walking and spraying per 1000 sf.

Discussion in 'Pesticide & Herbicide Application' started by ant, Sep 3, 2002.

  1. ant

    ant LawnSite Silver Member
    Messages: 2,469

    i know it depends on walking speed,ect....

    i calabrated my tank sprayer to put out 2 gal. per. 1000 sf.(lesco chem lawn gun 120 psi)
    which comes out to 2 gal. per min.walking normal

    sound normal?
    i don't have much tank sprayer experence.(picked up a used 50 gal. lesco last yr. and like it)
  2. tremor

    tremor LawnSite Bronze Member
    Messages: 1,476

    I seem to walk a little faster than some folks.
    I cover 1500 sq ft per minute. With your 2 gpm Yellow nozzle, I'd get 1.33 gals/M.

    I think that pressure guage is off, though it doesn't really matter. The yellow nozzle should deliver 2 gpm @ around 25psi. The gun shouldn't be able to work properly at 120 psi. The shut-off spring isn't strong enough to return the handle & valve back to "off" at that high a pressure.

    Blue = 1.5 gpm @ 15-25 psi (herbicides)
    Yellow = 2.0 gpm @ 15-25 psi (insect & fung)
    Green = 3.0 gpm @ 15-25 psi (insect & fung)
    White = 4.0 gpm @ 15-25 psi (tank mixxes w/pre's)

  3. Fill you tank to the max, then walk n spray for 1 min. then re fill with a measuring cup to determen how many gallons you used.

    I found the same as tremor, as I walk a little fast.

    BTW use plain water to do this.

    PS if you have a gas pump, the pressure gauge will most likely not go below 100-200psi when off. and if you were at 120psi that spray would be more of a mist than a droplet and drift like heck.

    When spaying lawns you run from about 40psi and down.

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