DISSIPATION OF MONOCROTOPHOS FROM MUNG BEAN UNDER ARID CONDITIONS

Residues following application of 0.04 and 0.06 per cent monocrotophos on mung bean [Vigna radiata (L) wilezek] crop were estimated for two consecutive seasons at Jodhpur through bioassay method. The insecticid e was found persisting upto three weeks in leaves, while in pods, it l asted for two weeks. Waiting periods of 8 and 7 days were estimated fo r foliage for higher and lower concentrations respectively. On pods, t he waiting periods were found to be 7 days for higher concentration an d 6 days for the lower one. No residues were detected in the grains at harvest.