Bunch Rot Part II: Sour Rot

July 28th, 2015
Bunch Rot Part II: Sour Rot

This is the second of a two-part article on bunch rot in winegrapes. Last week’s article discussed Botrytis cinerea, including symptoms on various parts of the vine (foliage, canes, berries), the disease’s life cycle, recommended management considerations (sanitation, canopy management, irrigation, chemicals), and resistance. In Part I the authors also gave an overview of the relative susceptibility to bunch rot of major grape varieties. Ripening berries are susceptible to invasion by many…

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Bunch Rot Part I: Botrytis cinerea

July 21st, 2015
Bunch Rot Part I: Botrytis cinerea

Many species of microorganisms may infect grape berries, including fungi and bacteria. Several species of these fungi, including Botrytis cinerea, Aspergillus niger, A. carbonarius, Cladosporium cladosporioides, C. herbarum, Penicillium spp., Rhizopus arrizhus, and Alternaria spp., participate in bunch rot of grapes, though the latter four species are not true pathogens but rather secondary colonizers. Botrytis cinerea may directly penetrate and infect healthy berries, but the others require wounds or previously…

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How ASEV led us to Facebook

July 14th, 2015
How ASEV led us to Facebook

The American Society of Viticulture and Enology (ASEV) held their 66th national conference in Portland, Oregon on June 15-18. As in the past, I attended this year’s conference as a representative of the Lodi Winegrape Commission and Lodi’s 750 growers. While there I had the opportunity to learn about Dr. Matthew Fidelibus‘ use of social media, especially Facebook, as a tool for communicating with growers. In this Coffee Shop post, I’ll…

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Special Series: The Economics of the Drought for California Food and Agriculture

July 7th, 2015
Special Series: The Economics of the Drought  for California Food and Agriculture

The extreme drought that has gripped California over the past several years is causing onerous adjustments in the natural and human environments. Agriculture, which uses much of the state’s water, is at the center of many of these arduous responses. The 2015 impacts of the continuing drought are still underway, but in this special ARE Update issue (re-published here in the Coffee Shop with permission), we project responses and consequences…

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