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Soybean Weed Control - Pre
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Posted 9/16/2020 15:19 (#8499059 - in reply to #8498941)
Subject: RE: Soybean Weed Control - Pre

Windom, MN
The only advantage to not using a pre-emerge is cost savings. Some might say there is some crop injury with certain pre-emerge herbicides as well.

I put down a mix of sonic and metribuzin pretty much right behind the planter. Weeds are easier to kill when they are small, so the pre helps keep the weeds from growing for a few weeks. About a month later I can come back with Liberty, something for residual like a dual, and a volunteer corn killer. With 15" rows, it's only a week or two to canopy, then it's just spot spraying after that. My chemical program isn't cheap, I know that. But we had a failure a few years ago with some roundup beans where waterhemp took off. Easily knocked 20-25 bushels off the yield in the very infested areas, so I don't tolerate weeds, and I don't have a lot of time to walk my fields and pull them either. Seems even if you pull the large waterhemp they will still re-root somehow.

I've never tried the extend beans, but do have enlist this year. I didn't spray enlist though, seems the program I have works pretty well.
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