Measurements of nitrogen fixation in fababean at different N fertilizer rates using the 15N isotope dilution and ‘A-value’ methods

1991 ◽  
Vol 131 (2) ◽  
pp. 161-168 ◽  
Author(s):  
G. Hardarson ◽  
S. K. A. Danso ◽  
F. Zapata ◽  
K. Reichardt
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