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VINEYARD REVIEW DON’T FALL FOR THEIR BULL. Buck the rest. Get Acadian ® . Talk is cheap. Other products claim to be as effective as Acadian ® but lack the research or in-field trials to prove it. Ask for the ingredients. Ask for the research. Better yet – Ask for Acadian ® … 100% Ascophyllum nodosom. Get growing. Potency matters. Get growing. Acadian Plant Health is a division of Acadian Seaplants Limited, Acadian ® is a registered trademark of Acadian Seaplants Limited. acadian-usa.com 40 Progressive Crop Consultant November / December 2019 Do Not Print (for office use only) McDaniels Marketing • Client: Acadian• “2019 Acadian Bloom Ads” Print Ad • Ad Size: Half Page horz., 7.25” x 5”• 4/c, 300 dpi • Progressive Crop Consultant • Pub Deadline: asap
VINEYARD REVIEW Continued from Page 39 Vineyard Mechanization Conversion Kurtural also led research on vineyard mechanization conversion in a 40- acre vineyard in Napa County. The research began as a labor-saving trial, but Kurtural reported that when they began looking at the physiological aspects of how plants grow, there were benefits to fruit quality as well. Taller canopies due to increased trunk height protect the developing winegrapes from sun damage. The taller canopies and the increased yields from mechanically pruned vines also mean that water and nutrient requirements in the vineyard can be different from those in hand-pruned vineyards. Zhuang confirmed that interest in mechanical pruning and vineyard transition is growing, not only in the San Joaquin Valley, but on the Central Coast where sufficient labor for cultural practices is becoming difficult to find. The premium wine grape growing areas in northern California have strong traditions with hand spur pruning, but tighter labor markets may lead growers there to consider mechanization. The vine re-training could also be feasible for raisin grape vineyards, Zhuang said, but not for table grapes due to different production needs. Changes in Nutrient and Irrigation Management Where mechanized pruning is done, Zhuang said, there would need to be changes in nutrient management and irrigation. Water and fertilizer requirements for mechanically pruned vines are different than those of hand pruned vines. “Canopies will grow faster and bigger on those vines,” he said. Mechanized pruning operations will leave many more buds, as many as double the number left after spur pruning, and that will change the plant physiology. Buds will break earlier in the growing season, Zhuang said and the vines would begin to push new growth much faster. The early growth will mean early water demands will need to be met. Demand for nutrients will be accelerated by the early growth, larger canopies and yields. Labor Nick Davis, ranch manager for The Wine Group, a company that farms 13,000 acres of wine grapes between Kern County and Lodi, said reducing the impacts of increased labor costs prompted the decision to move toward mechanized pruning in their vineyards. Any new vineyard developed by the company, in the Central Valley, will be set up for mechanization, Davis said, and the goal is to become 100 percent mechanized in the future. “We know this system works, but we will be working on managing the hedge-pruned box and not allow it to creep out,” Davis said. Transitioning existing vineyards requires removal of cross arms and foliage wires and t-posts, but if the berry quality and the production are the same or better than vines that are hand pruned, transitioning will continue, Davis said. Comments about this article? We want to hear from you. Feel free to email us at article@jcsmarketinginc.com November / December 2019 www.progressivecrop.com 41
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