Organic amendments for the control of root-knot nematode on Phaseolus mungo

The different organic amendments were observed to suppress the reproduction and population build up of Meloidogyne incognita on Phaseolus mungo and also improved plant growth. The growth was found to be maximum in neem oil cake treated infected plant. The impact of pathogenesis is reflected at tissue level with low sugar and elevated phenol and protein levels in the infected plant. The activities of dehydrogenases and endogenous reductases were more in the infected plant under different organic amendments treatment albeit the efficiency of different organic amendments in controlling the nematode population and improving the plant growth was in the following order: Neem cake> Groundnut cake and Neem cake> Cauliflower leaf extract> Groundnut cake.