Estimation of nitrogen fixation by Trifoliumsubterraneum L. and Medicago truncatula gaertn. grown in pots using a non-destructive acetylene reduction assay

1982 ◽  
Vol 14 (5) ◽  
pp. 495-500 ◽  
Author(s):  
P. Hopmans ◽  
L.A. Douglas ◽  
P.M. Chalk
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