University of California
UC Ag Experts Talk
Past webinars - Grape pests
Insects in the Vineyard by Dr. Cindy Kron (April 19, 2023)
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Dr. Cindy Kron discussed the importance of proper insect identification in IPM and discussed which insects in vineyards are known pests and cause damage or vector pathogens that cause disease, and which are beneficial (should be protected) or neutral (no action is needed). Concepts of economic thresholds in IPM were discussed; what they are and how are they used to make informed pest management decisions. She also discussed how to identify all life stages of spotted lanternfly. (Presentation slides in the PDF format)
Grape Powdery Mildew Management and Challenges (August 11, 2021)
- In this 2-hour webinar, various speakers from UC and UCCE discussed powdery mildew identification and biology; history of sulfur use, formulations, mode of application, and role in resistance management; air-assisted sprayer settings, air induction nozzles, and using spray cards to assess coverage; the effect of certain weather conditions on drift; powdery mildew fungicide resistance and the importance of FRAC codes; and the efficacy of various products for the management of powdery mildew in vineyards.