Skip to main content

Fungicide application template, a table of fungicide resistance, and upcoming meetings

I have updated my fungicide application template that I have been using for my fungicide guides. If you are interested in it, download it from this link. This will open a new Google Doc page, which says it is "View Only"; however, you can download the file. Select "File" from the top menu of Google Drive, and you will see the "Download As" submenu which has several options for the file type.

Many thanks to Mr. Bob Romsey who shared the original template with me!

Please note that this is just a template. Your program will differ based on what you see in your vineyard(s). Please use it with VCE's Pest Management guide or Southeastern IPM guide (linked under "Resouces"). Speaking of the Southeastern IPM guide, I created modified tables that consist of a list of commonly used fungicides in the vineyard with their FRAC codes and fungicide resistance risks, and a template for the spray program. I hope these materials will help you organize your spray schedule.

Although these are useful, please check our new pesticide management tool, grapeIPM.org, which will not only help you plan spray schedules but also, allows you to share your plan with your co-workers and print out postings for the WPS standard. It has helped me quite a bit of time and effort to organize my sprays for sure!

We are also planning to have several meetings in March and April. All will be online events.

March 16th: Grape IPM workshop 
March 31st: Grape disease management workshop (in English)
April 1st: Grape disease management workshop (in Spanish)
April 9th: GrapeIPM.org (online pesticide management tool) workshop

In the grape disease management workshops on 3/31 and 4/1 and grapeIPM.org workshop on 4/9, I will provide you a series of online lectures that you can watch before the meeting. At the meeting, I will go over the key items, and we will spend most of the time with Q and A and discussions. I will post more information and ask Tremain to distribute information once we have set time and format, so, please stay tuned.


Labels:

Comments

Post a Comment

Please leave your comment here. In order to avoid spam messages, l moderate comments, thus it may take a few hours for your comment to be posted on the page.

Popular posts from this blog

2021 Pest Management Guides for grapes (UPDATED 24 March 2021)

Updated: Links below are for the 2021 edition of Pest Management Guides. The first one is for home gardens, and the second is for commercial productions. I asked them to provide by chapter (= crop) and they made changes. :) 1) Visit the page by clicking one of the links below. (It is rather a slow page. Please be patient.) 2) Scroll down until you see "Links to individual chapters." Grapes are chapter 3 for both Home (Home Fruits) and Commercial Crops (Grapes) 3) Once you get to the site, click "PDF", then "Preview", and it will open a new window.  4) Scroll down a bit, and click "Download Version" to download the file to your computer.  2021 Home Grounds  Pest   Management   Guide 2021 Horticulture and Forest  Pest   Management   Guide
Post a Comment
Read more

At bloom disease management tips

Recent cooler weather seems to have slowed down vine development, but it looks like vines in the south are about to bloom. Bloom is a start of the critical time for cluster infections by downy mildew, powdery mildew, black rot, Botrytis, and ripe rot, because pathogens of these diseases can infect flower parts and develop symptoms later. What I recommend often is the use of protective materials to protect tissues for 4-6 weeks for V. vinifera varieties, and 3-4 weeks for V. labrusca varieties, which should translate into 3-4 sprays for V. vinifera , and 2-3 sprays for V. labrusca .  If you have hybrids, they are somewhere in between, so, 4-5 weeks to be protected.  As usual, please make sure to rotate mode of action (= FRAC) groups. Since we have not seen many rain events, I think powdery mildew will be the primary target for many of us. But please check your local weather to make sure, some downy mildew susceptible cultivars may still show downy mildew, especially, if there are many
Post a Comment
Read more

Downy mildew gallery

At Winchester, we had light rain events during the night of 6/12/09, but it was short events and the relative humidity was low (80% or so), thus it probably did not promote any infections. However, we are experiencing continuing favorable nights for downy mildew sporulation (average T>55F, high RH (80-100%)) for 10 days now. Yesterday, we conducted a formal disease assessment, and observed first incidence of powdery mildew for this season. We had plenty of infection events in last two months, so it was not surprising. At this point, it is a trace level of infection on untreated vines. Downy mildew was the major disease so far. We had up to 40% incidence on untreated vines. Next runner-up was black rot. It varies vine to vine, but some of vine had 10-15% incidence. Phomopsis was omnipresent as I expected from early May rain falls, but severity was low overall. We will examine diseases again in the near future, and I will update as the season goes. Here is downy mildew ga
Post a Comment
Read more