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12
Jul

Management of Rice swarming caterpillar

Chemical control: Spraying of Super D (Chlorphyriphos 50% + Cypermethryn 5%) or Nural D 55 EC @ 1.25 liter in 500 liter water for 1 ha give positive results.
12
Jul

Biology of Rice swarming caterpillar

1. Egg: Eggs are spherical and creamy in colour, which are laid in a group covered over with grey hairs. 2. Larva: The caterpillars are light green with yellowish white lateral and dorsal stripes in the early stages and later become dark brown or grayish green in colour with a crescent (semi-circular) shaped black spot on the side of each segment (Fig. 10
12
Jul

Nature of damage of Rice swarming caterpillar

1. Caterpillars march in large numbers in the evening hours and feed on the leaves of paddy seedlings till the morning and hide during daytime. 2. They feed gregariously and after feeding the plants in one field march onto the next field. Under severe infestation crop gives the appearance of grazed plants. 3. Attacked plants are reduced to stumps. Nurseries situated in ill-drained marshy areas attacked are earlier than dry ground. Damage is severe during July to September.
12
Jul

Symptom of attack of Rice swarming caterpillar

Nurseries found completely eaten away by the caterpillars’ overnight.
12
Jul

Rice swarming caterpillar

Latin name: Spodoptera mauritia, Noctuidae, Lepidoptera Common name: Species: S. mauritia
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