Disease	Chemical and Formulation	Rate per Acre	Remarks
Black rot	captan 50WP OR Ziram OR mancozeb 75DF OR Rally 40WSP OR Elite 45DF or Orius OR Abound OR Sovran OR Flint OR Pristine OR Inspire Super OR Revus Top OR Luna Experience	4 lb 4 lb 4 lb 3-5 oz 4 oz 10.0-15.5 fl oz 3.2-5.6 oz 2 oz 8.0-12.5 oz 16-20 oz 7 oz 5-8.6 oz	This is a very important spray. Do not delay more than 12-14 days after last pre-bloom spray. Note: Rally at the higher rates using 200 gal/A dilute sprays in combination with black rot predictor models provide excellent curative control.
Downy mildew	captan 50WP OR mancozeb 75DF OR Ridomil Gold Copper OR copper fungicides OR Gavel OR phosphorous acid OR Revus OR Presidio OR Forum OR Revus Top OR Ranman	4 lb 4 lb 1-2 lb see label 2.0-2.5 lb see label 8 oz 3-4 oz 6 oz 7 oz 2.1-2.75 oz	Do not apply mancozeb within 66 days of harvest. Copper fungicides should be mixed with hydrated lime. Copper fungicides may cause injury on certain varieties, esp. under cool, wet conditions.
Powdery mildew	Elite 45DF or Orius OR Rally 40WSP OR wettable sulfur (81.25% or 92%) OR Procure OR Pristine OR Quintec OR Endura OR Inspire Super OR Revus Top OR Mettle OR Vivando OR Luna Experience	4 oz 3-5 oz 4 lb 4-8 oz 8.0-12.5 oz 4 oz 4.5 oz 16-20 oz 7 oz 3-5 oz 10.3-15.4 oz 3.2-6.4 fl oz	Do not apply more than 24 oz of Nova per acre per season. Use at 14-21 day intervals as needed. Use higher rates and/or shorter intervals (see label) under severe disease pressure

Insects/Mites	Chemical and Formulation	Rate per Acre	Remarks
Grape berry moth (GBM)	Intrepid 2F OR Tourismo OR Entrust 2SC OR Delegate 25WG OR Altacor 35WDG OR Imidan 70WP OR Sevin 50W OR Avaunt 30DG	12-16 fl oz 10-14 fl oz 4-8 fl oz 3-5 oz 2-4.5 oz 2 lb 4 lb 5.0-6.0 oz	Where pest has been a problem in the past. Intrepid standard label recommends 4-8 fl oz; see supplemental Dow guidelines for higher rate.  REI for Imidan may render it impractical for most growers.  See Table for REI and PHI information.
Brown marmorated stink bug	Scorpion 35SL Actara 25WDG Assail 70WP Venom 70 Belay 50WDG malathion 5EC	2-5 fl oz (foliar), 9-10.5 fl oz (soil) 3.0 oz 1.1 oz 3 oz 6.0 fl oz 3.0 pt	When available, flowable (F) formulations pose less risk of phytotoxicity that emulsifiable (EC; oil-based) formulations. Avoid using captan and oil-based pesticides within 14 days of each other.
Spotted wing drosophila	Entrust 2SC Delegate 25WG malathion 8F Mustang Max 0.8EC PyGanic 1.4EC Surround WP Baythroid XL 1EC Tombstone 25EC Sevin 80WSP Sevin XLR Plus	4-8 fl oz 3-5 oz 2.5 pt 4.0 fl oz 64.0 fl oz 25-50 lb 2.4-3.2 fl oz 2.4-3.2 fl oz 1.5 lb 2.0 qt	SWD may be more important beginning at veraison, becoming greatest at 15 degrees Brix (risk increases approaching harvest, and while monitoring should begin at veraison, treatment may be delayed until later.  It is critical to rotate among insecticides of varying modes of action in order to delay the development of resistance.  Be watchful for flareups of secondary pests (mealybugs, spider mites) following applications of pyrethroids.  When available, flowable (F) formulations pose less risk of phytotoxicity than emulsifiable (EC) formulations.  For Surround, 25 lb in 50 gal/A preferred.  Monitor harvest parameters closely when using Surround.  PyGanic has a short residual life which limits is efficacy; Surround, Entrust and PyGanic are organic alternatives.
