We have had the following additional extended wetting periods in August:
Aug 6-7; 15 hours at 74º with 0.85" rainfall.
Aug 13-14; 12 hours at 69º with 0.01" of rain.
Aug 14-15; 14 hours at 67º with 0.18" rainfall.
As of today we have reached 491 accumulated wetting hours- almost twice the threshold for development of sooty blotch and flyspeck. This is running about 70 hours ahead of this time last year.
We are observing sooty blotch and flyspeck and bitter rot on poorly protected apple trees.
Disease management information directed mostly to the Frederick County Virginia tree fruit industry, updated as needed throughout the growing season. Keith Yoder, Virginia Tech Agricultural Research and Extension Center, Winchester, Virginia
About Me
- Keith Yoder
- Professor Emeritus of Plant Pathology, Virginia Tech Ag. Research and Extension Center, Winchester, VA
