Management of plant parasitic nematodes in Okra by Bio-fumigation

Abstract

A pot culture study was carried out to assess the effect of two bio-fumigants viz. Cabbage and Cauliflower leaves on plant parasitic nematode population infecting okra. The experiment resulted in reduction of root knot nematode (40.7%), lance nematode (40.8–80.1%), spiral nematode (49.1–79.7%) and stunt nematode (40.8–81.3%) with improvement of plant growth parameters like shoot length (23.3–54.6%), root length (14.1–46.5%), fresh shoot weight (28.4–81.9%), fresh root weight (22–38.7%), dry shoot weight (11.6–85.7%) and dry root weight (24–39%) of okra plant as compared to untreated control. Both cabbage and cauliflower leaves were found to be at par with respect to reduction of nematode population and enhancement of plant growth parameters. However, Cabbage leaf @ 88 g/kg soil (5.0 kg/m2) exhibited better performance in all above aspects. It reduced the population of root knot nematode, lance nematode, spiral nematode and stunt nematode by 50%, 52.4%, 61.2% and 50.9%, respectively. The enhancement of shoot length, root length, fresh shoot weight, dry shoot weight, fresh root weight and dry root weight to the tune of 49.3%, 46.5%, 79.3%, 78.5%, 38.7% and 39.5%, respectively were observed with this treatment.