the BioGill, which consists of a space-efficient square tower filled with a ceramic matrix that pulls oxygen in passively and provides a stable environment for the culture to occupy while the wastewater slowly passes through. These units have been very successful in improving culture health and digestion time. Haslett cited the example of a pH upset, where the BioGills recovered in three days, whereas the old system would have taken approximately three weeks. They have plans to acquire additional BioGill units but are already taking advantage of the BioGill’s ability to seed the culture of the downstream holding tanks, providing for better overall health and an increased capacity for BOD reduction.

  Each week, Haslett tests the wastewater using several different tests. After getting the BOD numbers, he converts them into pounds of BOD and pounds of TSS (Total Suspended Solids) and then report this number when required by city and local governmental entities. Haslett’s optimization of the CAF, BioGill and digestion system continue to reduce these numbers, easing the burden on the city and making some water reclamation a not-too-distant goal of the winery.

  For smaller wineries with limited financial resources, Haslett stresses that the first priority is to adjust the pH. At the very least, get a small tank to use for holding, adjustment and mixing. A further investment would be a simple screen filter to remove the larger solids before dumping the effluent. He also emphasized that the BioGill is an accessible, low-power technology for smaller wineries looking to reclaim or further reduce their impact on downstream processing resources.

Reducing Processed Water

  Bob Coleman, technical winemaker for Treasury Wine Estates (Saint Helena, CA), delved into ways to reduce processed water in the winery. He proposed using in-place or in-line wine treatments to minimize the number of tank movements and, therefore, cleaning and water consumption. This avoids the need for more energy-intensive, solids-removal procedures, such as cold setting, decanters and centrifugation that require tank-to-tank transfers.

  To remove solids, this winery is exploring the use of a Jameson Cell. This is a high-intensity froth flotation cell invented for use by the coal industry. While a Jameson Cell can handle wine wastewater, Coleman sees how it can also benefit in reducing water use during wine production. Coleman envisions feeding wine juice in this small set of cells. Air or nitrogen gets entrained in this stream that’s in this downcomer, as they call it. Gas bubbles attach to the solid particles floating them to the top and allows removal as a solid waste stream. The clean juice then goes to the tank and gets inoculated right away.

  Also, Coleman references developing protein absorption columns designed for in-place protein removal. These columns have absorption material that will take out heat-unstable proteins. Then, wash out the proteins and reuse the column repeatedly. This process stabilizes the wine and eliminates the need for bentonite – and elimination of bentonite in our waste stream

  In addition, Coleman introduced a more efficient cold stabilization process (fluidized bed cold stabilization), a joint project with Professors Roger Boulton and Ron Runnebaum at UC Davis. This in-place cold stabilization process minimizes wine loss and refrigeration needs by using a small, dedicated chiller and counter-current heat exchanger. This avoids lowering the temperature on the main winery refrigeration loop, saving both energy and water. The potassium bitartrate crystals generated in the stabilization process can be reused to form a circular process.

  Coleman recommends electropolishing the tanks or purchasing them already electropolished. This keeps solids from attaching to the tank’s surface, thus reducing the water and chemistry to remove bitartrate, grape residue and biofilm stuck to the side of the tanks.

  In California, wineries can take advantage of a lees removal service. This involves squeegeeing the lees out of the tanks and putting them into totes, which a service takes away. They can recover bulk wine from it and then send the solids to compost.

  Coleman recommends potassium hydroxide over the cheaper sodium hydroxide for the basic wash and potassium bisulfate for the acid wash when assessing cleaning chemicals they use. After use, he suggests running both of these through a nanofilter or semipermeable filter that allows the ions, chemistry and water to pass through while leaving the dirty residue separated. It is possible to reuse the chemistry and water multiple times. After cleaning the tanks, putting these two washes together results in a pH appropriate for wastewater ponds and does not increase BOD or COD.

  Hydrogen peroxide at 0.5 percent can be used as a sanitizer, and this is lower than the three percent hydrogen peroxide available at the supermarket. What hydrogen peroxide isn’t used during sanitization will break down into water and oxygen. An onsite hydrogen peroxide generator can produce the amount of sanitizer needed, thus avoiding safety issues when transporting and handling higher concentrations of this chemical.

  The smart controls used on the six wastewater ponds allows for data collection. In particular, Coleman highlighted the need to clean the DO (dissolved oxygen) probes so that they can provide accurate feedback. After some exploration, they found cleaning heads that use compressed air to routinely in-place clean the probes. These DO probes trigger aerators when the oxygen drops below a designated threshold. This process control saves energy and increases the health of the ponds.

Cristom Vineyards: Creating ‘Wines of Place’

aerial view of a vineyard
default

 By: Nan McCreary

Ask any winemaker the secret to making great wine, and almost everyone will say, “It all starts in the vineyard.” But to Tom Gerrie, second-generation owner of Cristom Vineyards in Oregon’s Eola-Amity Hills, this is more than just an answer to a question; it’s a way of life. From knowing the soil in each of Cristom’s estate vineyards to naming the sheep that maintain and nourish the plants, the staff at Cristom is intimately involved with the origin of their sustainably farmed grapes.  “We encourage a proliferation of diverse life in the soil by adding compost to the soil and spraying compost teas and seeding diverse crops, for a few examples.”

