Tuesday, June 17, 2014

Disease risks from last night

A thundershower hit Winchester area around 6PM last night, resulted in 16 hours of wetness with lower 60F in average temperature.  It was disease risk event for black rot, downy mildew, Phomopsis, and Botrytis.

As with last few rains, it resulted in a warm and humid night that helps downy mildew to produce spores.  Many of us are still in critical period for cluster infection, and this is the time of the year to be on top of the game.  Please refer to previous few posts about spray ideas.

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