Studies on the effect of Allelopathic properties of some weed and medicinal plants

Abstract

Pot experiment was conducted to analyse the allelopathic properties of some weed and medicinal plants leaf extract on galling, larval penetration and development of Meloidogyne incognita on brinjal plant. Studies show that larval penetration, root galling, soil nematode population, total root population and nematode multiplication factor decreased in comparison to control in all concentrations. All the treatments were found significantly deferent from each other. The highest percentage larval penetration, galling, soil population, root population and nematode multiplication reduced significantly at 10 per cent leaf extract level followed by 5.0, 2.0 and 1.0 per cent leaf extract in descending order. Among the treatments Parthenium hysteriophorus was found most effective in reducing the nematode population.