Scale insect: Melanaspis glomerata
| Scale insect: Melanaspis glomerata | |
| Symptoms of damage: Dark encrustations on the internode Identification of the pest: Nymph: Females multiply ovo-viviparously. The nymphs that hatch out from the eggs within the female’s body come out through the genital aperture. They are called ‘crawlers’. They settle after selecting suitable site for feeding Adult: Greyish black or brown circular scales, they cover the nodal region forming a thick encrustation | |
| Management: Select scale insect free setts Bunds free from weeds Avoid repeated ratoons Detrash 150-210 DAS Drain excess water Presoak the setts in 0.1% malathion solution Spray of the following insecticides(120/150 day after detrashing) Dimethoate 30 EC @2ml/lit of water methyldemeton 25 EC @2ml/lit of water |
Symptoms of damage:
- Dark encrustations on the internode
Identification of the pest:
- Nymph: Females multiply ovo-viviparously. The nymphs that hatch out from the eggs within the female’s body come out through the genital aperture. They are called ‘crawlers’. They settle after selecting suitable site for feeding
- Adult: Greyish black or brown circular scales, they cover the nodal region forming a thick encrustation
Management:
- Select scale insect free setts
- Bunds free from weeds
- Avoid repeated ratoons
- Detrash 150-210 DAS
- Drain excess water
- Presoak the setts in 0.1% malathion solution
- Spray of the following insecticides(120/150 day after detrashing) Dimethoate 30 EC @2ml/lit of water methyldemeton 25 EC @2ml/lit of water
- Dimethoate 30 EC @2ml/lit of water
- methyldemeton 25 EC @2ml/lit of water