Field crops (grain corn and soybeans) are grown on over 800,000 ha in Québec. They are a big source of farm income but also account for most of the glyphosate-based herbicide (GBH) used in the province. Maintaining high field crop yields while drastically reducing use of GBH is strategically important if this sector is to remain prosperous and sustainable.
The aim of the project is to assess the impact of applying various rates of glyphosate in field crop systems on the soil and crop rhizosphere microbiome. This IRDA project covers one aspect of a broad interdisciplinary study led by Dr. Marc Lucotte at UQAM. The purpose of the NSERC-funded study is to provide an overall picture of the massive use of GBHs in a variety of conventional field crop systems and systems with a permanent plant cover requiring very few GBH applications. The IRDA study will consist of taking microbiome samples in the field in two of Québec’s climatic zones and in research plots run by SCV Agrologie.
From 2017 to 2021
IRDA’s involvement in this project will lead to a reduction in the use of glyphosate herbicides.
Natural Sciences and Engineering Research Council of Canada | Université du Québec à Montréal | SCV Agrologie
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.
Researchers: Aubert Michaud, retraité Luc Belzile
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.