Month: January 2021

By: Becky Garrison

According to Steven Thompson, winemaker for Analemma Wines (Moiser, OR), they chose to plant new varietals in their certified biodynamic winery because they are a good match in terms of micro-climates, as well as a strategic marketplace differentiation. “This spectrum of varietals ripen at different times to allow us to take advantage of shifting seasonal variations,” Thompson opined. This move also enabled them to have a range of products on the market to meet shifting consumer demands.

 As evidenced at a joint Viticulture and Enology Session held as part of the Oregon Wine Symposium (February 11-12, 2020), Thompson joins a growing cadre of wine growers and winemakers, who are exploring producing alternative varieties that can appeal to wine consumers.

Wine Varietals and Climate Change

  Dr. Gregory V. Jones, Evenstad Director of Wine Education, who holds the Evenstad Chair in Wine Studies, and a professor and research climatologist at Linfield University, opened the conversation with a discussion about the dramatic effects of global climate change on the wine industry in terms of landscapes, marketplace, and wine growing. Citing data coming out of Berkeley Earth laboratory, which Dr. Jones noted is similar to data from other climate laboratories, since 1980, the trend in global temperatures has risen nearly three to four degrees Fahrenheit. All signs signs indicate the temperature will continue rise along with accelerated trends towards warmer summers and winters, as well as less rain with the exception of spring in many regions.

  When examining the global response from the wine industry, Dr. Jones stated that growers from different wine regions are discussing how to adapt to this future warming climate. “You can see investment in reducing energy and water needs, along with changes in viticultural practices and varieties of grapes grown.”

  Due to climate change, the limits of viticulture have change dramatically in the past 20 to 40 years. For example, the 58 degree latitude mark that designated the furthest north one could establish a viable vineyard has grown up north to 61 degrees latitude. Also, this overall warming has created changes in ripening characteristics with grapes now coming to fruition in less time.

  In his assessment, the way to increase adaptability is to decrease vulnerability. “We need to realize the large potential that we have for adaptation, Dr. Jones reflects. Here he points to some recent research from Cornell involving DNA sequencing kind of framework where they can breed varieties plants in the order of months and weeks instead of years. He adds there’s also a need to develop increasing regenerative agriculture processes that maintain healthy soils and optimize energy and water systems.

   As expected, climate change has produced a global shift in the types of grapes being grown. For example, Jones pointed out that Bordeaux added new varieties to its list, and France just adopted a whole collection of new hybrids that are specifically designed for warmer climates. He added that many regions are going to be interested in places where indigenous varieties have been grown in warmer climates like Greece and Cyprus. Also, Israel is doing research on the cultivar performance of grapes by replicating the types of climates that we might see in the future.

Selecting Alternative Varietals

  Brian Gruber, winegrower and winemaker in Southern Oregon’s Rogue Valley with Swallow Hill Vineyard, Barrel 42 Custom Winecraft, and Quady North Winery, spoke at this symposium  about how his specialty is variety. Presently, 28 varietals make up more than 80 percent of their harvest. “We have so many microclimates, terroir, soil types, elevations, and other aspects. There’s no one thing that grows best in southern Oregon. It’s very much matching a site to the best varieties,” Gruber stated.

  When Gruber began exploring growing different varietals, he looked too see what other winemakers in the region were growing. “I had a neighboring winemaker who was growing nine varietals. And that gave me a chance to see what was growing in my neighborhood.”

  Next he assessed those varietals he planted via trial and error with test plots. In addressing one’s particular site Gruber suggested taking the following factors into account: climate (growing days, length of frost free season), elevation, soil test results, wind direction, sun exposure, and water availability. Also Gruber pointed to the necessity of assessing how much to plant of a new varietal. Plant too little and that could hamper the growth of a successful program. Conversely, plant too much and there’s the risk of having more grapes than one can sell.

  In addition, Gruber encouraged wine marketers to examine what varietals appeal to them by asking these questions:  What gets you interested?  What keeps your work fresh and fun? What are other wine markets doing, and how much does it matter being “first” or “new” matter to you?

  Based on the overall assessment of those varietals that match a particular site’s profile, a winemaker’s interests, and the current market, create a final list of varietals that fall in the sweet spot. Gruber remarked, “I’m looking for that combination of what I like, what grows where I live, and what the market wants.”

Farming Metrics & Logistics

  Like Gruber, Scott Zapotocky, Vice President of Winegrowing for Geodesy Wine’s Eola Springs and Chehalem Mountain Vineyards in Oregon’s Willamette Valley and Sage Ridge Vineyard in Napa Valley, grows a range of alternative varieties with 17 different varieties of grapes planted across these three distinct vineyards.  He offered a series of practical pointers in preparing blocks for conversion to new varieties from existing plant material. In conducting a block assessment, he assesses the vigor potential through soil testing and virus risk through plant testing to detect diseases and viruses like Leaf Roll, Fan Leaf, Red blotch, and trunk disease, as well as determining if a trellis retrofit or redesign is needed. He then ascertains if he can mitigate any issues that arise or if a complete replant would be faster and more economical.

