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United States | I've never had Callisto injury over 100's of thousand of acres when sprayed at right rate (3 oz POST). You need a sublethal rate of atrazine with the Callisto for it work the best. You have to use it at too high of a rate on field corn to cause injury. Overlaps in the field will show some bleaching but no loss.
I had a few cases 5 years ago blamed on Callisto that appeared to be glyphosate contamination. I did send samples & confirmed it from 2 of the cases.
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