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. Crop and Pasture Science 44, 151-163.
https://doi.org/10.1071/AR9930151
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