Potato 3
White grubs: Holotrichia sp.
Symptoms of damage:
| Symptoms of damage: Grubs feed on roots and tubers Grubs feed voraciously during night time Identification of pest: Larva : “C” shaped grub Adult: Brown beetle with pale prothorax Management: Summer ploughing to expose pupae Dust Quinalphos 5% @25 kg/ha at 10 days after first summer rain Set up light trap @1/ha between 7 PM and 9 PM Handpick adult beetles in the morning | |||
| Infested Potato | Grub | Adult |
- Grubs feed on roots and tubers
- Grubs feed voraciously during night time
Identification of pest:
- Larva : “C” shaped grub
- Adult: Brown beetle with pale prothorax
Management:
- Summer ploughing to expose pupae
- Dust Quinalphos 5% @25 kg/ha at 10 days after first summer rain
- Set up light trap @1/ha between 7 PM and 9 PM
- Handpick adult beetles in the morning