Esteron 638

Dow AgroSciences
Registered until
Registration number

For selective control of many broad leaf weeds in certain crops, fallow cropland, forests, grass pastures, rangeland, Conservation Reserve Program (CRP) acres,
ornamentals, turf, and non-cropland areas.

General Information
Esteron 638 herbicide is intended for selective control of many broadleaf weeds in certain crops (including cereal grains, corn, grain sorghum, and soybeans), fallow cropland, forests, grass pastures, rangeland, Conservation Reserve Program acres, ornamental turf (including turf grown for sad or seed), and non-cropland.
Esteron 638 is a special formulation, containing acid and butoxyethylester forms of 2,4-D. This product is more effective than amine forms of 2,4-0 in the control or suppression of hard-to-kill weeds that normally require higher rates or repeat applications of 2,4-D for satisfactory results. Esteron 638 should be applied when daytime temperatures are less than 80 to 85 degrees. Excessively rapid foliar burn and decreased effectiveness may occur if applied at highe-;' temperatures. Application at higher temperatures also increases the possibility of crop injury. Apply Esteron 638 as a water or oil-water spray during warm weather when weeds or woody plants are actively growing. Application under drought conditions will often give poor results. Use low spray pressure to minimize drift. Generally, the lower dosages recommended.on this label will be satisfactory for young, succulent growth of susceptible weed species. For less susceptible species and under
conditions where control is more difficult, use higher recommended rates. Deep-rooted perennial weeds such as Canada thistle and field bindweed and many woody plants usually require repeated applications for satisfactory control. Consult your State Agricultural Experiment stations or Extension Service Weed SpeCialists for recommendations from this label that best fit local conditions.

Application Instructions
Apply with calibrated air or ground equipment using sufficient spray volume to provide adequate coverage of target weeds or as otherwise directed in specific use directions. For broadcast application, use a spray volume of 2 or more gallons per acre by air and 10 or more gallons per acre for ground equipment. Where states have regulations that specify minimum spray volumes, they should be observed. In general, spray volume should be incr.eased as crop canopy, height and weed density increase in order to obtain adequate spray coverage. Do not apply less than 2 gallons total spray volume per acre.

Spot Treatments
To prevent misapplication, spot treatments should be applied with. a calibrated boom or with hand sprayers using a fixed spray volume per 1,000 sq ft as indicated below. Hand-Held Sprayers: Hand-held sprayers may be used for spot applications of Esteron 638 in labeled crops. Care should be taken to apply the spray uniformly and at a rate equivalent to a broadcast application. Application rates in the table are based on a treatment area of 1,000 sq ft. Mix the amount of
Esteron 638 (fl oz or ml) corresponding to the desired broadcast rate in one (1) or more gallons of spray. To calculate the amount of Esteron638 required for larger areas, multiply the table value (fl oz or ml) by the number of "thousands" of sq ft of area to be treated (For example, 6500 sq ft equals 6.5 "thousands").
An area of 1000 sq ft is approximately 10.5 X 10.5 yards (strides) in size. To calculate the amount of Esteron 638 required for a broadcast rate different than those listed, add the appropriate rates from the table, for example, if a spot treatment requires 1 1/3 pt per acre, add the table values for 1/3 and 1 per acre, respectively.

Registered for cultures
Winter wheat
Spring wheat
Spring barley
Winter barley
Spring oats
Winter oats
Winter rye
Spring rye
Sweet corn