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t-zone trial

Discussion in 'Pesticide & Herbicide Application' started by dgw, Jun 27, 2011.

  1. grassman177

    grassman177 LawnSite Fanatic
    Posts: 9,795

    fescue, blue and mixes of the two. i never have issues untill it is a dry period. i am too long ago to remember if triclopyr has any truf damage in those conditions?
  2. greendoctor

    greendoctor LawnSite Fanatic
    Posts: 9,064

    Cool season turf in hot, dry conditions. I would advise not applying anything. Especially if they are going through heat dormancy. Triclopyr is safer in cool weather. Even I stop spraying if it is over 90 and excessively humid. Otherwise I will have fried grass and vapor damaged trees and shrubs to deal with.
  3. grassman177

    grassman177 LawnSite Fanatic
    Posts: 9,795

    for the most part, we dont have bad infestations of any weeds, but the ones there are can be hard to get a good kill in dry conditions. again, it really is about proper spraying conditons that are rarely there. i do try to take advantage of it though when possible.

    so, what could be better on oxalis and sedges during dry other than surge at max rate and a good surfactant?
  4. greendoctor

    greendoctor LawnSite Fanatic
    Posts: 9,064

    Straight Dicamba for the oxalis. Sedgehammer for the sedges. Those are the two products I have not had any problems with in hot, dry weather.
  5. dgw

    dgw LawnSite Bronze Member
    from OH
    Posts: 1,008

    update, all oxalis sprayed is completely gone!

    the violet is still there , but hurting pretty bad
  6. DA Quality Lawn & YS

    DA Quality Lawn & YS LawnSite Fanatic
    Posts: 8,896

    I sprayed a few lawns with oxalis/woodsorrel with straight Trimec Classic last Friday. It was mid eighties and fairly humid. Checked some of those lawns last night, and surprisingly the TC was knocking the oxalis down. I would say probably 50-75% kill. Not bad for something that is not supposed to put a kill on oxalis.

    That said, I am switching to TZone for any future outbreaks of oxalis. That, or Momentum FX2 if it is over 75-80% or so.
  7. RigglePLC

    RigglePLC LawnSite Fanatic
    Posts: 12,218

    You should use Trimec or T-Zone at maximum label rate for oxalis and the tough weeds. Oxalis and some tough weeds are hard to wet. You should include a surfactant (as much as you want--no regulations). Of course, surfactant can be costly, except it is cheap in spot spraying and low volume situations.
    Try to spray all weeds when they are young and growing fast--rather than mature at flowering or going to seed.

    LAWN ESCAPE LawnSite Member
    Posts: 8

    T-Zone Herbicide works great for Oxalis and Creeping Charlie control (also known as ground ivy).

    I applied T-Zone at the 1.5 oz/1,000 sq ft rate and got excellent results. Also according to the universities, fall is an excellent time to control Creeping Charlie.

    For wild violets: The T-Zone label says *** For best results, apply in the spring when wild violets are blooming or apply a late fall application followed by a spring application. http://www.pbigordon.com/pdfs/T-Zone-SL.pdf

    For spring applications to "blooming" wild violets, the late April or early May is the best timing.

    Pictures are worth a thousand words.

    SEE Creeping Charlie (Ground Ivy) pictures:
    SEE Oxalis pictures:

    Untreated and 14 days (both weeds) after treatment with T-Zone.

    MidTownDemo 09-29-09 010.jpg

    10-12-2009 049.jpg

    MidTownDemo 09-29-09 036 smaller untreated.jpg

    10-12-2009 Oxalis 015 smaller.jpg
  9. dgw

    dgw LawnSite Bronze Member
    from OH
    Posts: 1,008

    nice , lawn escape, thanks guys

    DA- i found trimec can be deceiving with oxalis , it will suppress it but thats all ive gotten

    i run 992 in my 120 gallon tank at 1.20z per k , with a surfactant and have had no kill on oxalis

    now that i know t-zone will kill oxalis, i picked up a pound of dry drive 75

    im going to mix t-zone and drive in my spot backpacks in hopes of creating the ultimate spot spray solution

    i will document a few difficult to control weeds

    let me know if there are any requests
  10. Young Bros

    Young Bros LawnSite Senior Member
    Posts: 660

    We use T-Zone in the fall-late fall. We don't use in high temps cause it is ester based. Volitization can occur with higher temps, high humidy, & light-no wind. Tricropyr works good in the fall, cause in the fall weeds are transfering all their energy to the roots. Works pretty good on creeper & violets. We always use LI700 in our tank mixes.

    For crabgrass, we use Solitare. It has sulfentrazone (also in t-zone) & quinclorac (also in drive) in it, so it kills weeds & crabgrass. Nice little bottle of dry with a scoop that we put in backpacks.

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