Research Projects

Each year, IRDA's R&D Team conducts more than one hundred research projects in sustainable agriculture. What's more, IRDA is working with Quebec's key agricultural stakeholders to find concrete solutions.

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Results for Fertilizer management
Potato field
2017-2019 • Market gardening

Combining slow release and conventional nitrogen fertilizer to reduce leaching and stabilize annual potato yields

Meeting nitrogen requirements mainly through the use of a highly stable form of fertilizer can minimize nitrogen losses, provide nitrogen amounts closer to the plant’s actual needs.

Researcher: Christine Landry

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Christine Landry
Strawberry field
2015-2017 • Fruit production

Developing a cropping system that focuses on improving soil health to restore the yield potential of matted row strawberry fields with a history of strawberry decline

A cropping system based on adding organic matter through soil amendments and organic fertilizers can restore soil health and strawberry yields by limiting the occurrence of disease symptoms.

Researcher: Christine Landry

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Christine Landry
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

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Caroline Côté
Green manure
2014-2017 • Market gardeningField crops

Effect of legumes, manure, and compost on soil nitrogen dynamics and microbial diversity under organic production

Using a split-split-plot design, this study tested three variables: soil tillage, crop rotation in organic production, and fertilization with manure or compost.

Researcher: Caroline Côté

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Caroline Côté
Strawberries
2013-2018 • Fruit production

NPK trials for strawberries on mineral soils in Québec

The data generated by this project was used to develop a new NPK fertilization chart that reflects technical, agronomic, and environmental issues.

Researcher: Christine Landry

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Christine Landry
Beetroots
2013-2018 • Market gardening

NPK fertilizer trials for beets on mineral soils in Québec

This project was aimed at determining the nutrient needs of beets based on soil texture and phosphorus and potassium levels under Québec growing conditions.

Researcher: Christine Landry

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Christine Landry
Barley
2013-2017 • Field crops

NPK fertilizer trials on barley on mineral soils in Québec

The aim of this project was to gather data on the nutritional requirements of barley to better equip producers, extension agents, and other industry stakeholders.

Researcher: Christine Landry

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Christine Landry
Oat field
2013-2017 • Field crops

NPK fertilizer trials for oat crops on mineral soils in Québec

The aim of this project was to gather data on the nutritional requirements of oats to better equip producers, extension agents, and other industry stakeholders.

Researcher: Christine Landry

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Christine Landry
Laying hens
2016-2018 • Livestock production

Revising the nutrient balance sheet for estimating phosphorus loading in laying hen production

This project was set up to test the nutrient balance sheet method as a tool for estimating phosphorus output from pullets and laying hens.

Researcher: Marc-Olivier Gasser

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Marc-Olivier Gasser
Laying hens
2017-2019 • Livestock production

Field tests on the nitrogen efficiency coefficient and nitrogen release period of pelleted laying hen manure on grain corn and oat crops

This project will determine the nitrogen efficiency coefficient (EC) of pelleted laying hen manure, a source that is interesting an increasing number of growers, both organic and conventional, because of its efficiency.

Researcher: Christine Landry

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Christine Landry
Tomatoes

Revising the MAPAQ fertilization reference charts

IRDA—in its capacity as the authorized representative tasked with revising the MAPAQ fertilization reference charts—will plan, coordinate, and monitor all activities involved in updating these charts.

Researcher: Christine Landry

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Christine Landry
Plasticulture

Banded controlled-release and conventional fertilizer in horticultural production under plastic mulch

The aim of this project was to field-test sound irrigation practices and band application of various types of fertilizers at ridging time to eliminate fertigation and increase the efficiency of fertilizer and water use under plastic mulch.

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Carl Boivin
Christine Landry
Green manure
2016-2018 • Field crops

Effectiveness of an annual vs. end-of-season legume green manure crop in increasing soil resilience and providing sufficient nitrogen

The project compared the nitrogen uptake effects of green manure crops grown for a full season, in association with a main crop, or after it is harvested.

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Aubert Michaud
Marc-Olivier Gasser
Maryse Leblanc
Blueberry Field
2015-2016 • Fruit production

Productivity of healthy looking plants that have never received nitrogen fertilizer and that are located in a blueberry field infected by stunt disease

In highbush blueberry fields where stunt disease has been detected, plants that have never received nitrogen fertilizer are more vigorous and homogeneous than plants that have received nitrogen fertilizer.

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Carl Boivin
Christine Landry
Organic corn
2015-2018 • Field crops

Developing a nitrogen fertilization program based on green manure supplemented by a manure-based starter fertilizer in organic grain production

In a wheat/grain corn/soya rotation, green manure can be used to obtain profitable organic grain corn yields while limiting phosphorus pollution.

Researcher: Christine Landry

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Christine Landry

The solutions developed by IRDA aim to...

Ensure the sustainability

and quality of soil, water, and air

Protect the health and well-being

of local communities by improving the quality of crop and livestock production, with an emphasis on animal welfare

Safeguard the economic viability

of crop and livestock production