Army Worm and Its Control
Scientific Name - Mythimna separata ( Walker, 1865)
Occurrence Stage - Seedling Stage and Vegetative Stage
Nature of Damage - Mianly feeds on leaves and inflorescence. Rice fields can be destroyed at the same time.
Damage Symptoms - Large cuts at the basal region, fallen of seedlings, leaves cuts, eating the whole leaf leaving the midrib, destroying of flowers and grains, falling panicles on the ground
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Source : IRRI |
Source : Plant wise knowledge bank |
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Figure 1 Paddy Armyworm |
Figure 2 Paddy plant destroyed by armyworms |
Figure 3 Moth |
Best Control Measures
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Make ditches and barriers between fields
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Fill the dithes with water and kerosene
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Pick eggs and larvae by hand
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Grazing ducks into the rice field where there is high larvae density
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There is no resistant variety to armyworm
Chemical Control
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Spray with contact insecticides such as Malathion, Chlopyriphos, Carbofurum-3 G at recommended doses.
ET (Economic Threshold)
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1-5 larvae per plant before panicle formation (or) 9 larvae per square metre
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1 larvae per hill (10 panicles) at panicle formation