  And this passion extends to the winery, where winemakers use centuries-old techniques to create the fullest expression of what this land has given them, namely pinot noir and chardonnay. It is this commitment to a “sense of place” that has put Cristom Vineyards on the international wine map and distinguished its wines as among the best in the Willamette Valley.

  Since the beginning, soil and site have been the hallmarks of Cristom Vineyards, which was founded in 1992 by Paul Gerrie, a petroleum engineer who had a strong passion for wine, specifically pinot noir. Gerrie’s goal was to grow and craft exceptional wines of a place that honor individual sites and old-world techniques. His search for a perfect location led him to a run-down vineyard in the Eola-Amity Hills appellation.

  “The site spoke to him,” according to Gerrie’s son, Tom, who took over the vineyard when his father retired. “It is geologically complex — the soil is mostly volcanic with some sedimentary and silt from the Missoula floods — and the elevation is similar to Burgundy, with a 500-foot in elevation change from our lowest vineyards to the top of our hillside at Cristom.  Our Vineyards rise from above 250 feet to 750 feet. Slopes are eastern-facing. My father was a visionary and could look past the untended vines and imagine a very, very special site.”

  When Paul and his wife, Eileen, purchased the vineyard, they named it Cristom after their two children, Chris and Tom. To achieve his goals, Gerrie hired Steve Doerner of Calera to be his winemaker. Not only was Calera one of Gerrie’s favorite producers, but the engineer and the biochemist also shared a deep-rooted respect for the land, the natural winemaking process and pinot noir. It was to be a collaboration that would last for decades.

  Since that inaugural vintage in 1992, the Gerries, along with winemaker Doerner, have constantly produced balanced, dynamic wines of intensity, structure and length. Besides pinot noir, they also make chardonnay (their flagship white wine), viognier and syrah. Cristom was the first to plant viognier in the Willamette Valley and the first to craft estate-grown wines and produced wines from viognier.

  Cristom grows grapes on 90 acres of vines across a total of 240 acres. Like Burgundy, their vineyards are definitely vineyards of place. The five estate vineyards – Eileen, Jessie, Louise, Marjorie and Paul Gerrie — are all named for members of the Gerrie family. Each vineyard is differentiated by the slopes, ranging in elevation from Louise at 290 feet and Eileen at 735 feet. In addition, each site is distinguished by natural variances in mineral-rich volcanic soils, with topsoils varying from 18 inches to 10 feet. This variation leads to diverse single-vineyard bottlings and harmonious cuvées that pull from each of the vineyard sites.

  Each Cristom vineyard is distinguished by climate. The Eola-Amity Hills AVA is defined by the roaring winds that funnel through the Van Duzer Corridor (a gap in the Pacific Coast range) that lowers vineyard temperature after warm summer days. The difference between daytime highs and nighttime lows can be 35 degrees or more, which helps preserve natural acids in the grapes and encourages them to ripen slowly.

  “Eileen, our highest vineyard, is defined by the wind,” Tom Gerrie told The Grapevine Magazine. “The grapevines can shut down if they get too much wind, and that preserves acidity. Skins get thicker, and tannins become more defined and complex. The grapes from Louise, which is at the bottom of the slope, are more protected because a large forest surrounds the vineyard. The wines are softer and plusher.”

  With top-notch fruit in hand — lovingly grown and picked by winegrowers who have more than 200 years of combined vineyard experience — the Cristom winemaking team, which consists of lead winemaker Daniel Estrin, assistant winemaker Chris Butler and veteran Doerner, strives to create wines that reflect both the vineyard and the vintage. The central tenets of the winemaking style include the use of natural yeasts and whole-cluster fermentation.

  “Using native yeasts can be risky,” Gerrie said, “but this gives a lot of diversity to our wines. One yeast may start the fermentation, then it dies out and another takes over, so we have different organisms driving the process the entire time. Different yeasts accentuate different terpenes and esters, which results in more complexity on the aromas and the palate.”

  Whole-cluster fermentation also adds complexity to the wine, Gerrie said. “We’re very passionate about whole-cluster fermentation,” he told The Grapevine Magazine. “By keeping whole berries intact longer, we get a long, slow fermentation. This gives us nice skin contact and extraction without maceration. The stems give a tremendous amount of complexity, with flavors of cinnamon, cardamom, clove and anise, or maybe black tea, herbal flavors or forest floor. Stems also provide additional levels of structure and complexity to the tannin profile, which balances well with acids and allows for greater age ability.”

  Typically, Gerrie added, Cristom destems roughly half of the fruit, depending on specific site, growing season, and the age of the vines. “Almost everything we do is based on the question, ‘Does this vineyard need this in this vintage?’” he said.

  Currently, Cristom vineyards produces around 20,000 cases of wine per vintage. They have distribution in 48 states and over 40 international markets. “We have some of the most widely distributed wines in the world,” Gerrie said. While Gerrie said Cristom would like to grow internationally, he is content to stay at current production levels. “It’s taken us 10 years to hit 20,000 cases, and we have finally found the right size for our business, our team and the land. We have hit a comfortable spot.”

