2012 Fungicide Workbook

Here comes 2012 version of “Workbook for developing an effective fungicide program for Wine grapes in VA” (<- click to download a pdf file).  If you receive Tony’s Viticulture Notes,… Read more

Disease risks from 4/2/12 precipitation

Rain from yesterday (4/2/12) started around 9PM on 4/1, and lasted until 2:30AM or so.  The RH was high (>90%) until 3:55AM, thus this was about 7 hours of wetness… Read more

Frost damage from 3/27/12

As of 3/29/12, about 20% of our Chardonnay buds and shoots are showing the injuries from the frost event on 3/27/12.  Damages on Merlot is about 5%.  I hope your… Read more

More discussion on powdery mildew!

I guess both Anton and I tend to work on Sundays…  He send me two nice pictures of flag shoots. and As you can see leaf surface is covered with… Read more

Flag shoots symptom of powdery mildew

In reply to the previous post about powdery mildew, Anton (Baudoin of VT) made a very good comment about “flag shoots” of powdery mildew.  This is a case of infection… Read more

Initial infection event for powdery mildew

Well, it typically won’t happen until May or so, but under this weather conditions, you cannot expect the usual trend.  Often time, powdery mildew is common under dry weather because… Read more

Bud Break!

Our 4-yr old Chardonnay was about 10% bud break yesterday (the 21st) morning.  Our 4-yr old Merlot was <5% bud break. Older vines are still holding off. Well, the season… Read more

Fungicide planning template 2012

Thanks for those of you attended our first annual grape IPM workshops!  The number of attendee was about 110 people! I am still working on the 2012 version of the… Read more

Bud swell 2012

Two weeks of 80’s and 70’s surely moved things forward.  When I checked our Chardonnay buds last week, it was swelling, but was still tight, but now it looks like… Read more

IPM workshops + handout from pruining workshop

As I indicated at the VVA meeting, we are planning to have three IPM workshops this year. The dates ended up earlier than what I proposed, but with given warm… Read more
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