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
Saturday, April 23, 2011
Scab infection period Apr 22-23
Wet 25 hr at 42-46°, this would result in a serious secondary infection period where scab lesions are already present in trees that were not adequately protected during the first primary period Mar 30-Apr 1.