Mango (Mangifera indica)
Stone Weevil (Sternochetus mangiferae)
Symptoms
- Weevils laid singly on the pericarp of tender marble sized fruits.
- On hatching grubs bore through the pulp, feed on seed coat and later damage the cotyledons.
- Pupation is inside the seed . The pulp adjacent to the affected stone is seen discoloured when the fruit is cut open.
Management
- Collection and destruction of infested and fallen fruits at weekly interval till harvest fruit.
- Ploughing of orchard after harvest to expose hibernating adults, reduce, infestation levels.
Chemical Control
| Sl.No | Generic Name | Trade Name | Color code | Dosage/litre | Knapsack Sprayer (Capacity 10L) | Recommendation | Remarks | |
|---|---|---|---|---|---|---|---|---|
| Per acre (200 L) | Per hectare (500 L) | |||||||
| 1 | Malathion 50 EC | Agromala, Agromala Malathion, Celthion, Hilmala, Kthion, Malaacid, Simala Milthion, Tagthion Malamar, Thisol | Blue | 1 ml/litre of water | 10 ml | 200 ml | 500 ml | |
| 2 | Quinalphos 25 EC | Agroquin, Anuphos, Guin Guard Tagquin, H.LX, Hilquin Geelux, Kinalaux Exalux, Krilux, Quinaswan Flash, Quincid Starlux, Rambalux Quinolux | Yellow | 2 ml/litre of water | 20 ml | 400 ml | 1000 ml | |
