Greenhouse gas emissions as related to forage-crop conversions:

Determining agricultural land management practices that reduce greenhouse gas emissions


Team:

Project Leaders:  Dr. Brian Amiro, Dept. Soil Science, University of Manitoba Email: brian_amiro@umanitoba.ca
Dr. Mario Tenuta, Dept. Soil Science, University of Manitoba Email: tenutam@cc.umanitoba.ca
Graduate Students:   Trevor Fraser, Dept. Soil Science, University of Manitoba , Amanda Taylor, Dept. Soil Science, University of Manitoba
Completed: Siobhan Stewart, MSc

Funding:

Manitoba Sustainable Agricultural Practices Program

Objectives:

  • To quantify greenhouse gas emissions from agricultural land under different land management practices
  • To determine land management practices that will reduce greenhouse gas emissions from agricultural lands
  • To determine the rate that carbon sequestered by a long standing perennial system is lost after conversion to annuals and vice-versa
  • To determine the environmental drivers of CO2 exchange

Design:

This study has two components, utilizing micrometeorological techniques for:

  • Direct continuous measurement of greenhouse gas (CO2, N2O) fluxes for an alfalfa field following recent conversion from annual cropped land
  • Direct measurement of CO2 flux from long established forage land following conversion to cropped land

Posters to download:

Net ecosystems production over perennial and annual cropping systems as measured by the eddy covariance technique. Amanda Taylor and Brian Amiro.

Carbon net ecosystem exchange following conversion of pasture to annual crops. Trevor Fraser and Brian Amiro.

Does conversion to perennial systems affect net greenhouse gas emissions and soil health? Siobhan Stewart, Aaron Glenn, Mario Tenuta and Brian Amiro.

Download Report PDF:   Greenhouse gas implications of forage-crop conversions