Brinjal fruit and shoot borer
(Leucinodes
orbonalis Guenee, Lepidoptera, Pyralidae)
Source:-Prant Protection Unit, KVK, Panisagar
 |
| Larvae bored on shoots |
 |
| Damaged fruit |
 |
| Damage of terminal shoots |
This pest also attacks many solanaceaus plants and
occasionally on the green pods of peas also. The damage is done by caterpillars
which are creamy white when young, but light pink when full grown. The adult
moth is white but has a pale brown or black spots on the dorsum of the thorax
and abdomen. Its wings are white with pinkish or bluish tinge and are ringed
with small hair along the apical and anal margins.
Damage symptoms :
When
terminal shoots are attacked, the growing points are killed.
The
affected shoots are lodged down.
They
bored into the fruits.
Tunnels
are found in infected fruits. The larvae may be seen in the tunnel during their
feeding.
The
secondary infection with fungus is resulted rotting of the fruits.
Fruits become unfit for consumption
Management:-
- Remove
the affected terminal shoot showing boreholes.
- Remove
the affected fruits and destroy.
- Avoid
continuous cropping of brinjal crop
- Grow the varieties with long and narrow fruits in endemic areas
Maintain proper spacing and clean cultivation - Pheromone traps @ 5/ acre (leucilure) should be installed for monitoring and mass trapping of shoot & fruit borer Leucinodes orbonalis. Replace the lures with fresh lures after every 15-20 day interval.
 |
| Pheromone trap in Brinjal field |
 |
| Pheromone traps |
 |
| Pest surveillance officer visit brinjal field |
 |
| New generation water traps used in brinjal field |
- Bird perches @ 10/ acre should be erected for
facilitating field visits of predatory birds.
- Encourage
the activity of larval parasitoids: Pristomerus testaceus, Cremastus flavoorbitalis
- Try to cover the complete field
with mosquito net.
 |
| Netting of outside field |
- Apply granules at the base of the
plant.
- Apply insecticides for borer
insect-pests.
- Insecticides of same group should not
be used repeatedly in order to avoid development of pesticides resistance
and appearance of secondary pests.
- A waiting period of 7 days should be observed after the spray.
Spray any one of following insecticides starting from one month after planting at 15 days interval