  In detailing the conversion timeline, Zapotocky pointed to winter as the period to conduct a thorough assessment of vineyard blocks and securing source materials before bud swell. Bud wood sourcing can be from local sources like other farmers (do your due diligence) or in partnership with a nursery that may sell certified material. Be mindful that as viruses can come in one form or another, conduct virus testing to assess the potential risk your business/farm plan can tolerate if a virus is found.

  Planning considerations that Zapotocky noted: April through June is grafting season. Here, he cited the importance of vetting the grafter within the local winegrowing community. Weed management: one farming task that is often overlooked throughout the conversion process is weed management. Be certain to take care of any weeds before the grafter begins their work. Budwood stock: a metric of two to three times the amount of buds for the number of plants described. Success rate: it is common for 10 percent or more of the buds to not take, and be prepared to either re-graft in-house, call the budder to come back, or replant as needed.

  Do not expect any production during the grafting year though. Zapotocky estimates a block should yield 50 to 70 percent in the first year post grafting and then 90 to 100 percent by the second year. During the field prep for the grafting, be sure to track the prevalence of trunk disease in order to understand the future lifespan of the block. Also, an examination of the growth from individual clones of different varieties can determine which specific clone (or varietals) proved to be the most successful for future planting or grafting projects.

Marketing Alternate Varietals

  For those winemakers looking to expand into alternate varietals, Dr. Damien Wilson, Sonoma State University’s inaugural Hamel Family Chair in Wine Business Education, stressed the need to focus on the consumer. As research has demonstrated, global consumption of wine dropped from the 1980s with fewer millennials being attracted to wine.

  While wine marketing may highlight specific AVAs, according to Dr. Wilson, less than ten percent of American wine consumers could name the specific AVA that produces their favorite wine. “Consumers start by thinking of wine as a beverage, then an alcoholic beverage, then style, then varieties of grape, and then region,” he stated. The other two criteria that most effectively lead to wine sales are awareness in the consumer’s mind and the availability of a particular wine at the point of sale.

  Furthermore, Dr. Wilson noted how during periods of economic upheaval, consumers tend to switch back to blue chip wines. “This switch impacts those wines that don’t have the recognition of say an Oregon Pinot Noir,” he said. Hence, when marketing say Oregon Pinot, lead with what consumers know which is the premium attached to Willamette Valley Pinot Noir.

  Keep alternative varieties in mind when crafting marketing campaigns but make them less of a focus initially. Continue to conduct research on the those varieties grown and their popularity with a customer base. Use these benchmarks to evaluate marketing strategies, which should be monitored and adapted over time as applicable.

By: Alyssa L. Ochs

Vineyards use several types of equipment to turn grapes into wine, and this includes everything from tiny devices to huge pieces of machinery. Large machinery is used for canopy management, spraying, maintenance, harvesting and other purposes, which means that vineyards need year-round support from equipment companies to keep operations flowing smoothly.

  Here’s a look at the large pieces of equipment essential to a modern vineyard’s operations and the innovations and technologies that may help vineyards improve their practices.

Types of Large Vineyard Equipment

  Row tractors are the vineyard’s true workhorses and are among its most essential and versatile pieces of large equipment. There are many different attachments that vineyard workers can put onto a tractor. With the appropriate attachments, tractors can be used for leaf pulling, pruning, hedge clearing, suckling removal and various other purposes.

  Other pieces of equipment commonly used in vineyards are spray systems, mechanical grape harvesters and fertilizer spreaders. Rotary mowers, rotary shredders, rotary trimmers and excavators are also used for the various operations required to grow wine grapes successfully.

  To help vineyards work more efficiently and safely, heavy machinery producers have developed multi-functional lines of equipment suitable for vineyard use. When an expensive piece of machinery can do more than one thing, a vineyard saves money on investments, maintenance and storage costs. For example, there is equipment that can handle both berm sweeping and mowing, and hedging and disking can also be performed by a single machine, thanks to modern innovations. These enhancements aim at saving time through more efficient processes that overcome past mechanical challenges.

Examples of Vineyard Equipment Innovations

  Bob Giersbach from Gearmore Inc., a company that provides quality implements through servicing tractor dealers, told The Grapevine Magazine that one of Gearmore’s most popular products is the Venturi Two Row Air Sprayer, which features a fine micron droplet spray.

