Thursday, May 19, 2011

Disease risks from 16 May- 18 May

The rain started around 9:20 PM on 16 May in Winchester, and since then, there were several rain and thunderstorms went through the area.  The relative humidity remained high even between the rains, and it was around 10 AM on 18 May when things were started to dry out.  Thus, it was about 38.5 hours of estimated wetness event, with 0.08 inches of rain and average temperature of 62F.  As expected, it was long and warm enough for Phomopsis, black rot, and downy mildew.

We were not affected, but some of you have experienced hails during this week's series of wet weather events.  Hopefully, it did not cause a major damage to your vines.

It seems that the chance of precipitation is low for tomorrow, Saturday, and Sunday. 

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