Criteria 4

Question 1

4.2a) Identify suitable operating pressures and select nozzles according to application requirements

Candidate to identify and explain the use of two types of nozzle

Answer 1

Deflector - medium / coarse spray quality - generally used to apply herbicides

Air inclusion - medium / coarse spray quality. Good drift reduction properties

Full cone - medium/coarse spray quality. Suitable for spot treatment and spraying around obstacles

Fan nozzle - fine, medium or coarse spray quality. General purpose

Hollow cone - fine spray quality. Generally use for insecticides and fungicides