Symptoms of damage:
- Parallel rows of shot holes in the emerging leaves and
- Red tunnels in the midribs of leaves
- Dead heart in grown up canes which cannot be easily pulled
- Dead heart reddish brown in colour
- Bunchy top due to growth of side shoots
Identification of the pest:
- Egg: 10-80 egg masses are found on thetop shoot, under the surface of leaf covered with liney mesh
- Larva: Smooth, white or cream coloured with a red coloured mid dorsal line
- Adult: White coloured moth. Female has buff coloured anal tuft in abdominal tips
Management:
- Release Isotima javensis at 100 pairs/ha
- Spraying any one of the following insecticides
- Carbofuran 3% G 33.3 kg/ha
- Chlorantraniprole 18.5% SC 375 ml/ha
- Phorate 10% G 30 kg/ha
|
 |
 |
Bore holes |
Dead heart |
|
