Citation
O'Connor GE , Evans J , Fettell NA , Bamforth I , Stuchberry J , Heenan DP Chalk PM (1993) Sowing date and varietal effects on the N2 fixation of field pea and implications for improvement of soil nitrogen. Australian Journal of Agricultural Research 44, 151-163.
https://doi.org/10.1071/AR9930151
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