Residues of Pendimethalin in Soil and Radish

Field experiment was conducted to study the residues of pendimethalin in edible parts of radish and its persistence in soil. At harvest in both the seasons of winter and summer more than 98per cent of initial deposit of pendimethalin was dissipated and observed half life in radish field was 6.45 days and 10.03 days for pendimethalin applied as pre emergence @ 0.5 and 0.75 kg a.i. ha^-1, respectively. In radish tubers the detected residues of pendimethalin were 0.0026 mg kg^-1 and 0.0063 mg kg^-1 during winter season and 0.0027 mg kg^-1 and 0.0056 mg kg^-1 when pendimethalin applied at 0.5 and 0.75 kg a.i. ha^-1, respectively.