Drive vs burn

Discussion in 'Pesticide & Herbicide Application' started by RigglePLC, Jul 27, 2012.

  1. RigglePLC

    RigglePLC LawnSite Fanatic
    Posts: 11,782

    Will Drive burn grass at high rates or high temperatures? When mixed with surfactants or broadleaf herbicides?
    I tried it using Drive 75 WP at 3 teaspoons per quart (about a half ounce per quart or 2 ounces per gallon). I included 3 milliliters of Bonide Turbo spreader-sticker per quart, (about 0.3 percent). I sprayed a spot with a hand held sprayer for 5 seconds. Temperature was 80 degrees. At 24 hours no injury to the grass was visible.

    What is your experience? Have you caused burn with Drive or other quinclorac products? Is there a difference depending on temperature?

    The label seems to suggest that fine fescue is sensitive to Drive, but still recommended. At one point label says it is OK spray new seed, and in another chart it is not safe. Mysterious.
     
  2. n-green

    n-green LawnSite Senior Member
    Posts: 362

    Was there a weed in your spot or just a test on the grass?
     
  3. grassman177

    grassman177 LawnSite Fanatic
    Posts: 9,795

    i dont use drive 75 anymore, but the xlr8 can burn when the temps are gonna get high, but imo acceptable considering. i have burned with both, and lower degrees is not an issue, it is when the temps are gonna get higher than 85 that it is a sure thing, at least to some small degree
     
  4. Pythium

    Pythium LawnSite Member
    from OHIO
    Posts: 166

    I have had burn issues with fine fescue and high temps, generic quinclorac.
     
  5. grassmasterswilson

    grassmasterswilson LawnSite Platinum Member
    from nc
    Posts: 4,469

    I sprayed Quincept or q4 last year(can't remember which) on Bermuda. It was around 90 or so. It got the weeds but did burn on some lawns. The burn showed on full sun if I remember.
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  6. lawn king

    lawn king LawnSite Silver Member
    Posts: 2,251

    I have experienced no burn issues at all spraying straight drive 75 @ high temps. Mixed with other herbicides, well thats a whole different ball game!
     
  7. RigglePLC

    RigglePLC LawnSite Fanatic
    Posts: 11,782

    Temperatures are a bit cooler here. 80 when Drive was sprayed and about 85 now, 48 hours later. No sign of burn, even though used at a high rate.

    On new seeded Kentucky bluegrass, (about 3 inches tall)...no burn...grass remained healthy, after 24 hours.

    There were no weeds in the area.

    Crabgrass is coming on strong since we had another half-inch of rain on July 27th. For the first time this season, I am seeing seed heads.
     
  8. Brett Thomas

    Brett Thomas LawnSite Member
    Posts: 83

    I have been getting burn on Tall fescue but its understandable with temps reaching 95. All spraying is done between 6:15 am and 930 am
     
  9. RigglePLC

    RigglePLC LawnSite Fanatic
    Posts: 11,782

    At 4 days after using Drive on irrigated Kentucky bluegrass/fine fescue blend...there has been no injury.

    Test repeated today 7-30 at higher temp, 93.

    Where Drive was sprayed on newly seeded Kentucky bluegrass which was about 3 inches tall, 35 days old, only very slight injury developed.

    Clumps of crabgrass were sprayed with same drive solution Drive on 7-28-2012. Sprayed above solution for 1 second 2, and 3 seconds. Herbicidal effect was evident at 48 hours. Strongest effect was at 3 seconds, less so at 2, and less so at 1 second spray. Crabgrass was at the stage of very new tiny seed stalks.
     
    Last edited: Jul 30, 2012
  10. GALAWN

    GALAWN LawnSite Member
    Posts: 167

    On bermuda above 93 I get yellowing and that's with iron added to the mix. I don't care one bit though because the crabgrass is incinerated.
     

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