EFFECT OF DIFFERENT INOCULUM LEVELS OF MELOIDOGYNE INCOGNITA ON THE GROWTH OF PEA IN THE PRESENCE AND ABSENCE OF RHIZOBIUM

Z. A. Siddiqui, I. Mahmood, M. A. Ansari

Abstract


Effect of five different inoculum levels (500, 1000, 2000, 4000 and 8000 juveniles) of Meloidogyne incognita were studied in the presence and absence of Rhizobium on Pisum sativum. Progressive decrease in plant growth was observed with the increase in the inoculum level of M. incognita but the damage caused by nematodes was more in unbacterized plants than in bacterized ones. The damage threshold level of M. incognita was found to be 1000 juveniles per kg soil in unbacterized plants and 2000 juveniles in bacterized plants. Nematode multiplication was density dependent. Nematode multiplication was reduced in present of Rhizobium.

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