  While growth is not on the horizon at Cristom, what is in the future — both short and long-term — is a commitment to organic and biodynamic farming. Tom Gerrie, who joined the Cristom Vineyards production team full-time in 2007 and became majority owner in 2012, began transitioning the estate to biodynamic farming in 2017. Today, using scientist Rudolf Steiner’s view of the integrated farm as a guide, Cristom has employed different farming methods — including agro-ecology, permaculture and integrative pest management — to enrich the soil and enhance the quality of fruit.

  “We believe and understand this place to be a whole eco-system that we are trying to elevate through the diversity of animals, soil health and cover crops,” Gerrie explained. “We want to showcase this piece of ground, make distinctive wines of place and empower people to know and understand that caring for something properly will help it last generations after we are gone.” At Cristom, sheep and chickens roam the grounds (and soon cows will join them), nourishing the vines with excrement and aerating the soil with their hooves and feet. Composting — made from vine cuttings, wood chips from fruit and oak trees, pomace from post-fermentation solids and mown cover crops — creates rich soils filled with microorganisms that enrich vineyards and gardens and even form the basis of a tea that can be sprayed on the canopy and underneath the vines. Employees give treats to the sheep — and even give them names — knowing that they are all part of something much bigger than any person, animal or plant on the property.

  Cristom’s current efforts in sustainability are all part of a 100-year plan of what the land will look like for generations to come. “What we’re doing on the property right now, for the company and for the brand, will put us in a stronger position 10 and 20 and 70 years from now,” Gerrie told The Grapevine Magazine. It’s a mindset that this team has taken on with tremendous responsibility, gusto and energy. The team knows they are stewards of a place and that we’re doing this together to create something distinctive, something that will carry on for years and years, when we expect them to be still naming the sheep.”

For more information on Cristom Vineyards, visit www.cristomvineyards.com

The Canadian Certification Program Application of Tissue Culture at the Nursery

man inspecting plant

By: Judit Monis, Ph.D.  

Last March I was invited to present for the Canadian Grapevine Certification Network (CGCN RCCV). Ethan Churchill, the CGCN-RCCV program manager did an introduction to their certification program standards.  Rob Haynes described the application of tissue culture and other practices at his Upper Canada Growers Nursery.  Robin Ross presented his research on tissue culture techniques. Tanja Voegel and myself did presentations on crown gall disease caused by Agrobacterium vitis.  While I have written before and plan to do an update on crown gall in the future, this article will focus on the Canadian Grapevine Certification Network program with emphasis on the application of tissue culture of the Upper Canada Growers Nursery in their production practices.

  In June of 2019 over two million dollars in funding through the Canadian Agricultural Partnership’s AgriAssurance program became available to start a network of virus-free grapevines in Canada.   The program would provide clean planting material to Canadian growers to assure the viability of their wine industry.  The funding is being allocated to both the interim verification standard and the long-term Canadian certification programs.  An interim verification standard consists of visual inspection and testing existent nursery blocks for the presence of Grapevine leafroll associated viruses (GLRaV) -1 and -3; Grapevine red blotch virus (GRBV), and Grapevine Pinot Gris virus (GPGV).  The sample collection and testing are performed in the laboratory of the Cool Climate Oenology and Viticulture at Brock University at a 50/50 cost share between nurseries and the CGCN-RCCV (until March 2023).  The network works with partner nurseries for general propagation and with vineyard growers and wineries for custom propagation of their own vineyard planting material.  The testing protocol is as follows: an initial random sampling of 10% of the vineyard that includes visual inspection and RT- PCR testing for the presence of the viruses of concern (GLRaV-1 and -3, GRBV, GPGV).  If 15% or more of the vineyard block is found to be infected it is dropped from the program.  If the vineyard block is found to be less than 15% infected, it is moved to the second phase of testing which consists on testing the entire vineyard. Samples are composites of leaves from five vines or canes from two vines.  The threshold for acceptance to the program is 0.1% (i.e., less than one infected vine in 1000 vines).  If the block is found to be infected more than 0.1%, the nursery has the option of testing each vine in the positive composite sample individually and remove the infected vines from the block.  Once the vineyard is tested and confirmed to be under the 0.1% threshold, plants propagated from those vines are deemed verified through CGCN-RCCV, Of course, similar to other certification programs there is no guarantee that the vines produced by the nurseries are virus free.  The program includes yearly audits with visual inspection and virus testing (10% random sampling) of the nursery blocks to ensure the lack of infection or spread to planting material.  Participating nurseries as well as available certified varieties are listed in the CGCN-RCCV website (see: https://www.cgcn-rccv.ca/site/about-cgcn).  Custom propagation of vineyard or winery planting material is subjected to a protocol similar to the one described for nursery blocks.

