Crop Development Stage | Pest | Damage/Symptoms Caused | Control Strategy | Comment |
Vegetative growth | Aphids | Leaf curling. With heavy infestation a black sooty covering of the leaves and stem will appear as a result of the honey due produced by the insects. | Seed treatment with Cruiser 350FS at 300g/100kg seed | Seed treatment with Cruiser 350 FS gives the crop a healthy start enabling it to withstand pest attack even if their numbers may not be noticeable. Cruiser 350 FS will give up 6 weeks protection to the young plant |
Jassids | Leaf curling downwards and yellowing starting from the leaf margins | Seed treatment with Cruiser at 300g/100kg seed | ||
Flowering and early boll formation | Aphids | Appearance of greasy black sooty material covering the leaves and stem. | Apply Fenom Plus at 625mls/ha | Aphid attack at this time will result in reduction in cotton quality |
Bollworms | Abortion of flowers called flared squares. Attacked immature bolls drop off. | Apply Polytrin Ka or Fenom Plus at 625mls/ha or Karate 5EC at 400mls/ha. Repeat application at two weeks interval | Heavy infestations may result in total loss of the crop | |
Mature bolls | Cotton strainers | Apply Polytrin Ka or Fenom Plus at 625mls/ha. | Staining of cotton lint resulting in reduced quality |