author(s)
Anukiran Sahu, JK Mahalik and SK Behera

abstract
A replicated pot culture experiment was carried out in the net house condition during Rabi, 2017-18 to evaluate the efficacy of oilcakes (Karanja and Mustard oil cakes) as organic amendment at different doses for management of root knot nematode (Meloidogyne incognita) in Indian spinach. Karanja cake (Pongamia pinnata), mustard cake (Brassica rapa) each at three doses @ 0.5, 1.0 and 1.5 t/ha along with neem oilcake @1.0 t/ha as standard check and a untreated inoculated check were taken for the present study. The experiment was laid laid out in Completely Randomized Design with three replications. The result of the present investigation indicated a significant increase in plant growth parameters and decrease in nematode infectivity in all the treatments over untreated check. Among various treatments, Mustard oilcake @ 1.5 t/ha resulted highest increase of plant height (83.2%), root length (85.9%), fresh shoot weight (54.0%), fresh root weight (82.6%), dry shoot weight (90.6%), dry root weight (84.1%) with corresponding decrease in number of root galls (73.2%), number of egg masses (79.1%) and root knot nematode population (75.1%) over untreated check followed by neem oilcake @ 1.0 t/ha. Therefore, application of mustard oilcake @ 1.5 t/ha was considered the most promising management option against root knot nematode (M. incognita) affecting Indian spinach.