  “By spraying two complete rows, spraying time is cut in half, thereby reducing labor, fuel and wear and tear on your tractor and sprayer,” Giersbach said. “Also, the atomization of spray droplets is smaller and more uniform to ensure better coverage and less chemical waste and soil and water contamination.”

  Based in Chino, California, Gearmore offers a wide range of vineyard implements, including vine trimmers, leaf removers, pre-pruners and compost spreaders. The company also provides sulfur dusters, rotary tillers, in-row cultivators, soil conditioners and other large machinery.

  Greg Christensen is the go-to-market manager for 5 Series tractors, Frontier Implements and high-value crops at John Deere. He told The Grapevine Magazine that John Deere 5G Series specialty tractors were designed and built specifically for vineyard applications. They are the most popular piece of large equipment that John Deere offers customers in this segment.

  “Offered in narrow and low-profile configurations and ranging from 75 to 100hp, the 5G Series is small and nimble enough to operate effectively in the narrow confines of a grape vineyard and versatile and powerful enough to handle the many operations required of it,” Christensen said. “Recent updates to the 5G, derived from direct feedback from vineyard operators, include new ergonomics throughout the operator station for ease of use; a new front hitch option that expands the applications the tractor can be used for; and a super narrow cab option on the 5GN models for ultra-narrow environments.”

  Rick Cordero, the grape harvester product specialist at New Holland Agriculture, told The Grapevine Magazine about New Holland’s BRAUD grape harvesters. This line has grown in popularity in the North American market because of its demonstrated harvest quality, capacity and four-season versatility. BRAUD harvesters are already a global market leader in other winegrowing regions across the world.

  “New Holland offers nine BRAUD grape harvester models in the North American market. What is at the heart of each of these models is the Noria Collection System and the SDC Shaking System, coupled with best-in-class optional cleaning systems, such as the Opti-Grape and Destemming,” Cordero said. “Our product lineup is capable of harvesting rows from as narrow as 0.9 meters with the Model 9080NH while offering models capable of high-capacity harvesting up to 14.5 tons per hour with our Model 9090XE.”

  Not only does this product offer four-season versatility, but it can also interchange the picking head with seasonal work tools available through New Holland’s vineyard partners, Berthoud Sprayers and Provitis Vineyard Pruning Tools. These tools integrate into its chassis and control systems.

  “New Holland is your single-source provider of vineyard mechanization for your vineyard operation, as our grape harvesters are complemented by our complete lineup of vineyard and utility tractors,” Cordero said.

  Kubota product manager, Matt Walker, said that the Kubota M5N range of tractors is specifically designed to work in vineyards where a powerful yet compact package is required. The M5N range has a proven track record for efficiency, reliability and operator comfort, making it a popular choice for both operators and owners. 

  Walker said that recently more attention has gone to the effects of soil compaction on vineyard rootstock development and fruit production.

  “Due to the nature of working in vineyards, heavy machinery is repeatedly passing over the same ground and extremely close to the vines time and time again,” he said. “This inevitably leads to soil compaction, resulting in poor drainage and restricted root growth.”

  Kubota helps with this issue by providing the M5N-091 Power Krawler, a machine unique in the narrow tractor market due to its Kubota-designed-and-built track system instead of a traditional wheel.

  “By replacing the rear wheels with tracks, Kubota offers its customers a great, low ground pressure alternative to fitting a wider tire, which can compromise overall vehicle width,” Walker said. “The tracks fitted to the M5N-091 Power Krawler keep the narrow profile of the tractor down to just 54 inches while increasing the soil and tire contact area, allowing greater weight distribution, so it’s great for treading lightly around those valuable roots. In addition, the tracks provide additional traction and stability when working in hilly terrain, giving operators the confidence they need to get the job done.”

Promising Technologies for Vineyard Equipment

  While many things have remained constant in the operations of vineyards over the years, new technologies make it easier for vineyard workers to do their jobs well. Updated software is helping vineyards streamline processes and keep better tabs on how grapes are grown and harvested. Meanwhile, computer-guided machinery and moisture sensors offer greater accuracy than manual methods and save vineyards time and money over the long-term. Yet, the most effective solutions for a vineyard’s evolving equipment needs are often the simplest ones.

  Giersbach from Gearmore said, “In general, most new vineyard implements are basic improvements of existing products, such as new vine trimmers that will perform in difficult trellis systems, like California Sprawl. Also, with current large reductions of in-row spraying, more companies are developing new and improved in-row cultivators.”

  Christensen said that John Deere’s JDLink technology is becoming more commonplace in vineyards to enhance connectivity and remote diagnostic capability. JDLink provides remote access for monitoring critical tractor systems and functions. Christensen said this continuous communication, alongside custom alerts, can prevent downtime by helping customers avoid equipment failures.

