Page 60 - Grapevine May-June 2019
P. 60
Around The Vineyard
culture is very different from what I am used to in
Trim-N-Prun’ BTS-104HD California growing regions. Most of the vineyards
in Argentina have planted vines on their own roots
(i.e., not grafted onto a rootstock) as the philoxe-
ra pest is not commonly found in Argentine grape
growing areas. Besides providing protection from
philoxera, rootstocks confer resistance to nem-
atodes, salinity, and can control the vigor of the
vines in the vineyard. Consequently, more vine-
yards in Argentina are being planted with grafted
vines, especially in Mendoza’s newer and more
sophisticated growing regions (Valle de Uco). In
NEW Concept in contrast, the vineyards in Chile are very similar
to the ones I visit in California and strikingly dif-
Vine Trimming & Pre-Pruning! ferent from those in Argentina. The majority of
the vines in vineyards are grafted and trained in a
• Universal Hydraulic Vine & Bush Trimming, Cutter Bars.
• Opens foliage for better dust and spray penetration. similar fashion to Californian vineyards. The Andes
• Adapts to almost any trellising system or terrain. Mountains that divides Argentina from Chile influ-
• Reduce Pruning cost over one third. ences the climatic conditions of each of the coun-
• Cuts harvest labor by easier access to crop. tries. Therefore, the rainy seasons, availability of
For More Information Contact...
Bechthold Tractor Service water and stresses present in each winegrowing
10755 E. Hwy. 12 • Lodi, CA 95240 area are very different.
Phone: 209-368-2031
Website: www.bechtholdtractor.com Grapevine Diseases are Found
Wherever Grapevines are Grown
Dry Material Spreaders When it comes to diseases Argentine and Chilean
viticulture is not different from other growing
areas. As I mentioned earlier, common diseas-
es caused by Leafroll viruses, Vitiviruses, Fanleaf,
Agrobacterium, and fungal trunk diseases must
have arrived on site when plant material was
imported. These are important diseases that affect
Custom Sizes & Shapes both grape quality, yield, and longevity of the vine-
yards. In Chile and Argentina, I have witnessed the
Are Our Specialty! presence of Syrah Decline, a disorder that affects
both grafted and not grafted plants. At the ICVG
meeting, Joshua Pucket from UC Davis Foundation
S&A Manufacturing offers a full line of Plant Services reported that Syrah Decline symp-
fertilizer handling & spreading equipment toms are linked to genetic markers present in cer-
including portable or fixed Conveyors, tain Syrah and Shiraz clones. Interestingly, when
Storage Containers, Bulk Bins & Tanks. symptomatic Syrah selections were subjected to
the meristem tissue culture technique used to
To see our full line visit our website! eliminate known viruses and viroids, the symptoms
www.samfg.com persisted, suggesting that Syrah Decline is not
S&A Manufacturing caused by any of these infecting agents. Research
in France support these findings as symptoms are
7211 N. Pacific Ave. • Livingston, CA 95334 restricted to certain grapevine genotypes. The
Phone: 209-394-8048 • Fax: 209-394-4522 news that Syrah Decline is a genetic rather than
pathologic disorder will help growers prevent
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