Issue mixing Sedgehammer & Speedzone?

Discussion in 'Pesticide & Herbicide Application' started by Bluelude1, Oct 21, 2018.

  1. Bluelude1

    Bluelude1 LawnSite Member
    Messages: 104

    It's recommended to use a non-ionic surfactant with Sedgehammer, but I also need to spray some Speedzone on the same area which I've heard multiple times doesn't need a surfactant.

    Is there any issue mixing the Sedgehammer w/ surfactant and the speedzone?
  2. greendoctor

    greendoctor LawnSite Fanatic
    Messages: 10,870

    No problems. If anything, because Speedzone is formulated with a nonionic surfactant and a low viscosity crop oil, surfactants are not needed. I often use Speedzone instead of surfactant if I have to go after Sedges and broadleaves in a lawn.
    hort101 likes this.
  3. grassmasterswilson

    grassmasterswilson LawnSite Fanatic
    from nc
    Messages: 5,180

    I’d skip additional surfactant and just run speedzone/sedgehammer
  4. RigglePLC

    RigglePLC LawnSite Fanatic
    Messages: 15,714

  5. OP

    Bluelude1 LawnSite Member
    Messages: 104

    Think there would be any issue if I did add the surfactant just to be on the safe side?
  6. That Guy Gary

    That Guy Gary LawnSite Silver Member
    Messages: 2,435

    Too much surfactant will burn the turf. I looked at the MSDS though and Speedzone doesn't look like it contains it.

    The issue i with the carfentrazone. I think it's tall fescue and warm season grasses that can be injured by it.

    If you have time I'd do some spot treat testing. Or just split the apps.
  7. OP

    Bluelude1 LawnSite Member
    Messages: 104

    Talked with Speedzone and they didn't think the surfactant or sedgehammer would be an issue.
    That Guy Gary likes this.
  8. RigglePLC

    RigglePLC LawnSite Fanatic
    Messages: 15,714

    I did a few tests two years ago--non-ionic surfactant did not injure grass even at high rates. But the surfactants did not improve the effectiveness much.

    Quiksilver (carfentrazone) claims to be safe on most grass types.
  9. grass4gas

    grass4gas LawnSite Senior Member
    Messages: 770

    Doc, glad to see ya postin again. Hope all is well and you made through OK with
    your family issues.

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