Persistence and nematicidal activity of aldicarb sulfone 7S per cent W.P., applied as foliar spray on cowpea at the rate of 1.25 and 2.5 kg a.i./ha, were evaluated under field conditions. Aldicarb sulfone was found to be translocated basipetally from foliage to roots in enough quantities to provide some protection against the major root infesting nematodes viz, Meloidogyne incognita, Rotylenchulus reniformis, Hoplolaimus indicus, Helicotylenchus delhiensis and Tylenchorhynchus vulgaris. The residues persisted upto 60 days in shoot and 30 days in root. The residues were also translocated into the green pods and were detected in all the pickings upto 90 days of application. The residues in the pods varied between 0.016 and 0.035 ppm depending upon the time lapse and rate of application.
Aldicarb sulfone, persistence, nematicidal activity, Vigna unguiculata, Meloidogyne incognita, Rotylenchulus reniformis, Hoplolaimus indicus, Helicolylenchus delhiensis, Tylenchorynnchus vulgaris