  “Producers can give their dealer remote access to the machine to troubleshoot potential problems, provide fast repairs or schedule routine maintenance and help keep their machines up and running,” he said. “For operations with a fleet of tractors, JDLink can be used to check machine location, view location history, see reports on historical performance and utilize and compare machine performance across the fleet.” 

  Meanwhile, New Holland Agriculture has enhanced its harvesters’ performance with feedback from its customers and through new offerings and mechanization partners. The company has done this by growing and implementing its Precision Farming and Telematics capability to elevate the vineyard operator’s efficiency.

  “GPS integration allows Row Tracing System technology and the operator to see harvested, or unharvested, rows on the onboard Intelliview IV display or to see what rows have been sprayed or pruned for full integration,” Cordero said. “This is complemented by our grape weighing system on our Twin-Hopper models, providing static harvest data.”

  Cordero said GPS integration allows New Holland to offer a precision farming solution called SmartSteer. This automatic guidance system utilizes a 3D camera to self-steer the harvester by following the vine canopy.

  “It also self-aligns the picking head pendulum angle to correct the unit steering direction,” Cordero said. “This helps in reducing operator stress and increasing harvesting safety and efficiency.”

  Walker of Kubota has seen GPS/GIS technology becoming more widely available, leading to an increase of adoption in the industry as prices come down.

  “By giving the manager and team more information about soil moisture and plant health, vine health can be maximized, while allowing costly treatments to be made at the optimal time to maximize effectiveness and reduce cost,” Walker said. “There have been several interesting developments in automation technology in the past years, and it will be exciting to see where it takes the industry in the future.”

Choosing Large Equipment for Your Vineyard

  With recent innovations and technologies introduced into vineyards, now is an exciting time for professionals who work with large vineyard equipment. Simple equipment can help a vineyard minimize downtime, but it’s still important to regularly clean and maintain it to keep things running at all times. When possible, vineyards should purchase large and costly machinery from companies that it can truly rely on for quality products, warranties and access to parts for future repairs.

  John Deere’s Christensen said that just as each brand of fine wine is different and has distinct qualities, each vineyard’s needs and requirements are also unique.

  “This is where a local John Deere dealer can play a key role as a trusted advisor to help select what products will work best for the job at hand while providing ongoing support throughout the life of the machine.”

  Walker of Kubota advises vineyards seeking new equipment to “make sure you speak to your local Kubota dealer, explore all available options and look at the overall package. While negotiating a new machinery purchase, the focus is heavily on the price and features, but the dealer backup and service capability are equally important. After all, missing a few hours of harvest can be extremely costly. That’s why all Kubota dealers are staffed by competent, highly trained technicians who are linked to our state-of-the-art online service center with all the technical information they need to keep you running.”

  New Holland’s Cordero said vineyards interested in buying new large equipment should plan and plan again, not just for the financial aspect of the purchase but also for the vineyard’s infrastructure, service support and machine transport. He said the things to plan for include sizing the proper harvester model to fit the rows, where the grapes are collected and where or how grapes are transported to the winery.

  “If you will be moving the harvester between blocks, counties or AVA’s, consider how you will transport it and who is capable of hauling,” Cordero said.

  More than ever, during these pandemic times, it is crucial to plan for large equipment purchases to ensure that the necessary machinery is available when you need it.

  “Order from your supplier months before the equipment is needed,” Giersbach from Gearmore said.

  He also advised vineyards to make sure the implements they purchase will end up reducing their labor costs.

  “Purchase high-quality equipment, which usually costs more than similar products but will normally last longer and perform better with less downtime,” Giersbach said.

By: Gerald Dlubala

Biologicals represent a broad grouping of pest management products that are sourced from nature and derived from plants, animals, fungi, bacteria and minerals. Whether or not a biological can be certified organic depends upon the active ingredients, inert ingredients and formulation procedures, as well as whether transgenics are used in their creation. Guidelines established by organic certification agencies such as the Organic Materials Review Institute (OMRI) determine whether a biological is qualified for certification in organic agriculture. And according to Dr. Melissa J. O’Neal, Senior Product Development Manager of Marrone Bio Innovations, the world of biologicals encompasses a new frontier for growers, and regardless of the size of their operation, they can benefit from biological use, with new and novel tools to add to their 21st-century vineyard management toolkit.

