We had a short shower event last evening; however, it was short and relative humidity did not stay high for a long time. Thus, it was not a major disease… Read more
There were a few isolated light showers passed around Winchester area early this morning, resulted in 6 hours of wetness with low 60’s average temperature. This was a low infection… Read more
Another thunderstorm went through Winchester area last night. Although the first few hours were warm, the temperature dropped to low 50’s during the night. The total wetness was 15 hours… Read more
A thunderstorm went though Winchester area yesterday afternoon, and since then the cloud cover kept RH very high. So far we observed 17+ hours of wetness, and the average temperature… Read more
Our 5-yr old Chardonnay is about 50% bud break stage as of today. At this time of the year, the number-one concern is Phomopsis cane and leaf spot. They produce… Read more
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
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
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
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
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