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Carbon Management Practices and Quantification in Agriculture

This study explores carbon management practices in agriculture, focusing on emissions reduction and carbon sequestration. It analyzes adoption rates, quantification methods, and economic feasibility to enhance GHG benefits in farming. It presents key practices like zero tillage, reduced summer fallow, and increased forages to reduce net emissions effectively.

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Carbon Management Practices and Quantification in Agriculture

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  1. Carbon management practices and quantification Marie Boehm AAFC February 11, 2003

  2. Carbon management and quantification • Removals > Emissions • Rate of carbon sequestration > rate of non CO2 emissions (net sequestration) • Economically feasible • relative to conventional practices (positive adoption rate) • Need to understand “whole system” • Quantification • adoption rate X net C sink

  3. Carbon management practices • Practices for which emissions and removals quantified • Increase zero tillage • Reduced summerfallow • Increase permanent cover • Increase forages in crop rotation • Improved grazing land management • To identify opportunities ... Quantify and project to 2008

  4. Adoption Rates 20000 H M 15000 L ZT 10000 Hectares ('000) BAU 5000 BAU SF L M H 0 1991 1996 2001 2008 Year

  5. Zero Tillage and SF Scenarios: C Sequestration Coefficients ACTIVITY PRAIRIES NON-PRAIRIES BRN D BRN BLK Zero Tillage 0.73 0.73 1.34 0.54 Reduce SF 0.15 0.16 0.08 Increase forage 0.94 2.44 2.44 Permanent cover 0.88 1.15 3.3 3.3 Expert opinion based on measures Modeled - Century SF coefficients for 1990

  6. National Results: Moderate Adoption Rates % change from BAU ZT SF Forage

  7. 1.1 Mt 0.7 Mt Relative to BAU 3.1 Mt Net BAU emissions (Mt): 20.2 10.4 9.1 Benefit distributionIncrease zero tillage

  8. 5% BC AB SK MB 0% Relative to BAU -5% -10% -15% Net BAU emissions (Mt): 20.2 10.4 9.1 Benefit distribution Decrease summerfallow

  9. Benefit distribution Increase forages 15% 10% Relative to BAU 5% 0% BC AB SK QC NS -5% Net BAU emissions (Mt): 20.2 10.4

  10. Summary • Best practices • have GHG benefits • economically and technically viable - adopted • have other environmental benefits • BMP

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