Potato tuber moth ( Pthorimoea oprculela, Gelichlidae, Lepidioptera )

• Most serious pest of potato fieldand store condⁿ. Damaging stage : larva

Damaging symptoms :

• Larva mining the leaves and twisting tunnel intuber through eye of potato.

Identification

• Egg :laying singly underside of leaves and exposed tuber, smooth and yellow
• Larva : pink or green with darke brown
• Pupa : pupation in folded leaf, soil, inside the tuber ,cracks of tuber ,stem.
• Adult : brown black triangular spots at the lateral edges of the forewings with small blotch of mid brown and hindwings are pale gray.

Life cycle :

Egg–3-15 days–> larva –15-30 days–> Pupa –6-10 days–> Adult

Management

• Larval parasitoid : Apenteles gelechiidivorus , Bracon
• Egg/Larval parasitoid : chelonus phthorimaeae,copidosoma
• Predator : chrysoperla carnea( green lace wing)
• Bacteria: Bt var kurstaki
• Pheromone trap like PTM1 and PTM 2x to attract male mass @ 4 capsule/ 100m³ volume
• Potato intercropped with onion, garlic, pea,
• Planting of potato at 10 cm depth and hillig up 3
• Orange peel oil and vegetable oil reduced fecundiy of
• Appy 100 pmm neem oil at storage
• Seed treated with quinalphos.