  Rob Haynes presented information on the practices of his family nursery operation (see: https://www.uppercanadagrowers.ca). The family purchased Mori Nursery in 2016 and started the Upper Canada Growers Nursery.  The use and application of tissue culture technology is what sets this nursery apart from others. It all stated ten years ago when the nursery had problems with the propagation of apples due to the presence of viruses and the fire blight bacterial pathogen.  At the time researchers at Cornell University had developed apple rootstocks that were resistant to these pathogens (Geneva rootstocks).  However, these rootstocks were difficult to propagate.  The company turned into using tissue culture (a collaboration with the University of Guelph) to develop their tissue culture program.  After a long and slow learning process the nursery is now ready to release two million tissue cultured propagated apple, hazelnuts, and plum plants (apples being the larger part of the production).  The company also has grapevines in the pipeline.  Although there is no timeline for the release of grapevines, so far, the process appears to be easier than the other crops produced at the nursery.  To summarize, the propagation material starts in the laboratory (as tissue culture plants), once the plants are rooted and grown to a certain size, the plants are transferred to the greenhouse in misting tents (the humidity must be kept very high.  The plants continue to grow in the greenhouse up to a certain point and are transferred to the field.  However, the plants are not planted directly in the field but inside “smart pots”. The plants (in pots) are constantly being screened from insects and the environment to avoid infection.  Therefore, from start to end, plants are being grown in a clean environment to ensure that pathogens are not present. In the fall the plants senesce and go dormant, being finally moved into a cold storage unit   The final planting product described is different from the dormant bare root plants that the orchard farmers are used to planting.  Instead, the plants produced are kept inside containers in peat /perlite mix media.  The roots appear to be further developed compared to plants grown in a standard production.  The technology is not new to the fruit (or grape) growing industry, but the nursery has developed specialized media that has made the process very successful. 

  The same process developed for fruit and nut crops at the nursery is being transferred to grapevines. The nursery approached CGCN-RCCV to work on the commercial release of certified grapevine planting stock.  The material being propagated was initially sent to the Canadian Food Inspection Agency for virus indexing.  This allowed the nursery to determine that they were starting with clean propagation material.  Indexed grapevine cuttings were sent to the University of Guelph who set up all the protocols to initiate the material in tissue culture (media, growth conditions, etc.).  Once the plants were initiated in tissue culture, the material was transferred to the nursery’s laboratory for further propagation and to develop a commercial product.  There are many advantages to the propagation system:  the nursery is starting with a clean product (virus tested), grown in a sterile/aseptic media (tissue culture) and subsequently grown in hermetic greenhouses (air showers and other mitigation practices to avoid the entrance of insect vectors/pathogens), to finally being moved to a screened area in the field.

  Rob Haynes mentioned that initially there were concerns from the industry that the apple tissue culture plants would be juvenile (which they were during the first two years).  However, the apple plants appear to start production much faster in the first five years, than apple trees propagated normally.  By the 10th year the production is expected to even out, but the quality of tissue culture propagated trees seem to be superior to the standard propagated trees.  Presently, Canadian grape growers are not familiar with tissue culture produced plants but at some points when these plants become available, the nursery expects these plants will be superior to standard propagated grapevine plants. 

  The Nursery has an active research and development program.  One current program is applied to understand the microbial population (microbiome) around the roots and within the plants.  It is known that tissue cultured plants are grown aseptically, consequently many of the microbes that were present in the original plants have been removed.   Some of the microbes (bacteria, fungi, and/or viruses) may be harmful to the plant growth.  However, some can be beneficial and help the plants absorb nutrients or may have other important functions. Learning about the plant’s microbiome will allow the isolation of the beneficial microbes while eliminating the harmful ones.  The ultimate goal, is to replenish (at a later stage of production) the beneficial microbes that were removed during the tissue culture process to develop of stronger and healthier plants.    Judit Monis, Ph.D. provides specialized services to help growers, vineyard managers, and nursery personnel avoid the propagation and transmission of disease caused by bacteria, fungi, and viruses in their vineyard blocks.   Judit (based in California) is fluent in Spanish and is available to consult in all wine grape growing regions of the word.  Please visit juditmonis.com for information or contact juditmonis@yahoo.juditmonis@yahoo.comcom to request a consulting session at your vineyard.

Are Japanese Beetles Worth the Trouble?

leaf infested with Japanese beetles
Photo credit: Dominique Ebbenga, University of Minnesota

By: Annie Klodd, University of Minnesota Extension Educator

Food for thought: In viticulture, we reduce our vine canopies through hours of shoot thinning, leaf removal, and hedging. So why do many of us act so swiftly to stop Japanese beetles from eating our leaves? While Japanese beetle control is important, you can increase your bottom line by waiting to spray until it really needed.  

Japanese beetles are invasive insects that feed on leaves of over 300 plant species including grapevines. They aggregate (congregate) on leaves in mid-summer by emitting pheromones that attract other beetles to the area. They “skeletonize” leaves by eating around the leaf veins.

The trick is to decide how many Japanese beetles to tolerate in the vineyard before starting to spray.

Many agricultural insect pests have an “economic threshold” – a certain number of insects that must be present in the vineyard before an insecticide application will be economically beneficial. Economic thresholds help growers make sure that the benefit of an application outweighs the cost.

But Japanese beetles are different. There is no widely accepted economic threshold for Japanese beetles yet. More research is currently underway in this arena.

Without an economic threshold, growers’ tolerance levels seem to vary widely. Many growers spray at the first sign of beetles or leaf defoliation, while others wait until beetles have congregated on the vines and skeletonizing some of the leaves.

To decide when to spray, consider the following:

Vines can tolerate some beetle feeding

Research new and old suggests that healthy grapevines can tolerate some leaf feeding before fruit or plant health are impacted.

