author(s)
Manish Kumar Yadav, Ram Kumar, Shiv Prakash and RB Singh

abstract
A total number of eight chemical seed protectants namely emamectin benzoate (Proclaim 5SG) @2ppm (40.0mg/kg seed), spinosad (Tracer 45SC) @2ppm (4.4mg/kg seed), indoxacarb (Avaunt 14.5SC) @2ppm (13.8mg/kg seed), rynaxypyr (Coragen 20SC) @2ppm (0.01ml/kg seed), chlorfenapyr (Intrepid 10EC) @2ppm (0.02ml/kg seed), profenofos (Curacron 50EC) @2ppm (0.004ml/kg seed), novaluron (Rimon 10EC) @5ppm (0.05ml/kg seed), delltamethrin (Decis 2.8 EC) @1.0 ppm (0.04 ml/kg seed) along with one untreated control were used against C. chinensis under ambient condition were assessed for a period of 9 months to evaluate their ability to maintain toxicity in order to protect seed. The experiment was conducted with the help of the bioassay method of testing pesticidal residues in which the direct exposure method was adopted. The maximum mortality of bruchids was recorded (43.30%) when seed was treated with novaluron 10 EC@0.05ml/kg and followed by emamectin benzoate 5 SG@40mg/kg with 40.00 percent mortality after 9 months of storage.