GFM Network News


MCA urged to help farmers reduce nitrous oxide emissions

MCA urged to help farmers reduce nitrous oxide emissions

Manitoba Crop Alliance (MCA) could help farmers cut nitrous oxide emissions, a potent greenhouse gas, in the future. MCA members passed a resolution calling on the organization to set up an “ongoing Farmer-to-Farmer Soils and Crops Management educational forum to help farmers implement best management practices aimed to reduce nitrous oxide… released from our soils.”

Karen Klassen farms near Manitou with dad George.

N2O study a call to action, say advocates

Farmers for Climate Solutions is calling on the federal government to incentivize reducing N2O emissions

Farmers and the federal government must work together to reduce emissions of greenhouse gas nitrous oxide (N2O), says one advocacy group following the publication of a new study showing global increase in the gas. N2O can ‘gas off’ nitrogen fertilizer applied to fields. “There are many promising ways to reduce nitrogen fertilizer use that are



Researchers from the University of Manitoba presented ‘4R’ research at a self-guided field tour near Carman in late July.

4Rs reduce greenhouse gas emissions

Agriculture is the major emitter of nitrous oxide, researchers say

The 4Rs of nutrient stewardship can decrease emissions of the greenhouse gas nitrous oxide (N2O) anywhere from 20 to 40 per cent, according to research out of the University of Manitoba. “The vast majority of the nitrous oxide that is emitted is from agriculture,” said Mario Tenuta, professor of soil ecology at the University of

Maya Almaraz, a National Science Foundation post-doctoral fellow at UC-Davis and the study’s lead author, samples soils for NOx emissions in Palm Springs, California.

Soils make smog too

California researchers say as much as 40 per cent 
of nitrogen oxides come from fertilizers

Internal combustion engines are typically blamed for smog in urban centres but researchers in California say fertilized fields need to be added to that list. The scientists, from University of California-Davis, say they’ve found about 40 per cent of the nitrogen oxide emissions in the Golden State is coming from fertilized soils in the agriculture-rich


Frozen cropland may be a larger source of nitrous oxide emissions than previously understood.

Frozen soils might be major emitter

A University of Manitoba study has discovered 
the previously overlooked emissions

A new study suggests global greenhouse emission calculations have overlooked an important aspect of the agricultural sector. Emissions, especially of the key gas nitrous oxide, may in fact be about 17 to 28 per cent greater for cultivated soils frozen in winter than currently thought. Mario Tenuta, professor in applied soil ecology at the University

What is 4R Nutrient Stewardship?

What is 4R Nutrient Stewardship?

Manitoba is not like other agriculture areas looking to implement 4R, the room heard during the latest 4R Nutrient Stewardship training workshop in Brandon Feb. 23. The four Rs (right nutrient source applied at the right rate at the right time in the right place) form the backbone of Fertilizer Canada’s campaign to balance environmental



Mario Tenuta, professor of applied soil ecology at the University of Manitoba predicts, among other things, that anhydrous ammonia and urea — popular nitrogen fertilizers — will be banned because they produce too much nitrous oxide — a powerful greenhouse gas.

In the battle to mitigate global warming farmers’ nitrogen use will be scrutinized

But soil scientist Mario Tenuta says there are things farmers can do to help themselves

The fight to control global warning will bring about big changes in how Manitoba farmers farm, says Mario Tenuta, professor of applied soil ecology and chair and adviser of the B.Sc. Agroecology Program at the University of Manitoba. “I predict eventually they will outlaw anhydrous ammonia and urea and replace it with high-efficiency (nitrogen) fertilizer,”