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Dinitrogen fixation, herbage yield, and rhizobial preference of selected alfalfa clones



Dinitrogen fixation, herbage yield, and rhizobial preference of selected alfalfa clones



Crop Science 24(6): 1093-1097



N2 fixation was investigated over 4 years (1977-1980) in 12 field-grown clones of Medicago sativa initially selected from adapted germplasm. While rates of N2 fixation, as measured by the 15N isotope dilution method, varied substantially among clones in each year, 3 clones consistently ranked high across years, and 3 clones ranked low. Performance of the remaining clones showed considerable variation with year of growth.

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Accession: 001336765

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