INCIDENCE OF MAJOR INSECT PESTS OF OKRA AND THEIR MANAGEMENT

Abstract

The experiment was conducted in the field of Sher-e-Bangla Agricultural University farm, Dhaka, Bangladesh during October 2017 to January 2018. The experiment consists of eight treatments such as T 1 = Actara 25 WG @ 1g/Litre of water sprayed; T = Neem oil @3ml/Litre of water mixed with 10ml of trix liquid sprayed; T ii 3 2 = Water based neem seed kernel extract @ 5g/Litre of water sprayed; T 4 = Bioneem plus 1.0EC @ 1ml/Litre of water sprayed; T = Ostad 10 EC @ 2ml/Litre of water sprayed; T 6 = Sevin 85 WP @ 1.2g/ Litre of water sprayed; T = Marshal 100EC @ 1.5ml/ Litre of water sprayed; T =Untreated control. The experiment was laid out in Randomized Complete Block Design 1 8

treatment. In case of leaf infestation, the lowest percent leaf infestation was caused by whitefly 1 treatment. Beside this, natural enemies also observed in the research field such as, the highest lady bird beetle 1 treatment and the lowest lady bird beetle treatment during the study period . The highest okra yield 1 1 treatment. These findings illustrated that, the Actara 25 WG treatment was more effective for the reduction of incidence of major insect pests of okra.