As we expected, Winchester area had a wet weekend. We had to major rain events, which resulted in 11 hours and 10 hours of wetness, both are in upper 60F to lower 70F range. These are downy mildew and Botrytis risk events. Once again, humid nights we are experience can be a precursor event for downy mildew risk events because these nights favors spore production of downy mildew pathogen.
Updated: Links below are for the 2021 edition of Pest Management Guides. The first one is for home gardens, and the second is for commercial productions. I asked them to provide by chapter (= crop) and they made changes. :) 1) Visit the page by clicking one of the links below. (It is rather a slow page. Please be patient.) 2) Scroll down until you see "Links to individual chapters." Grapes are chapter 3 for both Home (Home Fruits) and Commercial Crops (Grapes) 3) Once you get to the site, click "PDF", then "Preview", and it will open a new window. 4) Scroll down a bit, and click "Download Version" to download the file to your computer. 2021 Home Grounds Pest Management Guide 2021 Horticulture and Forest Pest Management Guide
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