Pathogenic effect of Root knot nematode, Meloidogyne javanica on Okra (Abelmoschus esculentus L. Moench)

Okra is an important vegetable crop cultivated in various states of India. The root knot nematode is the most harmful disease causing agent in okra. An experiment was conducted to assess the pathogenicity of M. javanica on okra at different inoculum level (0, 10, 100, 1000, 10000 J₂/plant). The significant reduction was shown in plant growth parameter (viz; shoot length, root length, shoot weight, and root weight) with increase the nematode inoculum level while, the nematode population were significantly increased. The Lowest plant growth parameters and highest nematode gall index were observed in 10000 J₂/plant simultaneously.