They also had little adoption of electrostatic sprayers (which help sprays reach their target and avoid drift).
These have to be applied with a knapsack sprayer.
The walking speed of the sprayer operator was gauged initially to deliver the desired amount of spray over the area requiring treatment.
In developing countries, battery-operated spinning disc sprayers are a cheap alternative for resourcepoor farmers.
Both treatments were applied in 200 litres water/ha using a knapsack sprayer at a pressure of 2 bars.
Pheromone solutions were applied by means of a manual knapsack sprayer.
Devices such as hand-held sprayers, spray races or dipping vats were used as means to deliver treatments to cattle.
The sand was saturated with water using a sprayer.
