Abstract
In this report we studied on the spraying methods for Horizontal boom nozzles of the motor sprayer. It was good effect that booms has been netted by some nozzle setting angles (about 30-60 degrees)
We found the good conditions on spraying heights and intervals of nozzle, etc, on each pest controls. The deposits of chemicals to the top were about 4-6 times to base of rice plants.
On the results from Report I to III, We concluded the spraying methods of this Horizontal boom.
