Symptoms of Damage

• Windowing symptom
• Heavy defoliation  and  large amount of faecal matter in the plant whorl.
• Bore holes in the developing internodes, damage on ear head.

Identification of insect pests

Egg           : Dome shaped with flattened base. 
Larva        : Greenish with black head, four black spots at tail end, White inverted “Y” mark on head.
Pupa         : Obtect type, reddish brown in color.
Adult         : Forewing: Male: brown Female: Grayish brown
Hind wing : Male and Female: Iridescent silver-white


                

   Central whorl with fecal Pellet                    Series of holes                                Defoliation

Economic threshold level

ETL: 10% infested fruiting parts or one egg or one larva/plant.

Integrated Management

Deep ploughing and application of neemcake @ 250 kg per ha.


Timely sowing and avoid staggered sowing. Follow crop rotation


Seed Treatment: Thiamethoxam 30 FS @ 10g or Beauveria bassiana @ 10 g per kg of seed or cyantraniliprole 19.8 % + thiomethoxam 19.8 % @ 4 ml/kg seed


Border crop: cowpea, sunflower, gingelly and marigold


Spray with Azadirachtin 1500 ppm at early stage.

               

Male                                                  Female

Egg

Larva

Pupa