1. Bole, J B and Dubetz, S 1986 Effect of irrigation and nitrogen fertilizer on the yield and protein content of soft white spring wheat. Can. J. Plant Sci. 66, 281?289.
2. Bremner, M 1965 Total nitrogen, and inorganic forms of nitrogen. In Methods of Soil Analysis. Part 2: Chemical and Microbiological properties. Ed. C A Black pp 1149?1237. Am. Soc. Agron., Madison, WI.
3. Canada Grains Council 1982 The soft white spring wheat industry in Canada. Canada Grains Council, Winnipeg, Man. pp 58?61.
4. Canadian Grain Commission 1983 Official Canadian grain grading guide. Canadian Grain Commission, Winnipeg, Man. 24 p.
5. Carefoot, J M, Bole, J B and Entz, T 1989 Relative efficiency of fertilizer N and soil nitrate at various depths for the production of soft white wheat. Can. J. Soil Sci. 69, 867?874.