Mario Tenuta (B.Sc., M.Sc., Ph.D.), P.Ag., is the Natural Science and Engineering Council/Western Grains Research Foundation/Fertilizer Canada Senior Industrial Research Chair in 4R Nutrient Stewardship and Professor of Applied Soil Ecology at the University of Manitoba. His training includes a B.Sc. in Botany and Physical Geography (Toronto), an M.Sc. in Soil Fertility (Guelph), a Ph.D. in Plant Pathology (Western), and Post-Doctoral research in Plant Nematology (UC Davis). The 4R Industrial Research Chair Program is advancing research in nitrogen fertilizer management practices to give farmers and the agricultural industry solutions to achieving nitrous oxide (N2O) emission reductions and improved soil health and crop productivity. A key feature of the Chair program is conducting farm-based research with particular attention to the outreach of findings to farmers, industry and policy-makers to achieve national target reductions in emissions of N2O and position towards a path of net-zero food production.