Symptoms of damage :
| Stem borer: Sahyadrassus malabaricus Symptoms of damage : The stem borer infests the main stem of young trees at the basal region. The larva of the pest girdles the stem and bores downward into it. The girdled portion and bore-hole is covered with a mat- like frass material. The infested trees wilt and succumb to the pest attack subsequently. Management: Spray quinalphos 0.1% around the bore-hole and inject the same into the bore-hole after removing the frass. Swab the basal region of the main stem and keep the basins free of weeds Image source: www.ignfa.gov.in |
- The stem borer infests the main stem of young trees at the basal region.
- The larva of the pest girdles the stem and bores downward into it.
- The girdled portion and bore-hole is covered with a mat- like frass material.
- The infested trees wilt and succumb to the pest attack subsequently.
Management:
- Spray quinalphos 0.1% around the bore-hole and inject the same into the bore-hole after removing the frass.
- Swab the basal region of the main stem and keep the basins free of weeds
Image source:
www.ignfa.gov.in