Aphids
Common Name
--Scientific Name
Brevicoryne brassicae
Issue
Insect
Causes
Cool dry weather is most favourable for aphid development
Prevention
Spot sprays of pyrethrum or neem can prevent build up of large populations. Use of insecticides like pyrethroids might induce resistance development in aphids and eliminate natural enemies. Overhead irrigation. Wash with water
Control
Use of natural enemies. Insecticidal soaps can be used to provide control.