Article : Pathogenic Potential Of Root Knot Nematode, Meloidogyne Incognita And Wilt Fungus, Fusarium Oxysporum F. Sp. Vasinfectum Alone And In Combination On The Disease Development And Plant Growth Of Okra, Abelmoschus Esculentus

Title

Pathogenic Potential Of Root Knot Nematode, Meloidogyne Incognita And Wilt Fungus, Fusarium Oxysporum F. Sp. Vasinfectum Alone And In Combination On The Disease Development And Plant Growth Of Okra, Abelmoschus Esculentus

Author

Syed Abuzar

Studies were made to determine the effect root-knot nematode, Meloidogyne incognita and wilt fungus, Fusarium oxysporum f. sp. vasinfectum alone and in combinations on the growth of Abelmoschus esculentus. Experiment was conducted under green house conditions [(25±3) °C and (58±6) % RH] and terminated seventy-five days after inoculation. Results indicated that the inversely proportional relationship between initial inoculum densities (Pi) of M. incognita / F. oxysporum f. sp. vasinfectum and plant length, fresh and dry weights. Reduction in all growth parameters was observed significantly (P≤0.05) at minimum Pi (500 J2/pot of M. incognita and/or 0.5 ml of F. oxysporum f. sp. vasinfectum spore suspension with 108 cfu/ml) of both the pathogens. Relationship between final nematode population / root-knot index and Pi was observed directly proportional. Simultaneous inoculation of both the pathogens increases the severity of disease followed by nematode and fungus alone.

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