New research from University of Minnesota measured the impact of Japanese beetle feeding on yield and fruit quality of Frontenac. The researchers found that heavy leaf defoliation (About 20-50% of leaf surface eaten) decreased fruit quality by decreasing brix and increasing titratable acidity. However, it did not impact yield, and lighter defoliation had little impact on fruit quality. From that research, they recommended an economic threshold of 25-30% defoliation or 25 beetles per meter.

A 2003 study at Michigan State University enclosed 40 Japanese beetles per grapevine and let them feed. After two weeks, they caused about 6.8% defoliation, but this did not affect vine growth that year or the next. They determined that 30% defoliation at bloom was needed to decrease vine growth.

These studies suggest that Japanese beetles do not reduce vine health or fruit quality until 25-30% of the leaf surface is eaten. 30% defoliation of every leaf is higher than we typically see in Minnesota. In 2018, UMN researchers surveyed several grape varieties and found the highest defoliation levels between 12-15%, which is below their 30% suggested threshold for spraying.

Grapevine leaves with 2%, 6%, and 10% defoliation

Photo: Grapevine leaves with 2%, 6%, and 10% defoliation, measured using a standard laboratory leaf area meter. Dominique Ebbenga, University of Minnesota

Vine age and health:

As Japanese beetles aggregate on plants, they can defoliate a small, newly planted vine faster than a mature vine. Similarly, they are likely to do more damage to a stressed or stunted vine than one with a full, rapidly growing canopy.

Therefore, growers should prioritize protecting newly planted vines from Japanese beetles before populations do significant damage to the leaves.

When aesthetics matter:

Even if the beetles fail to impact grapevine health, many people find them to be disturbing and unsightly. This is enough to encourage some vineyard managers, especially those at public venues like wineries, to control Japanese beetles as soon as they see them even if the damage is minimal.

Japanese Beetle Management

Once a grower decides to spray insecticide for Japanese beetles, the next question is what to spray. Several insecticides are labeled for Japanese beetles. The Midwest Fruit Pest Management Guide is one of the resources that lists and compares these options.

Many insecticides provide knockdown control, killing beetles at or shortly after contact. Several neonicotinoids have residual activity, killing beetles in the 2-3 weeks following the application.

Spraying for Japanese beetles can be time-consuming and expensive. To minimize applications, consider incorporating a product with residual control rather than relying solely on knockdown products. Consider cost as well – based on the research discussed above, this application may not make a strong difference for yield or vine health.

Examples of effective active ingredients include phosmet, carbaryl, acetamiprid, fenpropathrin, cyfluthrin, and cypermethrin. Organic options include neem oil, kaolin clay, and Bt galleriae (e.g. BeetleGone!). Please consult the Midwest Fruit Pest Management Guide, a similar publication, and the product labels for more information.

Non-insecticide control measures

Very small vineyards may be able to manually remove Japanese beetles. Manual removal, commonly used by home gardeners, involves brushing the beetles off the vines into soapy water or vacuuming them off with a handheld car vacuum. This is generally not practical for commercial vineyards.

Another potential non-chemical option is to surround the vines in insect exclusion netting, which is similar to bird netting with smaller holes to keep out insects. I am not personally aware of research testing this method in vineyards, but a current study of exclusion netting on apple trees at University of Minnesota shows promise for a variety of insect pests.

In summary – Controlling Japanese beetles will be beneficial if infestations are high, but the good news is that growers need not panic upon spotting the first beetles. Take time to assess the situation and determine an economical plan of action before filling the spray tank.

To see recent research on how Japanese beetles affect grape yield and quality, see: Impact of Adult Popullia japonica Foliar Feeding Injury on Fruit Yield and Quality of a Temperate, Cold-Hardy Wine Grape, ‘Frontenac.’ https://doi.org/10.3389/finsc.2022.887659

Vineyard Irrigation: Wet Your Plants with Efficiency & Precision

By: Gerald Dlubala

The importance of water and its management for grapevine quality and yield cannot be overstated,” said Randy Heinzen, president of Vineyard Professional Services in Paso Robles, California.

  “When it comes to irrigation,” said Heinzen, “vineyards depend on drip irrigation for the most part. Sprinklers are great at spreading water across the entire acreage, but applications by sprinklers in-season can increase the potential for disease in the canopy. I haven’t worked on a furrow irrigation system (which diverts naturally accumulating water into channels that run into or along each side of the vineyard rows) here on the Central Coast since 2011. Choices will always differ by region, and some vineyards successfully utilize dual systems that combine drip and overhead systems or drip and under vine micro-sprinklers. Grapevines are fairly drought tolerant, so they readily adapt to receiving drip irrigation at several points near the trunk.”

  Heinzen said that most vineyard managers prefer drip irrigation systems because of the ability to provide a directed and constant volume to each plant. Another advantage of utilizing a drip system is the ability to fertigate and apply chemicals directly and precisely to each vine when needed.

  “The type and amount of scheduling for those needs varies based on system ability, soil dynamics, the winegrower’s goals, and seasonal weather events and conditions,” said Heinzen. “At the most basic level, irrigation is applied at some fraction of the grapevine’s water use. Other variables include the time in the growing season and the grapevine’s age, root system, soil interaction level and general overall health. And the more active the leaf area is that is photosynthesizing, the greater the water use is going to be by the plant, which in turn requires a greater need for water replenishment.”

