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
This project was carried out by Club agroenvironnemental de l’Estrie and IRDA was in charge of conducting the economic analysis.
Researcher: Luc Belzile
Demonstration project to showcase the ability of undersown clover cover crops to reduce nitrogen fertilizer requirements in crops.
Researcher: Marc-Olivier Gasser
Canola and wheat (wheat-corn-canola rotation) were planted in 2016 and 2017, respectively, on 12 experimental plots with tillage practices on the main plots (minimum tillage and chisel plow) and fertilization methods (mineral fertilizers, 25 m3/ha of pig manure and 50 m3/ha of pig manure) in the subplots.