Trimec 992 Application

Discussion in 'Pesticide & Herbicide Application' started by start2finish, Apr 6, 2008.

  1. start2finish

    start2finish LawnSite Senior Member
    Posts: 497

    I treated my test plot today under unusual weather. Wanted to try it.

    temp 55
    cloudy
    2.5 inches of rain last 5 days
    chickweed and dandelion target (growing overnight)
    clover present

    3 pints/ acre rate with 27 gallons per acre application surfactant added to tank mix at 1/2oz per gallon (HOOK)

    my thoughts were is was a little cool for the app, but we will see.

    input, any predictions.

    oh yea, desired grass present is a mixture of ky-31 and turf type fescue(regional blend)
     
  2. LawnTamer

    LawnTamer LawnSite Gold Member
    Posts: 3,988

    I think you'll get fairly good results. I use 992/3-way at about the 3pt/acre and get very good results down to about 48 degrees. Is the chickweed common chickweed, or mouseear chickweed?
     
  3. start2finish

    start2finish LawnSite Senior Member
    Posts: 497

    common chickweed
     
  4. RigglePLC

    RigglePLC LawnSite Fanatic
    Posts: 11,925

    Conditions are near ideal. Cool cloudy, weeds are young. Best results are obtained when air is humid. If the weed killer solution dries on the foliage before it is absorbed--it crystalizes--and can no longer be absorbed.
     
  5. start2finish

    start2finish LawnSite Senior Member
    Posts: 497

    that's good news, I have devoted a section of turf at my home/shop to experiment. The cool cloudy situation bothered me a little. We have had a little early start to things this year. And these 50's made me think that they would have slowed down a bit and wouldn't translocate the poison.LOL That's what the test plot is for. I am keeping records on both plots to see what improvements.

    one is full on all I can do

    the other is fertilization only. 1lb N 30%pscu per 1000 March 1
     
  6. start2finish

    start2finish LawnSite Senior Member
    Posts: 497

    wanted to keep this thread fresh, 24 hrs after app, chickweed appears stressed. dandelion is unchanged,.
     
  7. sedge

    sedge LawnSite Fanatic
    Posts: 33,070

    We had to add quick silver and we are using 1.5 oz per m2. Terrible results. Just started using the quick silver Saturday, so we will see. I am adding .0128oz of quick silver per m2. This is in 50 to 60 degree temps on Bermuda. Getting partial kill on henbit, total kill on dandelion. Partial on clover.
     
  8. start2finish

    start2finish LawnSite Senior Member
    Posts: 497

    great results, this would seem to be a great application. 2 weeks passed since app. clear signs of weeds dying. slow, but definately signs were present after 1 week that it was working.
     
  9. LawnTamer

    LawnTamer LawnSite Gold Member
    Posts: 3,988

    Sedge, I used to go at a higher rate too. I found I got a lot of burn down, but not the kill I wanted. I go just barely lower than you, I am at 1.2-1.28/1,000. I use Lesco spreader/sticker and have been getting good results, of course, we have different soil, grass and weed pressure, but in my case, I found I actually got better kills, slower but better, at the lower rate.
    I used to run Speedzone, which is basically 992 mixed with carfentrazone (quicksilver) It was great on dandelions and clover, but it just burnt the tops of of mallows and other rooty weeds.
     
  10. (wi) Roots

    (wi) Roots LawnSite Member
    from 9
    Posts: 152

    Try ester formulation at those temps. Just a suggestion.
     

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