It is distinguished from dose rate which is the amount of active ingredient per unit area. The evaluation of spray swath including an assessment of swath width, VMD and drop densities across the swath. A general method of estimating and evaluating spray droplet sizes. The amount of active ingredient of insecticide per unit area. The aerial movement of a material to a place other than the target.
Drift results from spray droplets floating or being driven off-site.
The amount of spray material that is emitted from an aircraft spray system, usually expressed in terms of gallons per minute. The distance between successive flight patterns. The droplet size that divides the spray in half on the basis of droplet numbers. Half of the droplet will be smaller that the NMD size, and half will be larger. Any device through which liquid is emitted, broken up into droplets, and dispersed.