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Yellow Nutsedge and Crabgrass Control

Discussion in 'Pesticide & Herbicide Application' started by bruces10, Aug 15, 2009.

  1. JDUtah

    JDUtah LawnSite Silver Member
    from UT
    Posts: 2,636

    I just dropped some cash on a gallon of Q4 today. Wanted just the quinclorac (drive xlr8) but the JDL out here hasn't decided to carry it. I wasn't going for the broadleaf control but it is all i could find. Tests start tomorrow. Any tips or personal insight into the Q4? mostly bluegrass in alkaline soil for me...
  2. lilmarvin4064

    lilmarvin4064 LawnSite Senior Member
    Posts: 757

    I'm just now see some results from a Solitare application I did. This stuff is awesome! most of my crabgrass is 70% brown, and nutsedge 50% brown in 3 days. I mixed with a 1/2 rate of Momentum FX2. All I can say is, wow! I don't think I'll ever again use Q4, and might stop using Drive as well. Also, mixed with the momentum, I'm getting Nimblewill control!!

    Try some Solitare...
  3. jbturf

    jbturf LawnSite Bronze Member
    Posts: 1,433

    never heard of solitare, just looked it up and did a comparison
    Q4 oz of active per K at low label rate
    quinclorac: .1479
    sulfentrazon: .0179

    Solitare oz of active per K at low label rate
    quinclorac : .206
    sulfentrazone: .0688

    if my math is right
    there is a substantial amount more active being used in solitare
    and it says on the label it controls nutsedge, not suppresses it like Q4

    how much for a gallon?
  4. lilmarvin4064

    lilmarvin4064 LawnSite Senior Member
    Posts: 757

    I got it at JDL for $112.50. They said this was an introductory price, plus I got a $15 mail-in rebate. It is a dry formulation like Drive, 1#.

    Here's some pics 3 days after treatment...




    first 2, all crabgrass on the top of the ditch, probably kylinga in the bottom of the ditch, maybe some nutsedge.

    3rd pic, large patch of crabgrass, went over it real fast; 3 days later

    give me a few days and I'll post some pics of nimblewill control!
    Last edited: Aug 27, 2009
  5. americanlawn

    americanlawn LawnSite Fanatic
    from midwest
    Posts: 5,859

    A new product came out this year called "Dismiss" from FMC. It fries nutsedge fast.

    Basagran, Manage, Sedgehammer, Q4 (at a high rate) will also kill it.

    Here's what I've been using this summer:

    Q4 (3 ounce per gallon rate), 1/2 rate of Dismiss, and a little LI700 for extra measure. This mixture fries crabgrass & kills nutsedge pretty quickly.

    CPS (Crop Protection Services) -- formerly UAP, sells all the above.

  6. bruces10

    bruces10 LawnSite Member
    from Alabama
    Posts: 7

    Thanks for the advise. Sounds like a game plan!
  7. jbturf

    jbturf LawnSite Bronze Member
    Posts: 1,433

    wow that is really a high dose of sulfentrazone
    i wonder how safe that is on desireable plants in hot sun?
    ive seen Q4 alone burn down some nutsedge in a day in hot sun
  8. borwicks

    borwicks LawnSite Senior Member
    Posts: 615

    Q4. I use it for annual grasses only.
  9. gnoles

    gnoles LawnSite Member
    from Alabama
    Posts: 10

    We're seeing mid to high 90's right now, if I sprayed early in the morning or late in the evening (probably better with the wind) would I need to add some lesco 12-0-0 chelated iron to prevent browning?

  10. cgaengineer

    cgaengineer LawnSite Fanatic
    Posts: 15,782

    It wouldn't hurt. Did you decide what herbicide you were going to use?

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