Rice ear cut caterpillar (Mythimna separate, Noctudiae , Lepidioptera)
- Also called army worm.
Damaging stage: larva
Damaging symptoms: early instar larvae skeletonized the leaf whereas later instar larva are voracious feeder on leaf at night.
Identification
- Egg:- leaf sheath, lower surface of leaf, cluster, white
- Larvae :- yellowish – white stripes along the back and two other at the side
- Pupa : loose soil
- Adult:-forewings pinkish light brown with two pale spot, and the hind wings have prominent vain.
Life cycle :-
Egg—7-9 days–> larva —20-25 days–> Pupa —9-29 days –> Adult
Management :-
- Deep ploughing , flooding after crop harvest
- light trap
- Bacillus thuringiensis
- Larval; parasitoid : Cortesia ruficrus, tachinid flies, Apentalis spp
- Spinosad ,multineem product
- Choloropyriphus 50% + cypermethrin 5% @ 5-2 ml/l
- fenitrothion 50%Ec @1ml/l .