Eutypa Dieback in Northern California Vineyards (Part II of III)

October 28th, 2013
Eutypa Dieback in Northern California Vineyards (Part II of III)

Welcome to part two of a three part Coffee Shop series on understanding and managing trunk diseases in Lodi vineyards. In part one of this series we discussed how to identify trunk canker diseases, practices to prevent them, and management strategies for new and established vineyards. Today, we will dig deeper into the subject and learn about the diseases’ historical development in California, how the disease impacts vineyards, it’s symptoms,…

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Surface Renewal: A New Tool for Managing Vine Stress and Simplifying Irrigation Decisions

October 21st, 2013
Surface Renewal: A New Tool for Managing Vine Stress and Simplifying Irrigation Decisions

Irrigation management affects the quality of winegrapes (Chapman et al. 2005). Achieving quality standards is essential for economic viability, and research conducted by the Commission’s Matthew Hoffman and his UC Davis colleagues found that winegrowers in Lodi, the Central Coast, and the Napa Valley, rank winegrape quality as their most important vineyard management goal (Hillis et al.2010, Hoffman et al. 2011 , Hoffman et al. 2011 ). Common irrigation management…

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Disruption of Vine Mealybug Mating

October 14th, 2013
Disruption of Vine Mealybug Mating

The invasive vine mealybug (VMB) is a carrier of grapevine leafroll-associated viruses (GRLaV) and, therefore, among the most damaging grapevine pests in the United States. While a variety of chemical and biological controls have been developed to target the VMB, none are capable on their own of effectively limiting the spread of GRLaV. This work was undertaken to see whether mating disruption – a strategy of using pheromones to radically…

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Frost 101: Understanding Frost in Vineyards

October 7th, 2013
Frost 101: Understanding Frost in Vineyards

All winegrape growers know what frost is, but not everyone understands the physics behind how it develops. Such an understanding is useful when figuring out how to protect your vines from frost damage. This article was written by Steve Hammersmith, president of Shur Farms. At Shur Farms we specialize in vineyard frost prevention and work with vineyards throughout North America. We designed and installed the first North American cold air…

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Introducing Larry Whitted – Coffee Shop Contributor

October 2nd, 2013
Introducing Larry Whitted – Coffee Shop Contributor

The newest contributor to the Coffee Shop is Larry Whitted, an independent pest control adviser (PCA)based in Lodi. Larry graduated from the Pest Management Program at U.C. Berkeley in 1980 and now has 34 years of experience as a PCA working with fruit and nut crops throughout California and also in Chile, Argentina, Mexico and Egypt. He provides pest control advising service to 13 growers in Lodi, Clarksburg and Amador…

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