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HCS Weed Database

College of Food, Agricultural, and Environmental Sciences

CFAES

atrazine

Active ingredients: 
atrazine
Site of action groups: 
5
Manufacturer: 
many
EPA reg number: 
many
Restricted use product or combination: 
Yes
Rate (per A): 

Maximum soil-applied rate on soils not highly erodible is 2 pounds of active ingredient per acre. Maximum rate on highly erodible soils is 2 pounds active ingredient on fields with at least 30% crop residue, and 1.6 pounds active ingredient on fields with less than 30% crop residue. Soil applications may be followed with a postemergence ap- plication of atrazine, but total of all treatments cannot exceed 2.5 pounds active ingredient per acre per year.

Application timing: 

Preplant, preemergence or postemergence up to 12-inch corn

Rotation intervals: 
Time to wait to plant following application (months; NR = no restrictions): corn - NR; wheat - 14; oats - 21; alfalfa - 21; clover - 21; soybeans - 10; tomatoes - 21; popcorn - NR; sweet corn - NR.