Insecticidal Activity of Bioactive Compound: 2H-Furo [2, 3-H]-1-Benzopyran-2-One, Isolated Form Seeds of Psoralea Corylifolia L against Sitophilus Oryzae

Insecticidal activity of the bioactive compound 2H-Furo[2,3-H]-1-benzopyran-2-one isolated from the seeds of P. corylifolia against S. oryzaewas observed at 1000ppm and 1500ppm concentration .50% of the seeds gotinfected by insects at 250 and 500ppm concentration. The number of insectsgradually increased with increase in storage period from 0 to 120 days. Intreated seeds at 1000 and 1500ppm concentration complete inhibition ofinsects was observed without altering the nutritive value. At 250 and 500ppmconcentration, significant insecticidal activity was observed. Hence thepercent mortality was increased with increase in concentration withoutbiodeterioration