Skip to main content

Recent disease events

I was away for several weeks for a series of meetings, and of course things happen when you are not around...

7/28: 9 hours of wetness, around 66F (low Botrytis and downy risk event)
8/6:   12 hours of wetness, around 64F (low Botrytis and downy risk event)
8/7: 13 hours of wetness, around 57F (probably not much of risk event)
8/11: 19 hours of wetness, around 60F  (low Botrytis and downy risk event)
8/13: 13 hours of wetness, around 60F  (low Botrytis and downy risk event)
8/20: 14 hours of wetness, around 65F  (medium Botrytis and downy risk event)
8/23: 6 hours of wetness, around 65F (low Botrytis and downy risk event)
8/24: 10 hours of wetness, around 62F  (low Botrytis and downy risk event)

I will have a few more updates coming up...

Comments

Popular posts from this blog

2021 Pest Management Guides for grapes (UPDATED 24 March 2021)

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

Late-season grape disease management tips.

Recent rains and more rains in the forecast made me think of downy mildew. Let's take a look at what the NEWA DMCast model says about downy mildew risks from the past two weeks. Westfield, NC (South of Stuart, VA) There were six DM risk events, including one that happened today.  (Note: we have a new weather station in Bristol. You can check the weather data, but the DMCast model is not working yet. I notified the NEWA about the lack of DMCast outputs.) Floyd, VA There were four days with downy mildew risk event(s) since the beginning of the month. Red Hill There were four days with downy mildew risk event(s) since the beginning of the month. Washington, VA There were nine days with downy mildew risk event(s) since the beginning of the month. Winchester, VA There were five days with downy mildew risk event(s) since the beginning of the month. It looks like there were more downy mildew risk events as we move northwards. Also, recent warm and humid nights can promote the downy mildew