Helicoverpa armigera
Cotton bollworm
Principle Hosts
Cotton, Potato, Pistachio, Rice, Tobacco, Maize, Flax, Tomato, Ground Nuts, Chickpeas, Soybeans, Peas, Okra
Global Distribution
World-wide
Damage & Symptoms
The caterpillar feeds on leaves and stems, but the main damage is to the crop’s reproduction organs such as capsules, pods, buds, berries, and inflorescences. This causes the rotting of the fruit and leads to fruit dropping. The large holes left o plant tissues make them susceptible to fungi and bacteria
Method of Control
Mass Trapping & Monitoring
Application
A) Mass Trapping:
Orchard:15-25 traps per hectare placed 160 cm from the ground
Field and green house:25-30 traps per hectare placed 10 cm on the upper canopy
B) Monitoring: 1-2 traps per hectare
Trap Type
Unitrap & McPhail traps
