Spraying in Southern New England

[TurkeyHollow]

We're entering year 2 of our vineyard in northern RI. We plan to install drip irrigation before the heat of Summer hits. We are looking for advice on spraying materials, quantities and schedules. Throughout the first year, we sprayed with Carbaryl 4L for Japanese beetles. It was a very dry summer so we had no issue with visible mildew or fungus. The varieties are Baco Noir, Chardonel and either Chelois or Lemberger (to be planted this year).

 

[VinesnBines]

I'm in Virginia but have Baco, Chelois, and Chardonel (along with others). I would suggest Mancozeb and sulfur every two weeks until you are 66 days from harvest (Mancozeb has a 66 day prior to harvest interval) then I would switch over to Captan and Immunox until you are two weeks from harvest. Immunox has a 14 prior to harvest interval. Mix in the Carbaryl for Japanese Beetles when needed and keep that in two week cycle. (Chelois might be slightly sensitve to sulfur so watch those vines).

Since this is your second year, you may not plan on fruit. If not I would just stick with the Mancozeb and sulfur throughout.

I love growing Chelois and I'm going into a third year with the vines. Chardonel has been hard for me to get to do well... I've lost a few vines. I'm hoping it will do well when established. Baco did great but last year was the first year with those vines.

 

[TurkeyHollow]

I'm in Virginia but have Baco, Chelois, and Chardonel (along with others). I would suggest Mancozeb and sulfur every two weeks until you are 66 days from harvest (Mancozeb has a 66 day prior to harvest interval) then I would switch over to Captan and Immunox until you are two weeks from harvest. Immunox has a 14 prior to harvest interval. Mix in the Carbaryl for Japanese Beetles when needed and keep that in two week cycle. (Chelois might be slightly sensitve to sulfur so watch those vines).

Since this is your second year, you may not plan on fruit. If not I would just stick with the Mancozeb and sulfur throughout.

I love growing Chelois and I'm going into a third year with the vines. Chardonel has been hard for me to get to do well... I've lost a few vines. I'm hoping it will do well when established. Baco did great but last year was the first year with those vines.

When do you start spraying... after bud break or do you wait for foliage to get established?

 

[VinesnBines]

I waited until I had some foliage which was tricky in 2020. We had bud break about 3 times due to frost and freezes. I plan to start at bud break this year.

This is a pretty simple chart. There are tons of other publications but this is about as simple as it gets.

 

[TurkeyHollow]

Great info! With the amount of vineyards (home, farm & commercial) around me, I would think I could find that kind of information closer to my location. It's usually geared toward a warmer climate or cooler climate. Thanks again - at least I now have some new spray materials to look up and read about!

 

[VinesnBines]

Look at the Virginia Tech Viticulture Research pages here: Viticulture Extension Resources

Also check out information from Steve Casscles on grapes of the Hudson Valley and other cool climates. He is working on another book on New England grape growing. I'm not sure how soon he will publish that one. He gives a lot of lectures and talks and is a super nice guy.

https://www.amazon.com/Grapes-Hudso...ild=1&keywords=casscles&qid=1610457497&sr=8-1

 

[TurkeyHollow]

It looks like you have it pretty much under control but here's a link that had quite a bit of info that may help someone:
https://ag.umass.edu/fruit/ne-small.../insects/table-57-grape-pest-management-table

 

[VinesnBines]

Great resource! Thanks!