Waterhemp

Discussion in 'Herbicide Info' started by BobinCt, Jul 30, 2018.

  1. BobinCt

    BobinCt New Member

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    Does anyone have problems with waterhemp? If so, if there a pre-emergent herbicide you can use prior to planting brassica that don’t have a residual? Any help would be great
     
  2. willy

    willy Active Member

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    Preemergent success is based on their residual impact. If you can wait two weeks, spray 24d and then plant 2 weeks later.This late in the season I don't think there is too much waterhemp germinating.
     
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  3. BobinCt

    BobinCt New Member

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    I think it’s carpetweed after a closer look. Thx for the reply Willy. Another question I have is Gly vs 2-4D. I know 2-4D is broadleaf only. My question is will 2-4D give a longer kill time of broadleafs than Gly before the weeds grows back?
     
  4. willy

    willy Active Member

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    24d has a bit of a residual effect, gly has none.
     
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  5. bigbluetruck

    bigbluetruck Active Member

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    2-4D doesnt have much residual this time of year, like a week maybe a shade more.
     
  6. BobinCt

    BobinCt New Member

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    The weeds I’m targeting are carpetweed for sure. The other weed is either bouncing bet, soapwort or white campion. I’ve always sprayed Gly like 5-6 days before planting my plots. My question is, is there a stronger herbicide than Gly that I can spray now that will hold back these weeds for a longer period of time from coming back so my plants will have a chance to canopy and shade out these weeds. This carpetweed is insane. I realize if there is a herbicide and I’m sure there is, that I will prob have to wait a week or so before planting. Any help would be greatly appreciated.
     
  7. bigbluetruck

    bigbluetruck Active Member

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    Do you have a local COOP around that sprays for farmers? They would know what works best in your area.

    From my research, Carpetweed is pretty easy, a strong dose of 2-4D will do the job. If you wait 2 weeks depending on the rains youll be fine to plant.

    Soapweed is another animal. After finding this: https://www.colorado.gov/pacific/agconservation/bouncingbet it looks to be a tough thing to kill, the only chemical I have experience with on the list is Tordon, BUT if you use Tordon, you wont be able to grow beans or most other broadleaves for many, many years. So I would see about the other ones, youll need to check the life of the chemical, and the plantback restrictions for whatever youre planting
     
  8. BobinCt

    BobinCt New Member

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    Big: it’s Soapwort or white campion, not soapweed. A guy on another site told me it was white campion. So I think it’s carpetweed and white campion I’m dealing with. I called my local co-op twice and they still haven’t got back to me. They are suppose to be working on it but I think they don’t know either. Sounds like I’ll do the 2-4D and Gly combo and pray for good rains. I’ve never had problems prior to this farm. My brassicas always came in nice.
     
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  9. bigbluetruck

    bigbluetruck Active Member

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    Ya, a mix of 4oz/Gal of 2-4D and 4oz/Gal of Gly and a 10gal/acre rate of water should do a heck of a number on them.
     

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