Pathogenicity of root-knot nematode, Meloidogyne incognita and rootrot fungus, Rhizoctonia solani on okra [Abelmoshcus esculentus L.].

A pathogenicity test was conducted against root-knot nematode, Meloidogyne incognita and root rot fungus, Rhizoctonia solani on okra (Abelmoschus esculentus). The results showed that with the increase in the inoculum of M. incognita i.e. from 250-8000 J₂/plant and R. solani from 0.25 - 8.0 g mycelial mat/plant caused reduction in plant growth parameters viz., length, fresh weight and dry weight. The highest reduction in plant growth parameters was recorded in the plants inoculated with the 8000 J₂/kg of M. incognita and 8.0 g mycelial mat of R. solani/plant of fungus whereas the least reduction was recorded in 250 J₂/plant of nematode and 0.25g mycelial mat/plant. However the significant reduction in plant growth parameters was recorded in the plants inoculated with at and above 2000J₂/kg and 2g mycelial mat/plant of nematode (M. incognita) and fungus (R. solani) respectively. So these levels were pathogenic level. [ABSTRACT FROM AUTHOR]