Marrone Bio Innovations Knows The Importance Of Integrated Pest Management

  “The use of biologicals is particularly important when taken in context with the concept of Integrated Pest Management (IPM),” said O’Neal. “IPM programs combine chemical, biological, cultural and other control methods to manage pests. In doing so, the efficacy of both biologicals and conventional materials is preserved for longer periods, and the development of resistance in pest populations is delayed through using multiple modes of action in rotational or tank-mix programs. Because the hurdles to registration for biologicals are lower compared to products based on synthetic chemistry, they can be brought to market more quickly and offer flexibility in terms of re-entry to treated areas. They are also safer for humans and other non-targeted organisms because they generally have favorable toxicity profiles compared to synthetic chemistries. All of Marrone Bio Innovations’ products have been proven to be safe for use with commonly utilized biocontrol organisms applied in vineyards.”

  The conditions of use are flexible, as biologicals can be used either in place of or in combination with conventional treatments. Both rotational programs and tank mixes are elements of what Marrone Bio Innovations refers to as their BioUnite™ approach, combining chemistry and biology. By using this combined approach, results outperform solo applications of conventional materials because of a higher efficacy due to the additive effect of multiple active ingredients in multiple methods of action. Programs like Marrone Bio Innovations’ BioUnite™ provide growers with IPM programs that harness the power of biology with the performance of chemistry, resulting in a more efficient food production system that is safe, affordable, sustainable and easy to use.

  “The comparative costs for biologicals can be very competitive to conventional chemistry, especially when used in programs,” said O’Neal. “All of Marrone Bio Innovations’ products are user-friendly requiring no additional labor, time, or logistics beyond those already used with conventional methods. Our products also have favorable safety profiles, with four-hour re-entry intervals and zero-day pre-harvest intervals. They are reduced risk, tolerance exempt, and all except Haven, our abiotic stress manager, are OMRI certified.”

  Biopesticides like those offered by Marrone Bio Innovations are split into two different categories, microbials and plant extracts.

  “Some of our most commonly used products are Regalia for Powdery Mildew and Venerate XC for mealybugs,” said O’Neal. “But we do offer a product portfolio to address insect pests, diseases and abiotic stressors of grape, including two bio fungicides, Regalia and Stargus, two bioinsecticides, Grandevo and Venerate, and a heat and sun stress protectant, Haven.”

  O’Neal said that biologicals have excellent efficacy when used in the manner they are intended, typically meaning with earlier application compared to conventional methods. Specifically, treatment thresholds should be much lower when working with biologicals, and in many cases, preventative treatments should be made when conditions become conducive to pest development. Although biologicals tend to kill pests more slowly, the damage being done by the pest is stopped at the time of application, even if complete mortality takes several days. Necessary practices connected with the use of biologicals involve careful scouting for pests, thorough recordkeeping, and the utilization of pest prediction models to lead the vineyard management’s decision making. Because treatment thresholds with biologicals are lower, the decision to treat must be made early in the pest population cycle. The methods aren’t any more time consuming than performing those of conventional materials, but they are likely to occur at earlier junctures. Retreatment intervals with many of their products occurs within one to two week intervals.

  “All in all, the future of organic farming is bright,” said O’Neal. “It’s a product of consumer preference, desire for sustainability, increasing regulatory agency pressure on the synthetic chemistries, and the boom of technologies that are available to growers. Trends and innovations in the organic space currently have a keen focus on the technology front, with computer prediction models, drone applications and remote technologies of many types being among recent hot topics. Biologicals will become a key component in both organic and conventional farming because of the many benefits, so vineyard managers and farmers are urged to always use a holistic mindset in their decision-making approach. Pest and disease management are continual tasks that extend beyond the growing season. These tasks require year-round planning based on continuous program revision and research of newly available and emerging management tools. In the present agricultural landscape, managers likely need to utilize a combination of biological, chemical and cultural management tactics along with any others that they encounter.” 

BioSafe Systems, Protecting Crops, Water And People

  “Vineyard managers today have many more options for producing a high-quality crop with minimal impact on their land or budget,” said Taylor Vadon, PCA, Technical Sales Representative along the North and Central California Coast for BioSafe Systems. BioSafe Systems are innovators of environmentally sustainable practices and products to protect crops, water and people across North America.

  “Biological inputs have become essential for vineyard crop protection and critical for integrated pest management programs, offering growers effective, low to no residue products that are less susceptible to pest resistance and have a minimal environmental impact. Some of the more innovative biological products bolster plant health, strengthen plants against abiotic stress, build soil biodiversity, improve nutrient and water uptake and boost crop quality and yields. Overall, biological products provide vineyard managers with a unique class of product options outside of the traditionally available chemistries to develop holistic management plans for their operations that still successfully meet the challenges of today.”

