A pot culture experiment was conducted to find out the effect of different inoculum levels of nematode on the plant growth and nematode multiplication on okra plant. Findings revealed that significant reduction occurred in plant growth parameters viz., shoot length, root length, fresh shoot and root weight, dry shoot and root weight of plant inoculated with 1000 juveniles and above per pot. The highest gall index and egg masses were also recorded at inoculums levels of 1000 and 10000, respectively. Nematode population in soil increased progressively with an increase in nematode inoculum level from 10 to 10000 J 2 / kg of soil. Maximum population was recorded at inoculum level of 10000 J 2 / kg of soil followed by 1000 J 2 / kg of soil which were statistically at par. The reductions in growth parameters and nematode infestations were found to be directly proportional to the inoculums level. Considering the spectacular decline in plant growth parameters and steep rise in number of galls and eggmasses in infected roots caused by Meloidogyne incognita at the inoculum level of 1000 J 2 /kg soil and above, so it is considered that 1000 J 2 M. incognita /kg soil happened to be damaging the thresh hold in okra. How to view point the article : Mahalik, J.K. and Sahoo, N.K. (2016). Effect of inoculum density of root knot nematode (Meloidogyne incognita) on okra (Abelmoschus esculentus L.).

No abstract

A pot experiment was carried out in the net house of Department of Nematology, OUAT, Bhubaneswar, Odisha, India during June to August, 2017 on the application of oilcakes (mustard cake and neem cake) and bio-agents (Trichoderma viride, Glomus fasciculatum, Rhizobium leguminosarum) each alone and in combination for the management of root knot nematode (Meloidogyne incognita) in green gram. Result of the experiment indicated that soil application of mustard or neem cake @ 50 g m-2 with AM fungus (Glomus fasciculatum) @ 5 g m-² and seed treatment of Rhizobium @ 25 g kg-1 of green gram seed declined the root knot nematode population, number of galls plant-1, number of eggmass plant-1and root knot index with corresponding increase of plant growth parameters and chlorophyll content in green gram plant as compared to other treatments and untreated check. But integration of mustard cake @ 50 g m-2 at 2 weeks prior to sowing with AM fungus @ 5 g m-2 at 10 days before sowing and seed treatment of Rhizobium @ 25 g kg-1 green gram seed exhibited the lowest M. incognita population 200 cc soil-1 (153.33 J2), number of galls plant-1 (7.0), number of eggmass plant-1 (2.0) and root knot index (2.0) reflecting enhancement of plant growth parameters, number of pods (206.67%), number of nodules (691.17%) over untreated check. This integrated management module also recorded maximum increase in the availability of NPK content in soil and chlorophyll content as compared to other treatments.

No abstract

No abstract