On going disease risk since 10/9/13…

It finally stopped raining, but we (Winchester area) are having an on-going wet event since 10/9/13.  I counted >108 hours of wetness with an average temperature of 54F (ranging from… Read more

Disease risk from Monday

Rain on this Monday resulted in 10 hours of wetness with an average temperature of 62F.  It was warm and long enough for both downy mildew and Botrytis.  Once again,… Read more

Night time dew events

Since 9/2 or so, we are observing dew events that were wet enough to make our leaf wetness sensor wet almost every night.  Since our sensors were located about the… Read more

Disease risks from Aug 28-29th

A rain event followed by high relative humidity (+28 hours of wetness in high 60F) created disease risk event for downy mildew and Botrytis on 8/28-29. Read more

Disease risk from yesterday

A wetness event recorded yesterday was infection event for Botrytis and Downy mildew.  Refer to yesterday’s post on spray choices.  Please make sure to alternate mode of actions to reduce… Read more

Disease risks 8/14, 17, and 20

Continuous rain and high relative humidity caused Botrytis and downy mildew infection risk events on the 14th, 17th, and 20th. At this point of the season, a phosphite (aka phosphonate… Read more

Disease risks 8/9-8/13

Botrytis risk has been high from 8/9 to 8/13 due to frequent rain event.  This also means that downy mildew risk is high too. (I am at a conference, so,… Read more

Disease risks from 8/6 and 8/7

On 8/6 a wetness event (~10 h in lower 70F) was recorded at Winchester, and there was another event today (~16 h in lower 70F)… Both are risk event for… Read more

Disease risks 8/3-8/4

There was ~27h wetness event recorded between 8/3-8/4 with temperature varying from upper 60F to lower 70F.  It was an infection event for Botrytis and downy mildew. Read more

Disease risks from 7/31-8/1

Between 7/31-8/1, there was several wetness hours recorded, and one of them was 16h with an average temperature of low 70F.  It was a disease risk event for downy mildew… Read more
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