Winchester area received a shower yesterday, resulted in 5+ hours of wetness in lower 70F. It was an infection risk event for downy mildew, and very low infection risk event for Botrytis. In addition, we observed dews in the last two nights, indicating high humidity, which can trigger downy mildew to produce spores. As usual, late season downy tends to appear on younger leaves on the top of the canopy. Please keep eyes on them! There is a chance of rain on Sunday and Monday.
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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