RED PALM WEEVIL
Rhynchophorus ferrugineus Oli.
Adult | Grub | Infested Palm |
Cause damage to the crown and stem close to the crown. Feeding on the growing point by the grubs results in death of the palm. Wilting of leaves in the inner and middle whorls. Presence of holes in the stem and petioles showing viscous brown ooze. Extrusion of chewed up fibers through the holes. Withering of central spindle and toppling of the crown. |
LIFE CYCLE
The female weevil scoops out small holes in soft tissues and lays the eggs. Incubation period is two to three days. Soft white legless grubs bore into the interior of palms feeding on the soft tissues. The grubs pupate in cylindrical cocoon made out of fibrous strands. The whole life cycle from egg to adult takes about four months. |
INTEGRATED MANAGEMENT PRACTICES
Field sanitation and control of rhinoceros beetle. | |
Leaf axil filling with 10g Naphthalene balls (4Nos.) + sand or neem cake / marroti cake (Hydnocarpus sp.) 250 g + fine sand (250g)/ during May, September and December. | |
Cutting and burning of dead palms harboring the pest | |
Curative treatment with imidacloprid @ 0.6 – 1 ml/ lit / palm. | |
Place pheromone in bucket traps @ one per hectare. |