  As with many aspects of organic and conventional farming, choosing the correct method for your situation is critical. Vadon tells The Grapevine Magazine that organic products can always be used in conventional vineyards, often providing benefits that many conventional products don’t. A great example of a crossover organic is BioSafe Systems’ OxiDate®5.0, a broad-spectrum fungicide/bactericide that proves to be an ideal tank-mix partner with many conventional chemistries because its on-contact activity immediately eradicates pathogens reducing disease pressure, allowing the other chemistries to more effectively provide crop protection.

  “Biopesticides can be just as effective as conventional products if the correct product is chosen and used properly,” said Vadon. “The key to success is knowing when and how to use them. A grower must properly scout the vineyard and build a thorough understanding of the pests that challenge their crop. Then they will know what types of products to use and the correct timing threshold for peak efficiency. Many biopesticides require applications ahead of a widespread disease outbreak as a preventative approach. Depending on the target pest, level of pressure and timing of application, a grower can expect results from biopesticides within hours or days of application. The organic pesticide product sector has been one of the fastest-growing, encompassing categories like biopesticides and antimicrobials utilizing innovative ingredients including microorganisms, plant extracts, organic peroxide/peracetic acids, oils, soaps and minerals.”

  Sustainability of any biological use program is achieved through a well-structured management strategy that utilizes best practices to successfully manage the vineyard with the least amount of negative bearing on the ecosystem. We should all know, especially after the last couple of years, how unpredictable Mother Nature can be, so being flexible enough to adapt to changes is critical to success. It will always be the insect or disease pressure, incidence, and severity that dictates any adjustments to the vineyard manager’s schedule.

  “Our goal of sustainability extends beyond just the product itself and includes our manufacturing process,” said Vadon. “BioSafe Systems produces many of its products at target facilities throughout the United States, allowing us full control of the manufacturing process with the ability to provide the purest products for vineyard use. This way, we minimize our carbon footprint by having the products strategically located in the geographical areas of demand. With many conventional products becoming more restricted or removed, the rise in natural resistance building up in pest populations, and the growing concern of protecting people and land, the benefits of incorporating biological products into a winery’s management program are more apparent than ever. From the backyard trellis to the small family vineyard to the rolling hills of massive operations, biological products can always find a home. No longer is the question about if it’s worth it, but the question has become how you can afford not to use them. Actual product application frequencies and associated time implementing these management tactics do not greatly differ between organic and conventional practices, and when done properly, can be no more economically expensive than the conventional methods. The real hidden cost is the price on the environment that the traditional and conventional pest management practices present by leaving harmful residues due to improper handling or management.”

  “The number of acres using organic practices has steadily increased and shows no signs of slowing,” said Vadon. “Chemical companies will be focusing their efforts on the development and promotion of biologicals in farming that will ultimately address the changing needs of the end-users. The rising popularity of organic methods has begun a massive shift in pest control techniques and spawned many tank-mix programs combining conventional and organic methods. Mixing applications decreases pest resistance, strengthens the efficacy of other solutions and initiates smooth transitions to more sustainable growing methods. BioSafe Systems’ vineyard production guide lists ten organic product options for vineyard managers to use in the production practices, such as OxiDate®5.0 (organic fungicide/bactericide) for disease control from bud break through dormancy, AzaGuard® (bioinsecticide) for pest management, and TerraGrow® (organic soil inoculant) for improvement of soil microbiology increased vine vigor, reduction of transplant shock, increased root development and improved nutrient and water uptake.”

  “My advice is the same for any conventional and organic growers that use pest management products. Know your vineyard and know your products. It’s a good idea to get to know and develop a relationship with your pest control advisor and technical sales representative, as open communication with experts can only help you become more knowledgeable and better prepared as a grower.”

Brooks Winery: A Model Of Biodynamic Winemaking

  Since 2012, Brooks Winery has been Demeter certified as a biodynamic winery, working to uphold the integrity of their fruit and guide their wines as gently as possible while simultaneously considering the interconnectedness and impact of their operation on the environment and community.

  “Biodynamic farming is an integrated system that treats the farm as a whole and living organism,” said Claire Jarreau, Assistant Winemaker and Grower Liaison. “It is made up of the plants, soils, microbes, animals and people that are all working together in pursuit of harmony. Our holistic approach in the vineyard is to build soil fertility through the use of compost, biodynamic preparations and biodiverse cover crops with the incorporation of animals where possible. Through greater soil health, we grow stronger, more resilient vines that yield balanced fruit for great wine production. I highly encourage others seeking to practice biodynamics on their land to find community and support among other practitioners.”

Industry Specialists Help Vineyards Protect Their Most Valuable Commodities 

By: Cheryl Gray

In “The Wizard Of Oz,” Dorothy and her friends were afraid of lions and tigers and bears. For vineyards, danger lurks behind mealybug and nematodes and fungi. Oh my.

