Paddy Case Worm - High Yields Agro

Symptoms

Larvae feed on green tissues of the leaves and the leaves become whitish and papery and add green one
Tubular cases around the tillers by cutting the apical portion of leaves
Floating of tubular cases on the water
Cutting off leaf tips to make leaf cases

Identification

Egg: Individual egg is circular, flattened, and measures 0.5 mm in diameter. It is light yellow and has a smooth surface. Mature eggs are darker and develop two purplish dots.
Larva: Pale translucent green with orange head. It has filamentous gills on the sides of the body. The larvae are found hanging from the leaf and measures upto 15mm long.
Pupa: The pupa is cream in color and about 5.5 mm long. Mature pupa is silvery white.
Adult: Moth is small, delicate white with pale brown wavy markings. The adult moth is about 5 mm long. It is bright white with light brown and black spots.

Management

ETL–2 FDL/hill (FDL- Fully Damaged Leaf)
The pest is semi aquatic and hence draining is the most effective method for the management of the pest.
Mix 400 ml of kerosene with 10 kg of sand and apply to the standing water. Dislodge the cases by passing a rope and then drain water; collect the cases and destroy.
Maintain field and bunds weed free. Do early planting and follow wider spacing.
Follow split fertilizer application.
Encourage biological control agents like hydrophilid and dytiscid water beetles which feed on larvae and spiders, dragonflies, and birds which feed on adults.
Spray any following insecticides.