Particulate organic matter and soil mineral nitrogen concentrations are good predictors of the soil nitrogen supply to canola following legume and non-legume crops in western Canada

Department of Natural Resource Sciences, Macdonald Campus, McGill University, 21, 111, Lakeshore Road, Ste-Anne-de-Bellevue, Quebec, Canada H9X 3V9; Soils and Crops Research and Development Centre, Agriculture and Agri-Food Canada, 2560 Hochelaga Blvd., Quebec City, Quebec, Canada G1V 2J3; Potato Research Centre, Agriculture and Agri-Food Canada, 850 Lincoln Road, PO Box 20280, Fredericton, New Brunswick, Canada E3B 4Z7; Brandon Research Centre, Agriculture and Agri-Food Canada, PO Box 1000A, R.R. #3, Brandon, Manitoba, Canada R7A 5Y3; Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, 960 Carling Ave, Ottawa, Ontario, Canada K1A 0C6; Indian Head Research Farm, Agriculture and Agri-Food Canada, R.R. #1 Gov Road, PO Box 760, Indian Head, Saskatchewan, Canada S0G 2K0; Lethbridge Research Centre, Agriculture and Agri-Food Canada, 5401 1 Avenue South, PO Box 3000, Lethbridge, Alberta, Canada T1J 4B1; Saskatoon Research Centre, Agriculture and Agri-Food Canada, PO Box 10, Scott, Saskatoon, Saskatchewan, Canada S0K 4A0; and Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C and E Trail, Lacombe, Alberta, Canada T4L 1W1. Received 28 January 2013, accepted 3 September 2013. Published on the web 11 September 2013.