3-5 Inch to and First Post-bloom Spray Growth Stage Product (rate/A) FRAC Code Relative cost (per acre/application) Target Diseases 3-5 inch shoot (or 7-10 days after the last spray) Same fungicides as one inch PHOM, PM 10-12 inch (or 7-10 days after the last spray) Same fungicides as one inch BR, PM, DM Immediate to early bloom (or 7-10 days after the last spray) Same fungicides as one inch shoot OR USED Revus Top 2.08 F (7 oz)* 3+40 $ BR, PM, DM BR, PM, DM * Revus Top used alone provides excellent control against black rot, downy mildew and powdery mildew. Revus Top should not be applied to Concord or non-vinifera hybrids as leaf burning may occur. Consult the label for other restrictions. First post-bloom spray (no longer than 10 days after the last spray) Same fungicides as immediate pre-bloom to early bloom PLUS* Ridomil Gold MZ (2.5 lb)** or Ridomil Gold Copper (2 lb)*** or Revus (8 fl oz) or Presidio (3-4 fl oz) or Ranman (2.1-2.75 fl oz) or Forum (6 oz) or Zampro (11-14 fl oz) 4 + M 4 + M1 40 43 21 40 45 + 40 $$$$ $$$ $$$ $$$ $$ $ $$$ BR, PM, DM DM * If conditions are highly conducive for downy mildew infections during this period (temperatures above 50 F, rainy and high humidity at night) the addition of a product specific to DM should be added to the program. It is very important to remember that these materials will need to be tank mixed with other fungicides because they will not provide adequate control of powdery mildew or black rot.
Second Post-bloom Spray Growth Stage Product (rate/A) FRAC Code Relative cost (per acre/application) Target Diseases Second post-bloom spray (no longer than 10 days after the last spray) Same fungicides as immediate pre-bloom to early bloom PLUS* Ridomil Gold MZ (2.5 lb)** or Ridomil Gold Copper (2 lb)** or Revus (8 fl oz) or Presidio (3-4 fl oz) or Ranman (2.1-2.75 fl oz) or Forum (6 oz) or Zampro (11-14 fl oz) 4 + M 4 + M1 40 43 21 40 45 + 40 $$$$ $$$ $$$ $$$ $$ $ $$$ BR, PM, DM DM * The second post-bloom spray is near the end of the critical period (immediate pre-bloom through 3 to 4 weeks after bloom) for controlling fruit infection by black rot, powdery and downy mildew. However, cluster stems (rachis) and leaves will remain susceptible to powdery and downy mildew throughout the growing season; therefore, a good fungicide program needs to be maintained throughout the season. **If conditions are highly conducive for downy mildew development (rainy and cool to warm temeratures (64 to 76 degrees F )), Ridomil Gold MZ or Ridomil Gold Copper is recommended.
Fourth Post-bloom Spray Growth Stage Product (rate/A) FRAC Code Relative cost (per acre/application) Target Diseases Fourth spray (10-14 days after the last spray) Captan 50 W (3-4 lb)* or Phosphorous acid or Revus (8 fl oz) or Presidio (3-4 fl oz) or Ranman (2.1-2.75 fl oz) or Forum (6 oz) or Zampro (11-14 fl oz) PLUS Elite 45 DF (4 oz) or Rally (4 oz) or Inspire Super (16-20 fl oz) or Mettle (3-5 fl oz) or Torino 0.85F (3.4 fl oz) or Endura 70 WG (4.5 oz) or Vivando 2.5 F (10.3-15.4 fl oz) or Sulfur* or Quintec 2.08F (3-4 fl oz) or Potassium salts OR USED ALONE Fixed copper*and ** or Top 2.08 F (7 oz) M 33 40 43 21 40 45 + 40 3 3 3+9 3 U6 7 U8 M 13 - M 3+40 $ $ $$$ $$$ $$ $ $$$ $ $ $$$$ $ $$ $$ $$$$ $ $ - $ $ DM PM DM, PM * Do not apply Captan, sulfur or copper fungicides within 30 days of harvest or the fermentation process may be adversely affected. ** If dry weather persists and the risk of downy mildew is low, fixed copper will provide good control of both downy and powdery mildew. Fifth Post-bloom Spray