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SC Wisconsin | Simazine will not touch quack grass. Atrazine will, but you need rates that are not consistent with typical use rates available today. Nicosulfuron is a good choice for quack but will miss smooth & large crabgrass. In my experience, simazine and atrazine for grass control is mediocre when compared to acetachlor. That said, simizine's lower solubility gives it some advantages with specific weeds by staying in the germination zone longer than ATZ. I would suggest bumping your acetachlor rates or shifting the timing. Given your concerns with using metribuzin next year, both of the triazines will increase injury risk with increasing rates. Make sure what you are running post covers the weed spectrum you have growing at the time of treatment. Many grasses will be tough to kill with Laudis/Atz if they are too big. | |
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Simazine vs atrazine
