FOR SOD FARMS AND GRASS SEED PRODUCTION - COOL SEASON GRASSES - AT SEEDING (SINGLE APPLICATION)
Do not apply to crops used for food or feed purposes.
Aerial application is prohibited.
Non-target plants can be adversely affected by this product.
SOD FARMS AND GRASS SEED PRODUCTION
Application Rates of Tupersan Herbicide for Sod Farms and Grass Seed Production (Not For use on Sod Farms or Grass Seed Production in AZ)
Tupersan Herbicide is a selective preemergent herbicide for the control of certain annual weed grasses in turf grown for grass seed and sod production. Tupersan Herbicide may be applied at time of seeding without causing injury to germinating seeds of many common temperate region grasses. Tupersan Herbicide is highly effective for the control of smooth crabgrass, large crabgrass, downy brome, and foxtails.
Tupersan Herbicide may be used on established turf.
Tupersan Herbicide may be applied to the soil before the emergence of weeds and will control susceptible weed seedlings for an extended period. At seeding, preemergent applications of Tupersan Herbicide are made after planting but before the emergence of the grass seedlings.
Soil adsorption of siduron increases with higher levels of organic matter and/or higher clay contents. Soils with high organic matter levels require higher dosage rates than soils with low organic matter for equal performance. Also, soil textures with high clay content require higher dosage rates than soil textures with low clay content for equal performance.
Water is required to activate the herbicide following preemergent applications to the soil. Rainfall or irrigation (= 1/2 to 1 inch) must be provided within three (3) days to optimize the weed control.
NEWLY SEEDED AREAS: Apply this product to grass seedlings after the onset of tillering and after the grass seedlings have developed an adequate secondary root system. Usually, five to six leaves of the grass seedlings are visible when the first tiller appears.
ESTABLISHED GRASS STANDS: Apply this product in the spring and fall for grasses that have been planted for one or more seasons.