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Simizine & Atrazine

Discussion in 'Pesticide & Herbicide Application' started by VARMIT COMMISSION, Oct 3, 2007.


    VARMIT COMMISSION LawnSite Senior Member
    Messages: 547

    Whats The Difference Between Atrazine And Simizine 4l??? I Know Simazine Is Ok For Residential Lawns, And It Is A Cool Wheater Pre-emergant But Thats About All I Know. Oklahoma Bermuda Grass
  2. ThreeWide

    ThreeWide LawnSite Bronze Member
    Messages: 1,116

    Atrazine is restricted use pesticide. That is one major difference.

    Specific to Bermudagrass, Atrazine is labeled for use only when it is completely dormant. Simazine is less harsh on the Bermuda, but it does tend to zap the color out when spraying too early in the Fall.

    VARMIT COMMISSION LawnSite Senior Member
    Messages: 547

    Ok, Thanks-- I Didnt Know It Was Restricted.
  4. cecropia11

    cecropia11 LawnSite Member
    Messages: 103

    can simazine be used on fescue grass.
  5. WestGaPineStraw

    WestGaPineStraw LawnSite Senior Member
    Messages: 765

    Warm season grasses only.
    Posted via Mobile Device
  6. nik

    nik LawnSite Member
    Messages: 185

    Lots of groundwater contamination issues with atrazine, less so with simizine
  7. RAlmaroad

    RAlmaroad LawnSite Silver Member
    from SC
    Messages: 2,253

    Simazine has far less lateral soil movement than Atrazine as well as being temperature restrictive.

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