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Glypho at Low Temp Post

Discussion in 'Pesticide & Herbicide Application' started by wooley99, Jan 18, 2008.

  1. wooley99

    wooley99 LawnSite Senior Member
    Messages: 269

    Not long ago there was a thread concerning using Glyphosate at lower temps. I'll be dogged if I can find it now though. Can someone with better memory, search skills or just smarts help me out please?

    I'm trying to decide if it's worthwhile to spray beds next week with temps in the mid-40s to 50s.

    Thank you.
  2. Rayholio

    Rayholio LawnSite Bronze Member
    Messages: 1,461

    it'll work.. just slow.
  3. rcreech

    rcreech Sponsor
    Male, from OHIO
    Messages: 6,153

    Yea, just want to make sure the plants are actively (or slowly) growing!
  4. Rayholio

    Rayholio LawnSite Bronze Member
    Messages: 1,461

    If they're green, you're good to go..

    Actually, I had partial kill on dormant bermuda last year... so maybe even if they're not green! Doh!
  5. RigglePLC

    RigglePLC LawnSite Fanatic
    Messages: 13,556

    Actually, Dr Fred Yelverton gave a talk at a January Michigan turf meeting. He found poor control using Roundup on tall fescue at temperatures below 50--otherwise control was good. Look at the excellent website www. turffiles.ncsu.edu. Look under extension, "Presentations" to view all the slides.
    Here--I think--is the link to the slide of experimental results comparing temperature and Roundup effectiveness.
  6. Armadillolawncare

    Armadillolawncare LawnSite Senior Member
    Messages: 570

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