This project seeks to improve crop water supply and even limit topsoil nutrient runoff into waterways through the improved management of subsurface drainage systems. This will involve the installation of control units at the drain collector outlets. Our approach relies on the continuous measurement of field water table heights; water exports; as well as sediment, nitrogen, and phosphorus runoff into drains at four field-crop production sites in Montérégie. We will supplement our assessment of the controlled drainage trial results from these four sites with crop yield data. This will allow us to fine tune the system to yield optimal agronomic, economic, and environmental benefits.
From 2019 to 2022
Controlled drainage can reduce nutrient runoff into waterways.
Ferme Astral | Groupe Pro-Conseil | Les Semis 2000 Plus | Ministère de l'Agriculture, des Pêcheries et de l'Alimentation
Scientific article • Aubert MichaudMichaud, A., S.-C. Poirier., J. Whalen. 2019. Tile Drainage as a Hydrologic Pathway for Phosphorus Export from an Agricultural Subwatershed. Journal of Environmental Quality. 48(1) p. 64-72 Michaud, A., S.-C. Poirier., J. Whalen. 2019. Tile Drainage as a Hydrologic Pathway for Phosphorus Export from an Agricultural Subwatershed. Journal of Environmental Quality. 48(1) p. 64-72 Download Download
Ten test sites will operate over a two-year period on farms spread over ten Québec regions to compare the performance of winter and spring cereals.
The Rivière de la Roche sub-watershed has one of the highest phosphorus and sediment export rates of the entire Missisquoi Bay watershed—a particularly challenging situation for the local agricultural sector.
Researcher: Aubert Michaud