COMPARATIVE PERFORMANCE OF INDIGENOUS AND EXOTIC RHIZOBIAL STRAINS ON THE GROWTH AND YIELD OF LENTIL

Abstract

Rhizobia, the Gram negative soil bacteria, form root nodules with lentil and influence its growth and yield. We evaluated the ability of the selected rhizobial strains on growth and yield of lentil at high Ganges river floodplain soils of Bangladesh under field conditions. The field experiment included nine treatments- three indigenous rhizobial strains (BLR26, BLR175 and BLR235), two exotic strains (nifTAL638 and nifTAL640), two mixed cultures, one fertilizer-nitrogen treatment and a control. Lentil seeds were inoculated with rhizobial strains as per the treatments and planted. Inoculation of lentil with indigenous strains BLR26 and BLR175 recorded higher grain yields over all other treatments except fertilizer-nitrogen application. Inoculation of indigenous mixed strains also resulted significantly higher lentil grain yield over the exotic strains. Thus, indigenous strains BLR26 and BLR175 can be used for lentil cultivation for improving nodulation, growth and yield of lentil at high Ganges river floodplain soils of Bangladesh.

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