উত্তর সমূহ

  1. সৈয়দা সিফাত জাহান, অতিরিক্ত কৃষি অফিসার,রাজারহাট ,কুড়িগ্রাম

    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 insecticides

  2. Bijoy kumer halder, কৃষি সম্প্রসারণ অফিসার,নাঙ্গলকোট ,কুমিল্লা

    thanks a lot sir.