Insect pests and diseases can wreak havoc on vineyards, often causing irreparable and costly damage, destroying fruit, vines, even trunks – down to the root. That is why experts in managing these risk factors brandish prevention as their weapon of choice.

Atlas Vineyard Management

One such company is Atlas Vineyard Management, a Napa Valley, California, company founded in 2006. Its vineyard clients stretch from California to Oregon to Washington state. The company offers vineyard development, farming and viticulture services along with grape sales and marketing. AVM underscores what it describes as a successful track record of developing more than 2,000 acres of vineyards as proof that its pest and disease control methods are all built on best practices.

  Madeleine Rowan-Davis is Senior Viticulturist for AVM. With degrees from the University of California at Davis and Mount Holyoke College, she is a certified Pest Control Advisor with a Qualified Applicator’s License, both through the state of California. As a former researcher at UC Davis, Rowan-Davis’ education and experience focus on sustainable farming. She pointed to one of the most dangerous insect pests to vineyards.

  “The insect pest that incurs the highest costs per treated acre and poses a significant threat in the Northern California region, where we do a good amount of farming, is vine mealybug, which is arguably impossible to eradicate. Once it is present in a vineyard, it requires continued inputs to minimize spread into uninfected areas of the vineyard and prevent damage to the fruit.”

  Rowan-Davis told The Grapevine Magazine how vine mealybug triggers multiple problems, including disease. “Not only can it damage the fruit by producing copious amounts of honeydew that results in the fruit being covered in sooty mold, but they also vector multiple strains of grapevine leafroll virus, which reduces the ability of the grapevine to ripen its crop. The plant cannot be cured once it is infected, so this can result in a lot of expense – ripping out & replanting infected vines – as well as lost revenue since it takes several years for the replanted vines to produce a crop. Because this pest has multiple generations in a single season, it can be particularly bad in warm growing regions where populations can multiply more rapidly.”

  AVM offers its clients pest and disease scouting along with a customized management program.  The company deploys spray programs that involve Integrated Pest Management principles, which it says minimizes chemical use while maximizing the effectiveness of sprays required to eradicate a problem.

  “I would say that we advocate for management strategies to be well rounded,” said Rowan-Davis. “IPM guidelines are very helpful and allow us to minimize our reliance on chemical solutions while producing the highest quality wine grapes that a given site can produce. We use chemicals and management practices that are permitted in organic farming, even in our conventionally farmed properties.” 

  Like insect pests, there are diseases that affect some grape growing regions more than others, including leafroll and red blotch.

  “These diseases are both caused by viruses and can dramatically impact the quality of the fruit,” Rowan-Davis said. “Grapevine viruses are moved around with planting material if one doesn’t follow safe practices, and many can also be vectored from vine-to-vine by insects or other pests. Red blotch and leafroll are found in many growing regions, but the severity of the disease can differ depending upon varying environmental stresses.”

Advanced Viticulture, Inc.

  When it comes to fighting the diseases and insects that can destroy a vineyard, education, backed by experience, matters.

  Mark Greenspan, Ph.D., President and Viticulturist of Advanced Viticulture, Inc., has 30 years in the field, earning his Bachelor of Science in Electrical Engineering, Master of Science in Viticulture and doctorate in Agricultural Engineering, all from the UC Davis. He is also a certified crop advisor, certified professional agronomist and a licensed pest control advisor with the state of California.

  Advanced Viticulture opened in 2005 as a technical consulting firm specializing in water and nutrient management, soil evaluations and vineyard design. Its vineyard clients are along  California’s north and central coasts, across the U.S. and internationally. In 2011, the company expanded into vineyard management, providing services that include farming grapes and developing vineyards, primarily in Sonoma and Napa counties. Greenspan gave The Grapevine Magazine an overview of the damage caused by a range of insect pests.

  “Spider mites can rapidly cause loss of leaf function and can retard fruit maturation as a result, if the infestation and damage become excessive. Nematodes weaken the vines overall and can eventually kill vines. The nematodes can spread in the soil and create weak and dead areas within a vineyard block,” he said. “All of these pests are found throughout grape growing regions of the U.S., but spider mites tend to thrive under hot, dusty conditions under periods of vine water stress. The West Coast experiences far fewer insect pests – and definitely diseases – than the East Coast and other grape growing regions of the U.S.”

  According to Greenspan, some common diseases inflict significant damage to vineyards. “Powdery mildew is the most common and most damaging. It is fairly easy to control with fungicides, but the rotation of materials, timeliness, spray intervals and spray coverage is important for its control. This is a common problem in all growing regions. Trunk diseases are also very common and very damaging, and they include Eutypa and Botryosphaeria fungi, as well as Esca types of fungi. These are common in all regions and can damage a vineyard by killing the permanent structure of the vine.”

