Disease	Chemical and Formulation	Rate per Acre	Remarks
Black rot Phomopsis cane and leaf spot Downy mildew	captan 50WP or equivalent OR mancozeb 80WP or DF OR Ziram	2.0-4.0 lb 2.0-4.0 lb 2.0-4.0 lb	Important to apply 2 applications starting at 1/2 inch to 1 inch shoot length where black rot or Phomopsis has been a problem. Add a surfactant to improve wetting of pubescent young growth.  Captan has only fair efficacy against black rot. At high disease pressure, it should be tank-mixed with a more efficaceous material.  Do not make captan applications within two weeks of an oil spray.
Powdery mildew	wettable sulfur (81.25% or 92%)	2.0-5.0 lb	Where powdery mildew has been a severe problem. Do not make sulfur applications within two weeks of an oil spray. Do not use sulfur prior to or during periods of excessively high temperatures. Do not apply sulfur to Concord, red-fruited French-American hybrids, and other sulfur sensitive varieties.
Anthracnose	copper fungicides with lime	see label	Apply at 4-10 inch shoot length. Repeat at 10-14 day intervals. Only necessary where anthracnose has been a problem.

 
 

Insects/Mites	Chemical and Formulation	Rate per Acre	Remarks
Grape cane girdler	Imidan 70WP OR Danitol 2.4EC OR Baythroid XL 1EC	2 lb 10 fl oz 2.4-3.2 fl oz	When shoots are 4-6 inches long, where infesting more than 10% of shoots. Mainly a problem when training young vines.  The REI for Imidan may render it impractical for most growers.  See Table for REI and PHI information.
Redbanded leafroller (RBLR)	Altacor 35WDG OR Entrust 2SC OR Delegate OR Intrepid 2F OR Imidan 70WP OR Sevin XLR OR Bacillus thuringiensis (Bt)	3.0-4.5 oz 4-8 fl oz 3-5 oz 12.0-16.0 fl oz 2 lb 2 qt rates very	Where pest has been a problem in the past.  The REI for Imidan may render it impractical for most growers.  See Table for REI and PHI information.
Climbing cutworms	Bacillus thuringiensis (Bt) OR Sevin XLR OR Danitol 2.4EC OR Baythroid XL 1EC OR Brigade 2EC OR Intrepid 2F OR Tourismo OR Entrust 2SC OR Altacor 35WDG OR Belt 4SC OR Sniper 2	Rates vary 2.0 qt 15 fl oz 2.4-3.2 fl oz 3.2-6.4 fl oz 12.0-16.0 fl oz 10-14 fl oz 8.0 fl oz 4-8 fl oz 3.0-4.5 oz 3.0-4.0 fl oz 3.2-6.4 fl oz	Spray in evening if possible. Various preparations of Bt available. Check label for rates.  The use of Delegate, Baythroid, Brigade and Sniper 2 should be delayed until fourth cover in blocks where spotted wing drosophila must be controlled, in order to observe maximum applications per season.
Periodical cicada	Danitol 2.4EC OR Lannate SP	10 fl oz 0.5-1  lb	Check cicada map to determine expected emergence.

Web Site Author: Douglas G. Pfeiffer