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temp range of three way

Discussion in 'Pesticide & Herbicide Application' started by dmar62, Mar 6, 2013.

  1. dmar62

    dmar62 LawnSite Member
    Posts: 53

    Temp will be 57 to 30deg tomorrow and I wanted to spray three way. Will it be to cold to spray. What world be the coldest temp that would be ok to spray post-m
  2. georgialawn88

    georgialawn88 LawnSite Bronze Member
    Posts: 1,075

    itll be fine. use a surfectant
  3. dmar62

    dmar62 LawnSite Member
    Posts: 53

    Ok, thanks when should I see results with these tempertures. Will a little dishwashing liquid work.
  4. RigglePLC

    RigglePLC LawnSite Fanatic
    Posts: 12,207

    Surfactant should be just as helpful, no difference whether it is cold or hot, but more helpful if the weeds are hard to wet. Four ounces dish detergent per 100 gallons worked for me. What kind of weed? Pre-em or post?

    Remember most weed killers work slowly if the weed is growing slowly. Annuals? Winter annuals? Perennials?
    What kind of herbicide? What kind of grass?

    Good question...this needs a test...would someone please compare weed control success at a cold temp side by side with weed control success at a higher temp on the same site and weed species? I am thinking dandelions, ground ivy, veronica, chickweed, henbit and violets are the main weeds suitable for such a test--as they would probably have to be frost hardy.

    Does anybody know? Is Quicksilver effective at low temps? Octane?
    Last edited: Mar 7, 2013
  5. dmar62

    dmar62 LawnSite Member
    Posts: 53

    it was bermuda and post em. i sprayed it today. it was a cold morning and it warmed up nicely today. mostly clover henbit. only a little poa.
    Posted via Mobile Device
  6. georgialawn88

    georgialawn88 LawnSite Bronze Member
    Posts: 1,075

    not gonna get rid of poa
  7. dmar62

    dmar62 LawnSite Member
    Posts: 53

    i I know just listing the weeds. its not bad in this yard.
    Posted via Mobile Device
  8. KeystoneLawn&Landscaping

    KeystoneLawn&Landscaping LawnSite Senior Member
    Posts: 774

    Correct on not controlling Poa. Multiple aps of Tenacity has good results for controlling Poa.
  9. georgialawn88

    georgialawn88 LawnSite Bronze Member
    Posts: 1,075

    and simazine
  10. grassmasterswilson

    grassmasterswilson LawnSite Platinum Member
    from nc
    Posts: 4,548

    Here we do round 1 on dormant turf and its usually cold. Sprayed speedzone for broadleafs about 18-19 days ago. A few days after the app we got a bunch of rain. It has been cool with nights in the 20s-30s and days in 50s. It's warm now and we are getting a few 60+ degree days.

    I got a few calls today about weeds not dying. First in a while. Seems like I should be seeing kill? I'm going to look at them tmrw .... If not raining.

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