Grape Disease Risks: 5/14 – 5/21/2025

Here are snapshots from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW = Powdery mildew, BR = Black rot, and… Read more

At bloom grape disease management reminders

I hope you are enjoying the much-needed rains in your area. It seems a bit early to talk about bloom, but vines are moving much quicker than I anticipated, probably… Read more

Grape Disease risks 4/5-/9/2025 and Slides from today’s meeting

Here are snapshots from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW = Powdery mildew, BR = Black rot, and… Read more

Post-bloom disease management slides

Thanks for joining our meeting today. Please find a copy of my slides from today, which include this week’s grape disease risks. Read more

Slides from today (including disease risks from the past four weeks)

Thank you again for joining the session earlier today. Please see my slides below. We also discussed the requirement to check the limited area for restricted pesticides. Please visit this… Read more

Reminders for early-season grape disease management

Phomopsis cane and leaf spot One of the diseases you need to consider soon after bud break is Phomopsis cane and leaf spot. It causes minor leaf spots, which are… Read more

2023 Fungicide application template

Please find an updated version of the fungicide application template at the end of this post. As usual, I thank Mr. Robert Ramsey, who shared his original template.  This is… Read more

Presentation slides from the VVA and Eastern Viticulture and Enology Forum

It was really nice to see you all at the VVA. Please find my presentation slides from the meeting. The first file is the same as I presented at the… Read more

Grape disease management considerations at the time of pruning.

Many of you probably started your winter pruning. Please find the link below for a handout that I distribute at our pruning workshop. Since this year’s workshop will be held… Read more

Grape Disease Risk Summary 7/27 – 8/3/2022 and seasonal reminders

Here’s a snapshot from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW = Powdery mildew, BR = Black rot, and… Read more
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