CONTROL OF ROOT-KNOT NEMATODE BY BARE-ROOT DIP IN UNDECOMPOSED AND DECOMPOSED EXTRACTS OF NEEM CAKE AND LEAF

Abstract

Both decomposed and undecomposed extracts of neem cake and leaves as bare-root dip treatment caused significant reduction in root-knot development of pre-infected tomato seedlings as well as those inoculated with 2nd stage juveniles of Meloidogyne incognita after dip treatment. Inhibition in root-knot development was, however, more pronounced in preinfected seedlings than in seedlings inoculated after dip treatment. Decomposed extracts were comparatively more effective than undecomposed extracts and oil cake extracts more effective than leaf extracts.