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Table 6.6. Pesticide Recommendations for Grapes

The sprays listed below will not provide adequate control of black rot.

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 Spray Suggested Materials Pests to Be Controlled
New Shoot - when new shoot growth averages 4 inches
Captan plus Mycobutanil or Mancozeb + Mycobutanil
Phomopsis, black rot
Before Bloom - just before blossoms open
Captan plus Mycobutanil or Mancozeb + Mycobutanil or Carbaryl or Imidcloprid
Black rot, downy mildew, rose chafer, leafhopper
Post Bloom - immediately after Bllom
Mancozeb + Mycobutanil or Bacillus thuringiensis, or Imidaclprid, or Azadirachtin
Black rot, powdery and downy mildew, botrytis rot, berry moth, leafhopper
First Cover - apply 10 days after Post-Bloom
Captan + Sulfur
Same as Post-Bloom
Black rot, downy and powdery mildew, botrytis rot
Japanese beetle
Second Cover - apply 3 wees after First Cover
Captan + Sulfur Black rot, downy and powdery mildew
Fruit rots
Third Cover - late July or early August
Captan + Sulfur Fruit rots, powdery mildew
Before ripening - 10 days before picking
Captan + Sulfur
Fruit rots, powdery mildew

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Table 6.6. Pesticide Recommendations for Grapes

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