Grape rootworm	Sevin XLR PLUS	2 qt	Apply when beetles appear, usually in late June or early July. Second application may be necessary 10 days later.
Grape leafhopper	Admire Pro OR Nexter 75WP OR Assail 70WP OR Assail 30SG OR Actara 25WDG OR Imidan 70WP OR malathion 8F OR Sevin 50WP OR Sevin XLR PLUS OR Applaud 70DF OR Portal 5EC	1.0-1.4 fl oz 5.2-10.67 oz 1.1 oz 2.5 oz 1.5-3.5 oz 2 lb 2.5 pt 4 lb 2 qt 9-12 oz 1-2 pt	Apply if more than 5 leafhopper nymphs per leaf before Aug 1, and 10 per leaf thereafter.  REI for Imidan may render it impractical for most growers.    See Table for REI and PHI information.
Grape phylloxera	Assail WSP OR Assail 30SG OR Movento 2EC	1.1 oz 2.5 oz 6.0-8.0 oz	Repeat 10-12 days after first spray if foliar form was a problem the previous year. Check labels for notes on injury to specific varieties.  Assail may only be applied twice per season, at least 14 d apart.  Movento prebloom only in table grapes.
European red mite	Vendex 70WP OR Vendex 4L OR Nexter 75WP OR Acramite 50WS OR Agri-Mek 0.15EC OR JMS Stylet Oil OR Envidor 2SC OR Zeal WP OR Portal 5EC OR Saf-T-Side 80 OR Nealta	2 lb 1 qt 4.4-5.2 oz 0.75-1 lb 8-16 fl oz 1-2 gal 16-18 fl oz 2-3 oz 1-2 pts 1.0-2.0% solution 13.7 fl oz	Only if mites exceed 10/leaf (20/leaf on labrusca types), and more than minor bronzing occurs. Rotate acaricides. Vendex is available in water-soluble bags (1-2.5 bags per A) and may not be applied within 28 days before harvest. Acramite may only be applied once per year.  Use 8 oz of Agri-Mek for low populations, 16 oz for severe.  Stylet Oil should be applied at 1-2 gal/A, every 10-14 days against mite eggs.    Onager works only against spider mite eggs; observe 28d PHI.  Portal for nonbearing vines only.
Japanese beetle, June beetle, wasps	Sevin 50WP OR Sevin XLR PLUS OR Surround 95WP OR Imidan 70WP OR Assail 70WP OR Assail 30SG OR Avaunt 30DG	4 lb 2 qt 12.5-50 lb 2 lb 1.1 oz 2.5 oz 3.5-6.0 oz	Apply when beetles are common, especially on young vines. Bearing vines are most vulnerable to Japanese beetle feeding after veraison. REI for Imidan may render it impractical for most growers.  See Table for REI and PHI information.  For yellowjacket management, trapping newly emerged overwintered queens with baited traps may help reduce population later in the season.  Control of foraging workers in the preharvest period will be limited by short residual activity of available materials, and action only against current workers.
Mealybugs	Applaud 70DF OR Venom 20SG OR Assail 70WP OR Assail 30SG OR Admire Pro OR Movento 2SC OR Belay 50WDG	9-12 oz 0.44-0.66 lb 1.1 oz 2.5 oz 1.0-1.4 floz 6.0-8.0 fl oz 6 fl oz	If a delayed dormant spray does not provide adequate control, a summer application may be made.  Baythroid targets only crawlers.
Drosophila flies (vinegar flies)	malathion 5EC	3.0 pt	Apply if Drosophila are abundant. Do not apply malathion within 3 days of harvest. When available, flowable (F) formulations pose less risk of phytotoxicity that emulsifiable (EC; oil-based) formulations. Avoid using captan and oil-based pesticides within 14 days of each other.

Web Site Author: Douglas G. Pfeiffer