Symptoms of damage:
| Cabbage head borer: Hellula undalis | |
| Symptoms of damage: Caterpillars initially mine the leaves and make it white papery Later they feed on leaves and bore into stems Entrance hole is covered with silk and excreta Identification of the pest : Larva: Pale whitish brown with 4 or 5 pinkish-brown longitudinal stripes Adult: Moths are pale greyish-brown, suffused with reddish colour. Forewings have grey wavy lines, an apical spot and pale edged dark lunule Management: Collection and careful destruction of the larvae at gregarious stage with leaves twice a week. For control of grown up larvae apply 5% malathion dust @ 37.5 kg/ha or carbaryl 50 WP@ 375 g in 150 litre of water |
- Caterpillars initially mine the leaves and make it white papery
- Later they feed on leaves and bore into stems
- Entrance hole is covered with silk and excreta
Identification of the pest :
- Larva: Pale whitish brown with 4 or 5 pinkish-brown longitudinal stripes
- Adult: Moths are pale greyish-brown, suffused with reddish colour. Forewings have grey wavy lines, an apical spot and pale edged dark lunule
Management:
- Collection and careful destruction of the larvae at gregarious stage with leaves twice a week.
- For control of grown up larvae apply 5% malathion dust @ 37.5 kg/ha or carbaryl 50 WP@ 375 g in 150 litre of water