author(s)
Sujit Kumar Behera, Anukiran Sahu, Niranjan Das and Anita Kumari Ujjwal

abstract
To achieve the eco-friendly management practices inclusion of Brassicaceae crops in cropping systems is one such alternative in management of nematode in okra. With this background, a pot culture experiment was carried out in the net house to assess the effect of two bio-fumigants viz. Cabbage and Cauliflower leaf on plant parasitic nematode population infecting okra crop and its effect on soil nutrient status. Plant parasitic nematodes viz. Root knot nematode, Meloidogyne incognita (218.3J2/200cc soil), Lance nematode, Hoplolaimus indicus (56.6 /200cc soil), Spiral nematode, Helicotylenchus dihystera (42/200cc soil) and Stunt nematode, Tylenchorhynchus mashoodi (17.3/200cc soil) and initial nutrient status of soil was nitrogen (313kg/ha), phosphorus (21kg/ha) and potassium (237kg/ha). The bio-fumigation experiment was conducted by mixing chopped leaves of cabbage and cauliflower@ 2.5kg and 5.0kg/m2 each (44g and 88g/kg soil in 15cm diameter earthen pot) and covering the pots for 15 days with a thin polythene sheet along with a chemical check carbofuran@ 1.0kg a.i./ha and a untreated control were maintained for comparison. The experiment resulted in reduction of parasitic nematode population like root knot nematode (40-78%), lance nematode (40.8-80.1%), spiral nematode (49.1-79.7%) and stunt nematode (40.8-81.3%). Further, bio-fumigants enhanced the nutrient content of the soil; nitrogen (11.5-33.5%), phosphorus (1.1-30.9%) and potassium (11.5-43.6%) leading to better plant growth with encouragement of growth of saprophytes in soil (61.2-76.3%) resulting in reduced multiplication of post plant parasitic nematodes. Both cabbage and cauliflower were found to be at par with respect reduction of nematode population and enhancement of plant growth parameter. However, Cabbage leaf @ 5.0kg/m² exhibited the better performance in all above aspect as compared to other treatments.