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EVALUATION OF RHIZOBIUM LEGUMINOSERUM (BV. PHASEOLI) STRAINS IN AN ACID ICEPTISOL FOR N-FIXING ABILITY IN FRENCHBEAN UNDER TEMPERATE REGION OF HIMALAYA

Gopal Krishna Dwivedi

Affiliations

¹Hill Campus, G.B. Pant University of Agriculture & Technology, Ranichauri, Tehri Garhwal - 249 199, India

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Cite article:- Dwivedi Krishna Gopal (2025). EVALUATION OF RHIZOBIUM LEGUMINOSERUM (BV. PHASEOLI) STRAINS IN AN ACID ICEPTISOL FOR N-FIXING ABILITY IN FRENCHBEAN UNDER TEMPERATE REGION OF HIMALAYA. Legume Research. 30(4): 279 - 282. doi: .

ABSTRACT

Ten strains of Rhizobium leguminoserum (bv. Phaseoli) were evaluated to asses the N-fixing ability in an acid inceptisol in terms of N-assimilation, N-uptake and relative effectiveness as compared to fertilizer N. Strains SSF48, SSF55, SSF72 and SSF73 have been found promising for French bean in acid inceptisolof temperate region. These were also superior to 40 kg N/ha to have better nodulation, plant dry matter and grain yield and at per with respect to N-assimilation and uptake by plants. Highest grain yield of 18.4 q/ha and N-uptake (2.293g/pl) was recorded with the strain SSF69 followed by SSF73. Relative effectiveness of strain as compared to 40 kg N/ha was also recorded highest with same strains. N-assimilation, uptake plant dry matter and grain yield were significantly and positively correlated with nodulation indicating synergistic effect of inoculation. The relative effectiveness of the strains followed the order as: SSF69 > SSF73 > SSF70 > SSF50 > SSF72 > SSF55.

KEYWORDS

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