1. Agriculture and Agri-Food Canada; Soils and Crops Research and Development Centre; 2560 boul. Hochelaga Québec QC Canada G1V 2J3
2. Agriculture and Agri-Food Canada; Dairy and Swine Research and Development Centre; 2000, rue Collège, C.P. 90 Sherbrooke QC Canada J1M 1Z3
3. Institut de Recherche et Développement en Agroenvironnement; 2700, rue EInstein Québec QC Canada G1P 3W8