DOI: 10.36347/sajb.2023.v11i07.003

Pages: 244-248

The contact and gustatory effects of Spinosad on development, survivability, adult emergence and reproductive potential of Cryptolestes pusillus (Schon.) in two successive generations were conducted. Egg hatching, larval and pupal survivability, and adult emergence were lowest in wheat and rice in 1st generation, whereas, totally controlled the hatching, larval and pupal survivability and adult emergence of C. pusillus was noticed in both the seeds in 2nd generation at 0.63 and 1.25 μg/ml concentrations. The highest PRC value of adult emergence was 97.93% found in wheat and 100% in rice in 2nd generation. The mean developmental period of C. pusillus varied in different concentrations of Spinosad. The highest duration of hatching, larval and pupal periods were observed in treated Spinosad at 1.25μg/ml in wheat in F1 generation, whereas, total control of development was found in F2 generation in the same concentration.