Crop Protection :: Custard Apple
Fruit fly: Bactrocera zonata
Symptoms of damage
- Maggot bore into the semi ripened fruits
- Feed on the inside fruits
- Affected fruits gets shriveled, malformed, rot and fall off
Identification of pest:
- Larva: Yellowish apodous maggots
- Adult: Light brown with transparent wing
Management:
- Collect fallen infested fruits and dispose them by dumping in a pit and covering with soil
- Provide summer ploughing to expose the pupa
- Immersion of fruits in hot water (45 to 47 °C) for 60 minutes to kill eggs and maggots
- Monitor the activity of flies with methyl eugenol sex lure traps.
- Use bait spray combing any one of the insecticides and molasses or jaggery 10 g/l,
- Fenthion 100 EC 1ml/l
- Malathion 50 EC 2 ml/l
- Dimethoate 30 EC 1 ml/l
- Carbaryl 50 WP 4 g/l
- two rounds at 2 weeks interval before ripening of fruits
- Prepare bait with methyl eugenol 1% solution mixed with malathion 0.1%.
- Take 10 ml of this mixture per trap and keep them in 25 different places in one hectare
- Spray 0.1% malathion 50 EC at 1ml/lit
- Field release of natural enemies Opius compensates and Spalangia philippines
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Larva |
Adult |
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