  Heinzen told The Grapevine Magazine that the cost of installing a drip system depends on the volume of water available for irrigation and the vineyard spacing, layout and design. The cost of mate

rial and installation of a drip system’s sub mains through to the above-ground infrastructure can be between $3,000 and $6,000 per acre, comparable to installing a quality sprinkler system.

  “Most vineyards track irrigation through flow meters and in-field pressure systems in drip hoses,” said Heinzen. “But, while digital tracking removes most human errors caused by erroneous note-taking and transcription of numbers, technology is not always reliable, and data gaps can occur. A novel approach to monitoring irrigation uses satellite imagery to estimate actual evapotranspiration and deduce the correlating irrigation needs. In terms of field operations, there are several automated systems available for remote pump and valve control, but the same caveat about reliability applies to agricultural field technology as well.”

  “With that in mind, a vineyard owner’s most important question for the irrigation system installer concerns the warranty. For most vineyard owners, the irrigation systems are installed by third-party contractors, with the majority of their work buried underground. The most professional and experienced contractors give the best warranties because they are good at their craft. In my experience, paying more for that professional design and installation upfront eventually saves money in the long run due to the potential of more costly and untimely field repairs and maintenance after installation. Further, vineyard owners should educate themselves on how the system runs, how to use it, and how to handle and make minor repairs themselves. Disruptions in the availability of needed water impact current and future crops, so as the vineyard manager, you should know the location of the underground pipes, how the controllers and filters operate and what pressures your system is designed to maintain for optimal performance. A good relationship with your contractor is critical to your farming success.”

Water Efficiency Is Key: Noble Vineyard Management Services

  “Water efficiency is key when choosing irrigation systems,” said Tyler Rodrigue, CEO of Noble Vineyard Services, a full-service, vineyard-to-winery service operating on California’s North Coast. “The grape-growing industry has been forward-thinking for decades regarding efficient water applications and measuring cost benefits and needs to ensure that our water resources are put to their highest, most beneficial use. We use drip irrigation systems in spring, summer and fall to irrigate the vines. Then, if we’re not getting normal rains, sprinklers are used during late fall, winter and early spring to simulate normal rain conditions and provide a good soil profile.”

  Like Heinzen, Rodrigue said that drip irrigation is the preferred choice because of its efficiency. “It’s important to ensure that vineyards are adequately irrigated through the seasons, including pre-budbreak, during the growing season and then through the harvest into post-harvest. Rainfall received during our rainy season naturally influences our irrigation schedules. As a rule of thumb, we like to have an approximately one-acre foot of water available for irrigation during the growing season. We use remotely controlled, automated irrigation systems that provide leak detection and track the amount of water allocated during the irrigation session, the vine water capacity and critical soil moisture levels.”

  Rodrigue recommends that vineyard owners perform quality research before choosing a system. Always check with other growers who use similar irrigation systems to validate capabilities, user-friendliness and return-on-investment (ROI). Finally, choose a distributor that offers serviceability and critical support when you need it. Drip, sprinkler and micro-sprinkler systems can all seem expensive because of the infrastructure necessary for proper performance, including PVC pipe, fittings, sprinkler heads, drip tubes, motors and pumps. Still, when appropriately scaled, the ROI ranges in the three-to-five-year range.

Precision Irrigation in Stages: William Chris Wine Company

  Tate Gregory is the Vineyard Manager for William Chris Wine Company, located in Hye, Texas. He told The Grapevine Magazine that it’s close to, if not impossible, to establish a vineyard in Texas without some form of irrigation system in place. Like the others, he prefers drip irrigation systems, the choice method in Texas, for all the wineries he oversees.

  “Drip irrigation allows for more precision in your watering and chemical injection needs,” said Gregory. “A drip system is probably one of the more expensive options when starting, but the ability to granularly control your water and nutrient applications is well worth the upfront cost. The emitters on the drip system ensure that the proper amount of water needed is dispensed and directed towards the root zone of the vines underneath the row. Additionally, those emitters allow the desired amount of water you want at each emitter, reducing water waste by not irrigating unnecessary areas. Sprinkler systems will direct a lot of water to your vineyard all at once, but sprinklers can’t precisely deliver water to a target. On top of that, you can end up with mildew or other fungal issues that arise from having a moist canopy during your growing season. I have seen sprinklers used in vineyards as a form of frost protection, but here in Texas, we use fans.”

  “The watering comes in stages for our vineyards, unless you’re in a drought like we are currently experiencing, when we irrigate more frequently just to maintain vine health,” said Gregory. “Here in Texas, we usually get in-season rains that supplement our irrigation plan, which depends on many factors, including temperatures, site water holding capacity, rootstock, grape variety and more. We want to ensure proper shoot and cluster development and a canopy that is sufficient to ripen our fruit later in the season, so as a regular part of our routine, we develop and alter irrigation schedules weekly.”

