-The label of the pesticide should be examined to see if a volume application rate, spray quality, nozzle or spray concentration is recommended.
-The desired nozzle is selected and its output measured during 1 minute.
-When using lever-operated sprayers, a control flow valve, or alternatively a pressure gauge, should be fitted as close to the nozzle as possible, and the lever operated evenly with a full stroke to maintain as uniform a pressure as possible.
-The operator will need to practise before achieving an even pumping rate.
-Having determined the output from the nozzle in litres/min, the rate per unit area treated can be calculated, knowing the swath width and walking speed.
jim items answered the question on April 11, 2019 at 17:37
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