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Ortho weed b gon

Discussion in 'Pesticide & Herbicide Application' started by 1999frontier, Mar 25, 2010.

  1. 1999frontier

    1999frontier LawnSite Senior Member
    from NC
    Posts: 562

    I'm thinking about buying a hose sprayer to connect to water hose. The dial one. How many times can you spray the weed b gon on my lawn without hurting the grass? How long should I wait between applications also?
  2. txgrassguy

    txgrassguy LawnSite Gold Member
    Posts: 3,083

    All depends what the active ingredient of the chemical is, the turf type you intend to spray, climatic conditions, soil temps and availability of irrigation.
  3. Think Green

    Think Green LawnSite Silver Member
    Posts: 2,746

    The label will direct you to NOT apply these types of herbicides through any type of hose end sprayer. The problem is the pressure and drift caused by these types of applicator's.
    Not only is the Weed-B-Gone corrosive to these cheap things, it is the fact of inaccurate mixing that is concerning. Even if you reduce the pressure at the faucet, the correct amount of mixture is impeded. If you should use one anyway, then use the diverting tip that comes with the unit. Make sure there is no wind at all and stay close to the ground. Lastly, what kind of sticking agent are you planning on mixing with this product of choice.?????
    As far as the time of application and the amount per site, it is stated on the label. Typically, it may state that 2-4D material can only be applied to a site twice as a blanket spray and multiple times for spot spraying as long as you do not exceed XX amount of ounces per acre.
    Keep in mind the drift...............the overspray that will float off to you or your neighbor's plants and trees............!!!!!!
  4. lilmarvin4064

    lilmarvin4064 LawnSite Senior Member
    Posts: 757

    good advice from Think Green however, it can be done. Dilution should be like 1 to 1.5 oz/G. might be in TSP or TBS. check wikipedia. 6 teapsoons is a liquid oz. 2 Tablespoons is a liq. oz. Most cheap hose-end sprayer are not very accurate and the o-rings and seals won't last very long. But it will work.... a couple times....
  5. lilmarvin4064

    lilmarvin4064 LawnSite Senior Member
    Posts: 757

    out of curiosity, have you ever mixed herb' concentrate with sticker concentate? ...just wondering if that would work...?
  6. greendoctor

    greendoctor LawnSite Fanatic
    Posts: 9,064

    Don't do it. Amine herbicides turn into goo if they are mixed concentrated with surfactants.
  7. txgrassguy

    txgrassguy LawnSite Gold Member
    Posts: 3,083

    Yep, green is correct as due to the dissimilar chemical composition amine herbicides require a great deal of agitation to remain in suspension with the surfactants.
    Just do a compatibility test - also the temperature of the spray water is critical as well - cooler temps equals more problems.
  8. RigglePLC

    RigglePLC LawnSite Fanatic
    Posts: 12,218

    Good advice. Since the spray goes out in front of you, go to the fartherst part of lawn and walk backwards away from the spray. don't trip. Don't get near flowers. Also wear rubber boots and pants or as the label directs.
    You may end up wearing a lot of Weed B Gone. Keep the pressure low. Best to have an assistant turn on the hose back at the house.

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