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Lancaster, OH | Simazine is for grass. Atrazine is for broadleaves. Both are root absorbed so they need to be at or below germinating seed level to control a weed. If you are no-tilling, a combination of acetachlor and simazine is a very solid grass control approach. In this neighborhood, we would use 2# ai acetachlor, 1# ai simazine and 1-1.5 atrazine.
The atrazine rate would depend on the plan for post weed control. If we plan to use a post for some tough broadleaves, then we go with the lower residual rate. If we feel we will control them pre, then the higher rate. | |
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Simazine vs atrazine
