From bud break to pre-bloom disease considerations

Our reds broke buds, and whites have about 1-inch shoot growth on it today, and more rains in the weather forecast. It is time to think about Phomopsis! What happen… Read more

Early season disease reminder: Phomopsis cane and leaf spot

Our Chardonnay and some of the hybrid vines are in bud swell stage as of this week, and others are tagging along.  It looks like we will see bud break… Read more

Presentations and handouts from Weekend Warrior IPM workshop

It was very nice to see you all at the Weekend Warrior Grape IPM workshop. I think we had a very good time with lots of discussions. Hopefully to see… Read more

Fungicide application template

I have updated my fungicide application template that I have been using for my fungicide guides. If you are interested in, it can be downloaded from this link. (will open a… Read more

Last stretch!!

I heard that some of early cultivars are ready to be picked on 7-10 days.  Looks like no tropical storms to worry, yet… (crossing my fingers!) There have been frequent… Read more

Seasonal disease management considerations toward the end of the season.

Most of us are about to finish critical time when clusters are susceptible to infection by downy mildew, powdery mildew, and black rot.  This critical time varies by varieties, but… Read more

An extensive wetness event recorded (and still going)

A cool and wet Fourth of July weekend resulted in a very long leaf wetness hours. So far, more than 12 hours of wetness has been recorded at Winchester AREC,… Read more

Another reminder on seasonal diseases

Photo: we have started to see powdery mildew on clusters. I hope you are not! Looks like series of thunderstorms are hitting various part of the state this week. Just… Read more

Handout from last week’s meeting + we are still in the critical period!

Here’s my handout from last week’s meeting at Stone Tower Winery. Thanks for those who attended the meeting! It looks like we may have rains here and there this week.… Read more

What to do when you receive a lots of rain after fungicide application?

At Winchester area, we ended up having a pretty good weekend. There were several periods with rain, but it was not as extensive as the forecast. We received about an… Read more
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