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
Thursday, May 19, 2011
Wetting periods May 17-19.
We recorded two scab and cedar-apple rust infection periods: May 17-18 (12 hr, 60°, 0.12" rain) and May 18-19 (15 hr, 60-51°, 0.04' rain). This makes seven infection periods and 3.89 inches of rain in the last week.