Green Global
Foundation   Journal
...an emerging window for scientific research and publication across the globe

REPELLENT EFFECT OF SOME INDIGENOUS PLANT EXTRACTS AGAINST SAW-TOOTHED GRAIN BEETLE, Oryzaephilus surinamensis (L.) (Pages : 51 - 54)

The study was conducted in the laboratory of the Department of Entomology, Bangladesh Agricultural University, Mymensingh. Leaves of six indigenous plants viz., Typhonium trilobatum, Cleome viscosa, Cassia occidentalis, Pongamia pinnata, Mesua ferrea, and Trewia nudiflora were extracted using acetone, ethanol and water solvents. These extracts were evaluated for their repellent effect against Oryzaephilus surinamensis (L.) at 2.5, 5.0, 7.5, and 10.0% concentrations. Three replications were used for each dose of all the plant extracts and examined in petridishes. Extracts of water solvent showed higher repellent effect than that of others except ethanol extract of M. ferrea. Considering mean repellency rate, extracts of three solvents of all six plants were in the same repellency class i.e. class II except water extract of P. pinnata (class III). It was found that the rate of repellency increased with the increase of dose level. At 10.0% dose level all plant extracts showed the highest repellency rate and were in repellency class III. Download