Avoid staggered planting and destroy ratoons of the previous rice crops
Use a balanced dose of fertilizer.
Avoid dense planting by planting rice seedlings at 20cm X 20cm apart
Do not apply insecticides unnecessarily
Control measures:
When there is one or more brown planthoppers per tiller and when fewer
natural enemies than pests are seen, then management of this pest is
necessary.
Drain water completely from the field for a week. Then apply intermittent (weekly) irrigation to reduce the BPH population.
Spray a neem based insecticide e.g. Azadirachtin @ 3-5 ml per
litre or chloropyrifos 20% EC @ 1.5 ml per litre or imidacloprid 70%WG @
1g/10 litres of water on the lower part of stem of rice plant
If brown planthopper attack occurs after milking stage, it will be
too late to damage yield so there is no need to apply insecticides
সার্চ করুন
উত্তর সমূহ
Preventive measures:
- Avoid staggered planting and destroy ratoons of the previous rice crops
- Use a balanced dose of fertilizer.
- Avoid dense planting by planting rice seedlings at 20cm X 20cm apart
- Do not apply insecticides unnecessarily
Control measures: When there is one or more brown planthoppers per tiller and when fewer natural enemies than pests are seen, then management of this pest is necessary.- Drain water completely from the field for a week. Then apply intermittent (weekly) irrigation to reduce the BPH population.
- Spray a neem based insecticide e.g. Azadirachtin @ 3-5 ml per
litre or chloropyrifos 20% EC @ 1.5 ml per litre or imidacloprid 70%WG @
1g/10 litres of water on the lower part of stem of rice plant
If brown planthopper attack occurs after milking stage, it will be too late to damage yield so there is no need to apply insecticidesthanks a lot sir.