  “At the post-fruit set, water is applied on a more prudent basis to control excessive canopy growth and focus on cluster size and berry development versus lateral shoot growth. It really is a fine line between discouraging excessive growth versus maintaining the health of the canopy to ripen fruit. In-season watering can vary from six to 12 gallons a week per plant early on, versus two to four gallons closer to harvest. Post-harvest, we’re looking to keep the canopy viable for as long as possible to ensure proper carbohydrate storage for next growing season.”

  Gregory said that all irrigation systems require infrastructure both in the field and at the control center. Field infrastructure includes the PVC needed to move the water into the fields, the risers to get the water into the drip tape and the pressure gauges to ensure consistency. The control center infrastructure is usually centrally located and includes things like electric solenoid or manual valves, backflow prevention, chemical injectors and water filters. Controlling your irrigation system depends on the vineyard’s situation. It can be as simple as a valve to manually turn the blocks on and off to a remote-control box that allows for scheduling different timing and length of irrigation sets. There are many options, but it all comes down to available resources and time. A smaller vineyard with an on-site manager can get by manually. Still, larger-scale vineyard operations over multiple sites would benefit from and be more efficient with a control box to schedule system operations. Prices vary based on how intricate your system is.

  “There are things to think about when choosing and installing an irrigation system,” said Gregory. “Try to forecast ahead to ensure your water supply will meet your irrigation needs, especially in a drier year. If not, you may need multiple wells or water storage tanks to meet demand. Additionally, you want to determine if you or someone else will be available to be out in the field when necessary to open and close the valves to change blocks. If not, can you acquire the resources needed to put towards a control box that can do these tasks on a preset schedule? Lastly, segmenting your vineyard blocks based on soil types and water needs can help ensure your plants get the water they need to thrive. For example, we farm a specific vineyard and section off the top of a hillside into its own block so we can provide for the needs of that block, compensating for soil type and exposure.”

Baseline Water Requirements

Water requirements, as expected, are influenced by several factors, including vine age and density, cover crops used (if any), rootstock and actual climate conditions (rate of rainfall with evaporation rates) under which they are grown. Additionally, the grape variety can play a role in baseline water needs. For example, red grape varietals typically require less water than white varietals, and grapes traditionally grown for aromatic and lighter styles of wine demand more water to minimize water stress or loss than those produced for medium to full-bodied wines.

Vineyard Equipment Choice Designs Boost Production, Save Money

By: Cheryl Gray

From preparation to harvest, equipment makes the difference in how well a vineyard is maintained year-round. Tractors, tools and expertise in how to use both go a long way towards reaching that goal. To help clear the path are companies with the products that get the job done.

One of them is Tillage Management, Inc, which designs and manufactures one-pass and reduced-pass tillage equipment. A family-owned company out of Tulare, California, Tillage Management first began manufacturing one-pass tillage equipment for row crops back in 2006. In 2017, the company expanded its product line to include equipment that can handle the needs of vineyards. To be certain that innovation meets practical application, Tillage Management works side-by-side with its farming division to test its equipment and new product designs. Kat Coombes, project manager for Tillage Management, describes why minimizing passes optimizes cost savings.

“Our aim has been to sell high-quality products that are easy to use, simple and inexpensive to maintain, and ready to run when the farmer needs them. We can customize our units for different crops and soil types so our customers have the optimal setup or setups for their needs. By reducing passes, our customers typically save 50 percent or more on time and tillage costs. Our equipment also helps to reduce dust, incorporate organic material, and potentially improve soil health for crop roots.”

Coombes described some of the company’s most widely used products.

“For our newer models, we have applied large-scale, one-pass tillage principles to orchard- and vineyard-sized equipment to reduce passes and fix some of the typical tillage issues that exist in the market.”

Among the best features for Tillage Management products, Coombes says, is that there is little-to-no wear on original parts or replacement parts. The company prides itself on building for the lifetime of the product.

“We build heavy-duty frames with long-lasting working parts to allow our customers to keep running and stay out of the repair shop. All disk blades are independently-mounted to custom maintenance-free bearings with 10,000 to 25,000-plus acre lifetimes. Units leave a clean finish, maintain levels and do not throw dirt outside the working width.”

Tillage Management equipment, says Coombes, is customizable to fit almost any need. Some of those custom features include either towed or three-point hitch options, three-row or five-row disk and implement combinations, multiple implement types to combine with disks and every working width from four to 15 feet.

Coombes told The Grapevine Magazine about Tillage Management products that vineyard owners should consider.

“The OPTIMIZER Model 1007 is a three- or five-row towed disking implement. For a vineyard with 12-foot spacing and cover crops to work into the soil, this eight-foot-wide unit with a seven-foot working width would be set up with two rows of disk blades for complete uprooting coverage, two rows of chrome-edged baskets for soil mixing and residue incorporation and a final smooth roller for a clean, flat finish. This would typically replace two to three passes with a traditional disk and work two to three times as quickly as a rototiller.

The OPTIMIZER Model 304 is a three-row, three-point hitch disking implement. For a vineyard with eight-foot spacing and some residue, prunings or cover crop to work in, this is a five-foot-wide unit with a four-foot working width. All weeds and cover crops would be uprooted and soil inverted by the two rows of disk blades; then, the rear cultipacker would break up clods and leave a level, crumbly finish. The seven-foot-long 300 Series is great for tight spaces and precision control but with the tillage potential of a much larger implement.

