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boscalid / pyraclostrobin (Pristine)

Do not make consecutive applications with another FRAC 11 or FRAC 7 fungicide.

In table grapes, REI is 5 days for activities related to cane typing, girdling, or turning.  REI of 5 days is also recommended if doing hand labor for shoot thinning or fruit-zone leaf removal in wine grapes.

DO NOT use on Concord or Noiret (NY73.0136.17) due to foliar injury. Possible foliar injury could occur to Worden, Fredonia, Niagara, Steuben, Rougeon or related grape varieties.

Effect on Beneficials: Unknown
Material Type: Fungicide
Signal Word: Caution
Formulation: Spray Powder
EPA Number: 7969-199

Usage for boscalid / pyraclostrobin on Grapes

Bloom to Pea Size Fruit

Target Rate of application REI PHI MOA Eff. Notes
Botrytis Bunch Rot 18.5-23.0 fl oz 12 14 7 / 11 Good Start applications before disease symptoms are visible. Do not make sequential applications of a fungicide containing a FRAC 11 product. Alternate to a fungicide with a different mode of action (FRAC group). Do not use on Concord. Resistance management recommendations: Do not use more than twice a year, and never sequentially for the target disease. Key phenological stages for management are early bloom, bunch closure, and veraison to harvest.
Powdery Mildew 8.0-12.5 oz 12 14 7 / 11 Good

Pea Size Fruit to Véraison

Target Rate of application REI PHI MOA Eff. Notes
Botrytis Bunch Rot 18.5-23.0 fl oz 12 14 7 / 11 Good Start applications before disease symptoms are visible. Do not make sequential applications of a fungicide containing a FRAC 11 product. Alternate to a fungicide with a different mode of action (FRAC group). Do not use on Concord. Resistance management recommendations: Do not use more than twice a year, and never sequentially for the target disease. Key phenological stages for management are early bloom, bunch closure, and veraison to harvest.

Véraison to Preharvest

Target Rate of application REI PHI MOA Eff. Notes
Botrytis Bunch Rot 18.5-23.0 fl oz 12 14 7 / 11 Good Start applications before disease symptoms are visible. Do not make sequential applications of a fungicide containing a FRAC 11 product. Alternate to a fungicide with a different mode of action (FRAC group). Do not use on Concord. Resistance management recommendations: Do not use more than twice a year, and never sequentially for the target disease. Key phenological stages for management are early bloom, bunch closure, and veraison to harvest.