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Homemade Boom Sprayer Calibration Help

Discussion in 'Homeowner Assistance Forum' started by PWN, Apr 24, 2012.

  1. PWN

    PWN LawnSite Member
    Posts: 22

    We just bought a 50 gallon, Wylie ATV spot sprayer. I built a boom for it, and I modeled it after an old spray rig we have. Robbed some nozzles off of it, and kept the same spacing & height off the ground. The boom fits the reciever hitch on my mule, and is 7' wide. Pics to come....

    here's the specs:
    5 Nozzles @ 20" Spacing
    20" above grade
    Governed the mule to 7mph (a little fast IMO)
    Appication rate: 18 GPA
    Acres per tank: 2.7 (50 gal / 18 gpa)

    I used this chart to calibrate it: http://ohioline.osu.edu/aex-fact/0520.html
    I measured off 204', and clocked the time it took to travel the distance (19 seconds). Then captured a sample from each nozzle for 19 seconds. All nozzles caught 18 oz's.

    Here is my question.....Are my calculations correct?
    The herbicide I want to use has an application rate of 2 pints per acre.
    So I take 2.7 ac/tk x 2 pts/ac = 5.4 pts/tk

    So i need 5.4 pints of chemical
    Does this check out?
    Im trying to keep it simple, but I feel like im missing something.

  2. PWN

    PWN LawnSite Member
    Posts: 22

    Here's the pics....



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