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 later darker, 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 ellept and larva          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