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
Monday, May 24, 2010
Scab and rust infection periods
May 23-24: Apple scab and cedar-apple rust infection period; wet 14 hr at mean 65º.
May 22-23: Apple scab and cedar-apple rust infection period; wet 17 hr at mean 65º with 0.09 in. rain.