Home Fruit Gardens: Table 6.6. Pesticide Recommendations for Grapes

The sprays listed below will not provide adequate control of black rot.
Home Fruit Gardens: Table 6.6. Pesticide Recommendations for Grapes - Articles


Where black rot is a problem, apply a fungicide every 14 days after the "New Shoot" spray up to and including the "Before Ripening" spray. During long rainy periods, shorten the interval to 7 to 10 days between sprays. Spray in the rain, if necessary, to maintain the schedule of applications. Always consult the label before making pesticide applications. Labels vary greatly among commercial products of the same material. It is important to refer to the label for the best timing and application rates when applying pesticides. Also read the text for information on cultural practices to minimize the application of pesticides. Due to a wide array of various products containing the same active ingredient, for insecticide recommendations, when appropriate, the active ingredient is listed instead of the name of formulated product.

Follow all instructions and application rates listed on pesticide labels.

Time to SpraySuggested MaterialsPests to Be Controlled
New Shoot - when new shoot growth averages 4 inchesCaptan or MancozebPhomopsis, black rot
Before Bloom - just before blossoms open

Captan + Mycobutanil or Mancozeb + Mycobutanil for diseases.

Carbaryl (rose chafer) or Imidcloprid (leafhopper)

Black rot, downy mildew, rose chafer, leafhopper
Post Bloom - immediately after Bloom

Mancozeb + Mycobutanil for diseases.

Bacillus thuringiensis (berry moth), or Imidaclprid (leafhopper)

Black rot, powdery and downy mildew, phomopsis, botrytis, grape berry moth, leafhopper
First Cover - apply 10-14 days after Post-BloomCaptan + Sulfur OR Mancozeb + Sulfur for diseases.
Imidcloprid or Carbaryl (Japanese beetle)
Black rot, downy and powdery mildew, botrytis, Japanese beetle
Second Cover - apply 2 weeks after First CoverCaptan + SulfurBlack rot, downy and powdery mildew, fruit rots
Third Cover - late July or early AugustCaptan + SulfurFruit rots, downy and powdery mildew
Before ripening - 10 days before pickingCaptan + SulfurFruit rots, downy and powdery mildew