Last week we had 11 hours of wetting, bringing us to a total of 154 accumulated hours at our AREC.
This year we had 28 dry weather "mildew infection days" in April-May compared to 45 last year, but secondary mildew symptoms are common where control was not adequate. Control is still advised where shoot growth is continuing. Over the 18-year period that we have recorded this, the number of "mildew days in April-May has ranged from 24 to 49.
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
