Nematicidal efficacy and plantgrowth as influenced by persistence of sebuphos in soil and brinjal plant

Under pot conditions, with ‘Pusa Bheraw’ brinjal, Solanum melongena (L.) as a test crop, the residue of sebuphos applied @ 0.5, 1.0 and 1.5 kg a.i/ha, persisted in soil and plant beyond 2 months. The chemical showed a half-life of about 7–8 days in soil. Absorption of residue by roots was rapid but further translocation into shoots was slow. The residue level was found to be always higher in roots than shoots despite a faster dissipation in roots. Both root and soil concentrations of residuessignificantly (p < 0.05) reduced invasion, development, fecundity and final population of Meloidogyne incognita in brinjal. Application of sebuphos @ 1.0 kg a.i./ha was found to be the best for its nematicidal action and effect on plant growth.