Pre-harvest disease management considerations

Now the season is wrapping up, and one of questions I get often is “when to spray what to protect your crop at the last stretch”.   Unfortunately (as with everything… Read more

For this Saturday’s and next week’s rain events

Since we are expecting heavy rain event on Saturday, plus about to be done with the critical time for cluster infection by downy mildew, powdery mildew, and black rot (which… Read more

Bloom time fungicide considerations

The warm May pushed our vines forward rather quickly.  Many people in northern VA are about to see blooms (our 3-year old young Chardonnay vines are trace bloom), and I… Read more

On-going disase risk

As usual, we start our season with rains.  It has been more than 13hr of wetness so far at Winchester with an average temperature of low 50s.  It has accounted… Read more

Last stretch spray consideration

Due to the rain event over the weekend, many people are concerned about protection for next week or two before the harvest.  At this point, the tools are rather limited… Read more

Seasonal Disease Management Consideration toward the end of the season.

Finally, we are having relatively dry weeks!  Most of us are about to finish critical time where clusters are susceptible to infection by downy mildew, powdery mildew, and black rot. … Read more

Disease risks from last few days, and a plan for next spray

Boy, what a week!Winchester area received about 17 hours of wetness with average temperature of 20 C (68F) on the 11th, 14 hours of wetness with average temperature of 22… Read more

Seasonal disease management reminders at bloom time

Many people in northern VA are about to see blooms (our Chardonnay vines are trace bloom as of June 2nd, the one on the picture is one of the few… Read more

Early season disease management

Looks like we are expecting three days with high chance of rain from Monday.  I sprayed our vines with mancozeb (3 lb/A) and sulfur (3 lb/A) yesterday. At this point… Read more

Fungicide schedule template, 2013 version

I am in the process of updating my fungicide workbook for the upcoming season.  I have made a few changes on the template for fungicide scheduling.  Since many people want… Read more
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