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Soil temperature

Discussion in 'Pesticide & Herbicide Application' started by LawnsharkMB, Jan 17, 2013.

  1. LawnsharkMB

    LawnsharkMB LawnSite Senior Member
    Messages: 650

    Here in Myrtle Beach we have had temps in the mid 70's the past two weeks. Soil temps are above 55 degrees. In fact I just stuck an instant read thermometer in the ground, came back 20 mins later and it read 68 degrees. What do you do about preemergent in this situation? Should I have put it out the first week of January?!?!
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  2. turfmd101

    turfmd101 LawnSite Bronze Member
    Messages: 1,375

    It would be nice to have a chart showing different weed seeds and next to each one would be,,,soil temp of germ and the length of time required at that temp for actual germination. Unless its seconds. Then it wouldn't matter. But I bet its not seconds and it does matter and hell, it would also answer this question.
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  3. TurfWerks

    TurfWerks LawnSite Senior Member
    Messages: 322

    That's a strange one for me. Im going to get soil temp here tomorrow and see what it is.. usually our January February is the coldest 2 months..
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  4. Smallaxe

    Smallaxe LawnSite Fanatic
    Messages: 10,082

    The sun makes the difference in daytime soil temps... the seeds will respond to nite time soil temps...
  5. White Gardens

    White Gardens LawnSite Fanatic
    Messages: 6,776

    If you feel you need to do a pre-em then just consider using one with a split application recommendation.

    Or, if you can, do two different products with a different AI so your not over-dosing the lawns with one AI in one season.

  6. LawnsharkMB

    LawnsharkMB LawnSite Senior Member
    Messages: 650

    What did you find out?
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