Seed dressing with carbosulfan for the management of parasitic nematodes on groundnut

Carbosulfan 25 ST seed dressing @ 1, 2, 3 and 4 per cent for pot experiment while 2 and 3 per cent was used under field conditions against root-knot and parasitic nematodes respectively. Seedling emergence was not affected by the nematicidal seed dressing except at 4 per cent where the germination was suppressed upto 50 per cent in pots. Dressing with carbosulfan was found to be effective with respect to plant growth of groundnut in pots as well as under field conditions at lower doses used. 2 per cent treatment, not only increased the pod yield upto 8.7 per cent over control but also significantly lowered the nematode population of Tylenchorhynchus vulgaris, T. mashhoodi and Pratylenchus zeae sampled at the time of harvestiig. Hoplolaimus indicus was markedly low at harvest as compared to contrd treatment. Conclusively, seed dressing of groundnut with carbosulfan had improved the plant growth and significantly reduced the nematode population in pots and under field conditions.