EFFECT OF SOME PLANT EXTRACTS ON EGG LAYING, INCUBATION AND ADULT EMERGENCE OF PULSE BEETLE AND PROTECTION OF MUNGBEAN SEEDS IN STORAGE

Abstract

The experiment was conducted in the laboratory under the Department of Entomology, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from April to November 2013 to evaluate the effectiveness of some botanicals against the pulse beetle. The experiment comprised five plant materials each with two doses and laid out in Completely Randomized Design (CRD) with three replications. Among the plant materials, Tobacco leaf powder @ 2g/100g mungbean seeds (T8) showed the best performance against the bruchids regarding minimum days of 100% adult mortality (3 days), and reducing fecundity (83.71%), egg hatching (87.19%), adult emergence (92.05%), number of holes per grain (92.04%), as well as lowest level of grain infestation (21.67% by number) and weight loss (4.10%). Tobacco leaf powder @ 1g/100g seeds (T7) also gave the similar results. Turmeric powder @ 2.0/100g seeds (T2) and Red chili powder @ 2.0g/100g seeds (T4) gave the satisfactory result against C. chinensis. Ginger powder also gave intermediate results and neem leaf powder showed the least effectiveness regarding adult mortality, fecundity, egg hatching, adult emergence of bruhcid and grain infestation by them. Tobacco leaf powder may be used for the management of pulse beetle in storage.