The OPTIMIZER CR Series Model CR-7 is a three-row, three-point hitch chisel implement. For a vineyard with compaction issues, water penetration problems or soil stratification that extends past the top four inches, the Chisel Roller is an excellent solution. Chisel shanks with wings allow full soil-shattering coverage across the working width, while the subsequent roller breaks down large clods and leaves a level, crumbly finish. It works great on its own or in combination with an OPTIMIZER disk.”
Coombes adds that Tillage Management has also designed products with smaller vineyards in mind.

“The OPTIMIZER 300 and 1000 Series require a minimum of 11 to12 horsepower per foot working width, so tractor requirements start at 48 HP. Our goal has been to make our one-pass tools more widely available for smaller tractors and smaller farms.”

Another California-based company, Solectrac, offers vineyards electric tractors. This year, World Ag Expo recognized the company for innovation in its field, earning an award for “Top 10 New Product.” Being quiet with zero emissions and no dependency on fossil fuel are among the features that make Solectrac’s products not only popular in the United States but as far away as Canada, Norway and India. Global demand, the company says, continues to grow because of concerns over protecting the environment, coupled with increasing prices for fossil fuels.

Vineyards switching from diesel to one of Solectrac’s electric tractors can charge their machinery with solar energy. Prices for these electric tractors range anywhere from $35,000 for a 24- to 30-horsepower model to $75,000 for the 70-horsepower version. While the initial cost is as much as 40 percent higher than traditional tractors, Solectrac points out that by not having to use fuel and oil, coupled with lower maintenance costs, the electric tractors pay for themselves within two to three years.

On the East Coast, BDI Machinery Sales, Inc. specializes in the tool and machinery needs of fruit, vegetable and nursery growers. Founded in 1996 and based just outside of Philadelphia, the company sources and distributes agricultural equipment from around the world.

Paul Licata has more than 25 years of experience in senior sales, marketing and operations management.

“BDI Machinery Sales is your complete source for innovative specialty agricultural machinery. We offer numerous types and sizes of sprayers, hedgers, leaf removers, shredders, cultivators, pruners, mowers, row mulchers and other specialized machinery from around the world.”

Licata explains why BDI Machinery is the first choice for many vineyards when it comes to finding just the right equipment, giving details on some of its most popular options.

“The CIMA low-volume atomizer sprayers are the industry standard and technology leader, with single, multi-row, row cannon and pneumatic air boom spray heads. The OLMI Air (Pneumatic) Impulse deleafers are the industry standard and technology leader, with single and multi-row configurations. The Rinieri CRV Vision Hedger/Trimmer is the industry standard and technology leader, with single, multi-row and over-the-row configurations.”
When it comes to product innovation and technology, Licata promises that BDI can deliver.

“CIMA EPA 2.0 System (Delivery Proportional to Advance) works with the full range of new CIMA’s low-volume pneumatic sprayers. For spraying quantity accuracy, by decreasing the forward speed, the system automatically reduces the quantity delivered while increasing the forward speed and the quantity delivered. This system avoids product waste and assures treatment effectiveness, a great cost-saving and a reduction in the environmental impact. Easy programming is guaranteed, as it is possible to save and manage up to 15 programs by entering the following operation parameters.

OLMI Air impulse deleafers are implemented multiple times during the growing season and are the pinnacle of leaf-removal technology. The machine is air-powered through a compressor to multi-diffusers that are rotating. The pneumatic machine shatters leaves to remove them from the canopy, as opposed to previous technologies that pull the leaves. Trials have shown traditional leaf pullers remove about 50 percent to 60 percent with control, while the air impulse deleafer removes targeted leaves with 100 percent control.

The Rinieri Finger weeder cultivator allows farmers to no longer reduce spraying and use this machine for organic weed control. The new range of Rinieri finger weeders is for fast mechanical weeding (up to 6 MPH) composed of the Bio-disc, which breaks the ground near the plants and then the Bio-Star with its rubber spokes for inter-row processing.”

Brazil is home to Jacto, an agricultural machinery company touting workable solutions for vineyards looking for equipment alternatives. Jacto has clients in more than 100 countries, with production plants in Brazil, Argentina and Thailand. Paulo Bueno works as a product manager in the engineering, marketing and commercial areas.

“Jacto has a wide range of high-tech products, from equipment for pruning and portable sprayers to large machines for spraying, fertilizer spreading, planting, coffee and sugarcane harvesting. Jacto also provides solutions and services for precision agriculture and agriculture 4.0 for increasingly more sustainable productions.

The main innovations in the field of fruit sprayers are present in the Arbus 4000 JAV (Jacto Autonomous Vehicle) used in citrus cultivation. In this equipment, LIDAR sensors, radar and optical units capture information from the environment and support decision-making. The spray tower is composed of eight independent electric fans, four on each side and arranged in a row, in each of which it is possible to change the wind speed and spray flow, allowing the application to be interrupted in each of the eight sections as needed. Adjusting the position of the fans is also possible, bringing it closer or further away from the crop, modifying the angle of each deflector in the vertical direction, in order to make the application converge to the plant.”

The experts agree that cost, low maintenance and longevity are key to making a good investment when it comes to vineyard equipment and tools. The choices are vast, and discernment goes a long way to making the right one.