Wine and Viticulture

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In the Vineyard

Evelyn Alvarez, undergraduate student supervised by Assistant Professor Shunping Ding,
spraying fungicide to control powdery mildew.

Controlling Powdery Mildew

By Assistant Professor Shunping Ding

Wine grape powdery mildew is an important disease that affects wine grape yield and quality. Assistant Professor Shunping Ding and students are working to investigate powdery mildew management strategies. 

On a plot in the Gallo Family Vineyard ranch in Santa Maria, California, Ding and her students have been testing a variety of combinations and sequences of chemicals to compare their efficacy in controlling powdery mildew. Students learned to design fungicide programs, choose chemicals, calibrate sprayers, and practice pesticide spraying. 

“We hope this is a beneficial project for our future vineyard managers,” Ding said. “Powdery mildew is a polycyclic disease, and vineyard managers and growers need to design their fungicide programs wisely to effectively control powdery mildew as well as to manage fungicide resistance to achieve sustainable long-term management of the disease.”


Visit Vines to Wines Fall 2020 to read more stories.

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