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 Michaud, retraitéMichaud, 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
The goal of the project is to improve biological methods for controlling the cabbage seedpod weevil in canola crops. In this project, initiated by Agriculture and Agri-Food Canada and conducted in Québec by UQAM, IRDA is performing an economic analysis of the practices under study.
Researcher: Luc Belzile
The purpose of this project was to study the vegetative propagation and regeneration capacity of Canada thistle and sow thistle with a view to developing effective weed control strategies.
Researcher: Maryse Leblanc
Project to restore the rainbow smelt spawning grounds at the mouth of Rivière Boyer on the St. Lawrence River.
Researchers: Aubert Michaud, retraité Luc Belzile