The Formulae for calculating application rates for

Spray boom/planter mounted sprayer  - metric

nozzle output (litres/min) x 600            
nozzle spacing (metres) x speed (km/h)    =  application rate (litres/hectare)

Knapsack Sprayer - metric

nozzle output (litres/min x 600       
swath width (metres) x speed (mph)         = application rate (litres/hectare)

The information contained in this web site is intended as a guide only to the performance that might be expected when operating stated products in the conditions stated.