The cotton jassid is a serious sucking pest of cotton in Pakistan.
Adults are small,
like the tip of a lentil, and flat. Adults are usually yellowish-green or white
with black spots on the front wings. They jump and fly away at the slightest
disturbance. The cotton jassid sucks sap from the underside of leaves and leaf
buds. When jassids are abundant, cotton
growth is stunted, the leaves turn downwards and heavy fruit loss may occur on
pre flowering plants. Leaves turn pale and a rust red colour develops at the
edges. During a severe attack, leaf shedding occurs.
The jassid attacks
cotton plants throughout the year and lays its eggs in soft plant tissue. Cotton
jassids are more active during the hot periods of summer and can also live on
other plants, like potato, chilli, brinjal, okra and ornamental plants.
- Predatory bugs like ladybird beetles and spiders will
attack jassids. Do not kill these natural enemies when you see them!
cultivation: avoid excessive use of fertilizer (no more then 3-4 bags of
urea) as jassids will be attracted to crops higher in nitrogen, as they
will be tastier
cotton from 15 April to 31 May to escape jassid attack
- Use seed
treatment (imidacloprid 70ws @10gm/kg seed) at the time of sowing
dimethoate 40EC 400ml per acre at the time of high infestation, no more than
- Apply acephate75SP
250-375gm per acre at the time when pest pressure is highest
Imidacloprid and Dimethoate can have non-target effects. Wear rubber gloves and
shoes while handling insecticides. Keep your mouth and nose covered with a mask and do not eat
,drink or smoke while using insecticides. Dispose of used Bottles properly.
When using a pesticide, always wear protective clothing and follow the instructions on the product label, such as dosage, timing of application, and pre-harvest interval.