Taking a soil sample. Photo: Nutrien Ag Solutions video screengrab

How to succeed at 4R fertilizer management on your farm

Agronomy Management: The “right” approach for on-farm nutrient management and fertilizer varies from region to region in Western Canada

4R nutrient management must be farm-specific — geared for the unique crops, cropping practices, soils and climatic conditions of that farm, researcher Ross McKenzie writes.


Photo: konradlew/istock/getty images

Still hard to predict precise fertilizer payback

Despite decades of precision agriculture advances, international research finds no clear way to predict where and when adding nutrient through fertilizer will fail to boost growth

Despite decades of advances, international research finds no clear answer for where and when adding nutrient will fail to boost growth.

Manitoba Agriculture's Manasah Mkhabela at Arborg, Man. in July 2025, discussing trials he's conducting with University of Manitoba soil scientist Mario Tenuta to find the sweet spot for nitrification inhibitors. Photo: Don Norman

How much nitrogen can farmers really cut?

Manitoba fertilizer trials search for the the sweet spot where farmers can cut nitrogen rates, with a nitrification inhibitor, without harm to yield

Manitoba fertilizer trials look for nitrification inhibitor sweet spot, to lower greenhouse gas emissions and cost without hurting yield.


OECD subsidy chart

OECD lauds Canada’s low farm subsidies, except supply management

The Organization for Economic Co-operation and Development says Canada’s farm subsidies are among the lowest, but still criticized supply management industries like dairy, poultry and eggs

The Organization for Economic Co-operation and Development says Canada’s farm subsidies are among the lowest, but still criticized supply management industries like dairy, poultry and eggs.

Organic farmers do not soil test as much as conventional farmers do, but it’s important to understand the nutrient levels in all soils used for crop production.

Fall soil testing tips for smart fertilizer plans

Quality 2026 crops start with quality soil test data, which starts with Manitoba farmers using the best possible soil sampling practices in fall 2025

Quality crops next year start with quality soil test data, which starts with Manitoba farmers using the best possible soil sampling practices in fall 2025



McGill University researcher Anjaly Paul says that converting farm waste into biogas and organic fertilizer through anaerobic digestion could provide farmers with additional income and support Canada’s net-zero emissions goals.

Biogas pitched to turn farm waste into renewable energy

Anaerobic digestion can convert manure and other agricultural waste into renewable energy as well as fertilizer, but Manitoba farmers don’t have the best history with the technology

Anaerobic digestion can convert manure and other agricultural waste into renewable energy as well as fertilizer, but Manitoba farmers don’t have the best history with the technology


Crop rotation and nutrition were singled out for their potential to increase canola yield during the Canola Council of Canada’s 2024 surveys. Photo: File

One change to improve Prairie canola yield

Crop rotation and nutrition topped the list for both Canadian farmers and agronomists

A Canola Council of Canada has surveyed growers on their production practices and found rotation and nutrient management key to increasing yields.