ECO-FRIENDLY MANAGEMENT OF ANGOUMOIS GRAIN MOTH, SITOTROGA CEREALELLA OLIVIER USING SOME BOTANICALS AND FUMIGANTS ON STORED PADDY

Abstract

The study was conducted in the laboratory under the Department of Entomology, Sher-eBangla Agricultural University, Dhaka, Bangladesh during the period from April to September, 2011 to find out the efficiency of some botanicals and fumigants applied against Angoumois grain moth, Sitotrogra cerealella Olivier on stored paddy. The study was conducted under the two separate experiments considering botanical and fumigant based management. In case of botanical based experiment, five botanicals viz., dried leaf powder of neem @ 2.5 g/kg paddy, bishkatali @ 2.5 g/kg paddy, marigold @ 2.5 g/kg paddy, mahogany @ 2.5 g/kg paddy, chopped garlic bulb @ 1.0 g/kg paddy along with one untreated control were evaluated. While in case of fumigant based experiment, three fumigants viz. camphor @ 1.0 gm/kg paddy, phostoxin tablet @ 200 mg/kg paddy, naphthalene @ 500 mg/kg paddy along with one untreated control were evaluated. The experiments were laid out in Completely Randomized Design (CRD) with 4 replications. Data were recorded on grain infestation by number and weight, seed germination and economic returns of the management practices in terms of benefit cost ratio (BCR). Among five promising botanicals,dried neem leaf powder reduced the highest grain infestation by number and weight (72.77% & 62.07%, respectively) as well as the highest % germination saved over control (28.74%) . The highest (11.65) benefit cost ratio (BCR) was also achieved by the dried neem leaf powder than other botanicals. Among three promising fumigants, both camphor phostoxin tablet reduced the highest percent of grain infestation (100%) by number and weight, Conversely, camphor saved the highest percent of seed germination over control (35.81%) than other fumigants. The camphor was also considered as the most economically viable tool for the management of rice moth,S. cerealella on rice gains in storage, which gave the highest (14.08)benefit cost ratio (BCR) than phostoxintablet (5.25).