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I find 'kills weeds in minutes' to be a red flag. The weeds I typically _need_ to kill are deep rooted, perannual weeds that do not die easily. Roundup (glysophate) takes a couple weeks to kill off Canadian thistles, but - it actually kills them, down to the last root. Something that pretends to kill a thistle in a few minutes is just burning off the top green plant, but not doing anything to the root mass. So it will be right back in a few weeks, good as ever. I run into this spraying grass in conventional beans as well. Flexstar will kill off many broadleaves, and it will 'flash' the grasses. It turns them brown - for a short time. Any other grass killer applied at this time will not hurt the grasses now. But the Flexstar doesn't really kill the grasses - just knocks them back a bit. Then the grasses are all back again in a couple of weeks. I chuckle when I see those consumer squirt bottles of Roundup - now kills weeds in hours. Yikes, why????? Glysophate does well to travel throught the plant & kills it from the root up. Why add a chemical to it that weakens that effect, just to wilt the weeds some in hours..... I know nothing of the chemical you are asking about, but call me a skeptic just based on the wording.... --->Paul
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