Maintaining high yields in field crops while reconsidering the option of using glyphosate

Richard Hogue, researcher

Richard Hogue

Researcher

418 643-2380
ext 420

Contact Richard Hogue

Description

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.

Objective(s)

  • Determine the impact of glyphosate and its derivative AMPA on key agricultural functions and the soil and rhizosphere microbiome
  • Determine the ability of permanent plant cover to drastically reduce glyphosate use and compaction and increase nutrient retention and recycling, water retention, carbon sequestration, soil productivity, and the proportion of beneficial microflora
  • Determine what species in the soil and rhizosphere microbiome can reduce the negative impacts of glyphosate and AMPA persistence in the soil

From 2017 to 2021

Project duration

Field crops

Activity areas

Soil health

Service

IRDA’s involvement in this project will lead to a reduction in the use of glyphosate herbicides.

Partners

Natural Sciences and Engineering Research Council of Canada | Université du Québec à Montréal | SCV Agrologie

This may interest you

Green manure
2014-2017 • Field crops

Agronomic and environmental impacts of various types of organic fertilizers and green manures in field crop production

This project evaluated the impact of various corn, soya, and wheat fertilization methods on marketable yields, harvest quality, nitrate losses, and movement of microorganisms potentially pathogenic for humans.

Researcher: Caroline Côté

Read more about the project

Caroline Côté
Peat moss
2013-2017 • Field crops

Developing new techniques to control water table levels in sphagnum farming

The objective of this project was to develop effective techniques for controlling water table levels in sphagnum moss basins. Underground irrigation systems were installed at a number of experimental sites.

Researcher: Stéphane Godbout

Read more about the project

Stéphane Godbout
Corn field
2017-2020 • Field crops

Validation of soil health indicators as a nitrogen uptake prediction tool

The objective of this project is to develop a prediction model for soil nitrogen supplies based on biological soil health indicators.

Researcher: Christine Landry

Read more about the project

Christine Landry