- Manual hoeing is also practiced during this interval.
Root Borer:
Symptoms:
- Fully grown caterpillars are white in color, relatively active and measure 2-5 cm in length. The full grown larvae are white color.
- In grownup canes the damage symptom is visible in the form of yellowing of leaves. The canes need to be uprooted to detect the damage and the presence of larva. While attack by the first brood affects tiller production, second to fourth broods reduce cane length and weight in the decreasing order of magnitude with the brood number. Yield loss and sucrose reduction have been observed due to borer attack.
Management:
Cultural control:
Deep summer plowing. Inter culture and hand weeding. Timely irrigation. Light earthing up of crops three months after planting. Grow onion/garlic/coriander as intercrop.
Mechanical Control:
Destruction of affected shoots along with borer larvae in the pre-monsoon period reduces pest inoculum. Use of pheromone traps @ 2 in Nos/acre for monitoring. Installation of light trap @ 1 in Nos. per acre.
Biological Control:
Release of 125 gravid females of Sturmiopsis inferens a tachinid parasitoid per acre. Release Trichogramma chilonis @ 20,000/acre @ 10 days interval at the time of incidence.
Chemical Control:
Spray of Fipronil 5% SC @ 600-800 ml OR Chlorpyrifos 20% EC @ 500-600 ml OR Quinalphos 5% granule @ 2 kg/acre. OR Monocrotophos 36% SL @ 600-900 ml dissolve in 250-300 lit. of water/acre.
Termite:
Symptoms:
- Adult Creamy colored tiny insects resembling ants with dark colored heads. Newly hatched nymphs are yellowish white and about 1 mm long.
- Termite infestation occurs soon after planting when germinating sets and young shoots are affected. Newly planted sets suffer the most serious damage as termites enter through their cut ends or through the buds and feed on soft tissues replacing them with soil. The infested stools or shoots dry up soon after germination and these can be pulled out easily.
Management:
Cultural control:
Digging the termatoria and destroying the queen.
Mechanical Control:
At the onset of monsoon, they collect and destroy the adult beetles by shaking the branches of trees on which they settle during night. Set up light trap @1 in Nos/acre for trapping of white grubs adults and kill them in kerosene oil water.
Biological Control:
Entomopathogenic nematodes (EPNs) can be sprayed at the rate of 100 million nematodes per acre, in termite infested sugarcane fields.
Chemical Control:
Spray of Chlorpyrifos 20% EC @ 600 ml or Chlorantraniliprole 18.5% SC @ 200-250 ml or Clothianidin 50% WDG @100g or Imidacloprid 17.8% SL @ 100-150 ml dissolve in 250-300 lit. of water/acre.
Leave a Reply