Pesticide Application Rates

NOTE: The rates provided here are intended for estimation purposes only. It is ESSENTIAL that you refer to the product labeling for specific directions of application. The amount of pesticide to apply is dependant upon many variables, ie disease pressure, weather conditions, time-to-harvest, etc. For example, the labeled rate for Vangard is 10 oz/ac when used alone - but when used in a tank mix with another Botrytis fungicide, the rate is reduced to 5 oz/ac. READ (and THINK) BEFORE YOU SPRAY. FOR HELP INTERPRETING PRODUCT LABEL APPLICATION RATES FOR SMALL VINEYARDS PLEASE READ OUR APPLICATION RATES FOR SMALL VINEYARDS BELOW FUNGICIDES PRODUCT NAME RATE Abound 11 - 15.4 oz/ac Bayleton 2 - 6 oz/ac Captan 2 - 4 lbs/ac Champ 1-1/3 - 2-2/3 lb/ac Dithane 1.5 - 4 lbs/ac Elevate 1 lb/ac Elite 4 oz/ac Flint 1-4 oz/ac Nova 3 to 5 oz/ac Penncozeb 2 to 4 lbs/ac Phostrol 2.5 to 5 pt/ac Ridomil 2.5 lbs/ac Rubigan 4 to 6 oz/ac Serenade 4 to 8 qts/ac Sulfur 3 to 6 lbs/ac Tenncop 3 to 4 pt/ac Vangard 10 oz/ac Ziram 3 to 4 lbs/ac   INSECTICIDES PRODUCT NAME RATE Carbaryl (Liquid Sevin) 1qt / ac Carbaryl 80WP (Sevin) 1.5 to 2.5 lbs/ac Imidan 70WP 2 lbs/ac Malathon 3 pts/ac HERBICIDES PRODUCT NAME RATE Diuron (Karmax) 3 to 6 lbs/ac Goal 2XL 0.5 gl/ac Glyphomax Plus 1 gl/ac or 2 gl/100 gl Simazine 1 gl/ac Solicam 2.5 lbs/ac Surflan 2 to 4 qts/ac SURFACTANTS & SPREADER/STICKERS PRODUCT NAME RATE Activate 1-2 pts/100gl(fungicide) " 2-4 pts/100gl(herbicide) Biosurf 3 to 8 oz/100 gal Latron B-1956 1 to 2 oz/100 gal Pesticide Application Rates for Small Vineyards Small vineyards - an acre or less - are typically measured in number of rows, making it difficult to interpret the product label application rates, which are given in terms of acres. The following formula will serve as a close approximation of the manufacturer's suggested rates. It is predicated on the fact that these suggested rates assume that the fungicide will be mixed with a minimum of 50 gallons of water per acre (usually referred to as a 'low volume' or 'concentrate' solution) and applied with a blast or mist sprayer. Small scale users, on the other hand, apply these materials to the drip level - usually two to three times the amount of water used in concentrate solutions -- with a hand or backpack sprayer in quantities termed 'high volume' or 'dilute' solutions. To make the conversion, determine what percent of 50 gallons your vineyard will require (how many backpack-fulls for drip-level coverage), apply this percent to the recommended per-acre rate for the fungicide being used, and adjust for the additional water needed for dilute sprays. Example: Suppose the recommended rate is 50 oz/acre. Using the minimum water rate, this translates into 50 oz/50 gal of water, or 1 oz/gal. Then dilute this quantity by doubling the amount of water (or cutting the pesticide quantity by 50 percent) while filling the backpack. A standard 4-gal backpack would then contain 2 oz of pesticide material. If your vineyard requires 8 gallons for sufficient coverage, then the total amount of fungicide material needed will be 4 oz.