  Choosing between either chemical or organic methods is about weighing outcomes. “We don’t advocate for either, but find that a mix of ‘chemical’ and organic materials is often the best approach,” Greenspan said. “Purely organic methods can be very difficult to make effective, especially for difficult pests like vine mealybug and spider mites. Fungal diseases are more readily treated using organic methods, but conventional materials are often more effective and require fewer passes through a vineyard to attain control. Also, it is not correct to label this ‘organic versus chemical.’ Organic products may be chemical as well but are derived from natural sources without extensive processing.”

Sym-Agro, Inc.

  Sym-Agro, Inc., based in California’s San Joaquin Valley, has developed new takes on what nature has to offer to combat insect pests and diseases plaguing vineyards. President and CEO Peter Bierma founded the company in 2012.

  “I started Sym-Agro based on the belief that nature has antigens for every problem and, if you balance control with biology, you can grow really good crops with very little conventional pesticides,” said Bierma. “Now, with technology to validate [the] efficacy of essential oils, beneficial bacteria, etc., and more pressure on synthetic pesticides, this segment is growing very fast.”

  Bierma, with three decades of industry and field experience, said Sym-Agro offers three specific products for grape crops: Cinnerate, Instill Copper and ProBlad Verde.

  “ProBlad Verde provides excellent control of powdery mildew and botrytis. It is one of the few fungicides which has direct activity on all life stages of disease and provides 10-14 day spray intervals. Secondly, it is excellent for powdery mildew knockdown, stopping disease within four to eight hours and then providing control for 10-14 days.”

  Cinnerate is a triple-action threat, Bierma said, acting as a miticide, fungicide and insecticide. Based on emulsified cinnamon oil, it is touted as a crop-safe but direct killer of all life stages of disease, including spores. Results come through either direct contact with the spray solution or through fuming activities. Used to reduce post-harvest rot through a pre-harvest application, Cinnerate is also a combatant against well-known insect pests, including mites, leafhoppers and mealybug.

  Phomopis, powdery mildew and botrytis are the primary targets of Instill Copper, a low dose, liquid copper fungicide. Bierma told The Grapevine Magazine that Instill Copper leaves no visual residue on treated grapes and is safe to use throughout the growing season.

Suterra

  Suterra, a global leader for more than 30 years in pheromone insect pest control, creates products for use in six continents. In California alone, it provides services to an estimated 180,000 vineyard acres. Suterra is located in Bend, Oregon, where it houses research and development, pheromone synthesis, product engineering and manufacturing. Its parent company is The Wonderful Company, one of the world’s largest agricultural conglomerates and owner of wine brands that include Landmark, Justin and JNSQ.

  Suterra products are available in multiple forms, including proprietary aerosol emitters, sprayable formulations, membrane dispensers and specialized monitoring lures. Its chief innovations are CheckMate VMB-F and CheckMate VMB-XL, touted as groundbreaking in the market. Sara Goldman, Technical Support Manager for Suterra, explained why these synthetic replicas of the sexual reproduction pheromones of vine mealybug are so formidable.

  “By hanging VMB-XL dispensers or spraying VMB-F microcapsules, vineyard managers confuse flying male vine mealybugs so that they can’t find females to mate. This reduces the pest’s overall populations and is completely safe for all beneficial species and humans,” Goldman said. “CheckMate prevents damage and extends the lifespan of insecticides by mitigating resistance development. We also offer specialized lures to help Pest Control Advisors monitor for vine mealybug and grape mealybug.”

  Goldman told The Grapevine Magazine that CheckMate VMB-F is more commonly used by conventional growers. It works with any IPM tools, from beneficial parasites and predators to conventional insecticides. That flexibility and compatibility make it a popular choice for vineyards defending against vine mealybug. An infestation, she said, can happen to even the most careful growers. 

  “Although the adult male vine mealybug can fly, the females and immature vine mealybugs, also known as ‘crawlers,’ are wingless and unable to fly. It is these non-flying life stages that spread the infestation into and through a vineyard in several ways. The most direct way is at planting through infested nursery stock,” she said. “Another common transmission method is through farm equipment. Do not allow contaminated equipment, vines, grapes or winery waste near un-infested vineyards. Mealybug crawlers can even hitch a ride on field crews that have been working in an infested vineyard or with prunings and plant residue from the previous season. They can also be dispersed by birds and other wildlife, surprising even the most meticulous growers.”

  Once insect pests & diseases get out of control, both can create an uphill battle for vineyards. Experts say that for new vineyards, prevention starts with clean and disease-resistant plant materials. For mature vineyards, early detection and strategies developed by specialists who know best how to control and eradicate the threats can make the difference.