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The larvae of this insect attack the leaf and cause damage by feeding on the soft tissues (parts) of the leaf. After eating one of the leaves by this caterpillar, this caterpillar attacks the new leaves as well, resulting in 40-50% damage to the soybean crop. When urea is given separately to the soybean crop, the chances of caterpillar attack in the soybean crop are high.
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To protect the soybean crop from these caterpillars, prevention can be done in three ways, mechanically, chemically and biologically.
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Mechanical control: – Before sowing of soybean, do deep plowing of the field in summer so that the pupa of this caterpillar gets destroyed in the soil itself. Do not sow before monsoon because it gives favourable temperature to increase the number of this caterpillar, do not sow the crop too densely, if any infected plant is visible, then uproot it and destroy it, For better control of caterpillars, install pheromone trap at the rate of 10 nos. per acre in the field, the lure of this trap should be changed at every 3 weeks interval.
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Chemical Control: Spraying of Profenofos 40% + Cypermethrin 4% EC @ 400 ml/acre or Emamectin Benzoate 5% SG @ 100 gram/acre or Flubendiamide 20% WG @ 100 gram/acre or Chlorantraniliprole 18.5% SC @ 60 ml/acre do
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Biological control:- Spray Bavaria bassiana @ 500 gram/acre.
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