Vol. 2, Issue 3 (2017)
Efficacy of Buprofezin on the reduction of pupal growth and development of Spodoptera Litura (Fabricius)
Author(s): Rokeya Khatun, Dr. Gopal Das, Dr. Kazi Shahanara Ahmed
Abstract: A laboratory experiment was conducted to evaluate different application methods and three different concentrations of Buprofezin 200, 400 and 600 ppm against Spodoptera litura at Department of Entomology, Bangladesh Agricultural University. Treatments were applied on 2nd instar larvae as topical or direct, leaf-dip or indirect and combined application methods. Data of pupae were recorded after completion of pupation and these data were compared with control. Results obtained show that the Buprofezin was effective in controlling Spodoptera litura by hampering the growth and development of pupae regarding weight reduction and inhibition of length & width of pupae. The results were clearly dose, time and method dependent. The highest percent of weight reduction (26.05%), length & width inhibition (19.85% & 18.29%) was recorded from 600 ppm followed by 400 and 200 ppm through combined application method. The 2nd best application method was leaf-dip which was followed by topical method. From this study it can be concluded that Buprofezin (IGR) have the potentiality to reduce the population of Spodoptera litura by inhibiting the growth and development of pupae.