Full Cost Accounting for Agriculture – Final Report

The report introduces the Impact Pathways Framework to quantify the public benefits of agricultural Beneficial Management Practices (BMPs). Using the South Tobacco Creek (STC) watershed in Manitoba as a case study, the authors analyze three specific BMPs: zero-till, forage conversion (permanent cover), and small multi-purpose dams. The study calculates the non-market value of these practices by linking biophysical impact modes—such as phosphorus and sediment reduction and greenhouse gas mitigation—to economic valuation methods, primarily avoided cost and benefit transfer. The findings suggest that these BMPs provide significant public benefits that exceed their implementation costs, supporting the rationale for government funding of such practices to improve water quality and climate outcomes.

• The study estimates the annual non-market public benefit for three specific BMPs in the South Tobacco Creek watershed: zero-till at $80/ha/yr, forage conversion (permanent cover) at $150/ha/yr, and small dams at $1,667/dam/yr (in 2008 Canadian dollars).
• When aggregated across all 5,409 hectares of cropland in the South Tobacco Creek watershed, the combined public benefit of the three analyzed BMPs is estimated at $41.32 per hectare per year.
• The analysis indicates that the public benefits of the studied BMPs exceed their implementation costs, with benefit-to-cost ratios of 2.83 for zero-till, 1.23 for permanent cover, and 1.70 for small dams.
• Scaling the results to the full Tobacco Creek watershed, the report estimates the current total non-market value of these BMPs at $1.48 million per year, potentially increasing to $7.3 million per year if adoption rates for zero-till and permanent cover increase.
• The 'impact pathways' framework consists of three components: a social component to identify local watershed priorities and supporting BMPs, a biophysical component to quantify environmental changes via indicators, and an economic component to assign non-market monetary value to those changes.
• The report identifies a significant gap in Canadian environmental economics, noting a 'paucity of relevant valuation data' and a reliance on U.S. data from nearly 20 years ago, which may not reflect current technologies or the Canadian context.
• Phosphorus loading is highlighted as a critical priority for Manitoba due to its role in the eutrophication of Lake Winnipeg, with watershed processes contributing 73% of total phosphorus to the Red River basin and 76% to the Assiniboine River basin.

APA

McCandless, M., Venema, H. D., Barg, S., & Oborne, B. (2008). Full Cost Accounting for Agriculture – Final Report. International Institute for Sustainable Development. https://www.iisd.org/system/files/publications/measure_fca_2008.pdf

Chicago

McCandless, Matthew, Henry David Venema, Stephan Barg, and Bryan Oborne. Full Cost Accounting for Agriculture – Final Report. International Institute for Sustainable Development, 2008. https://www.iisd.org/system/files/publications/measure_fca_2008.pdf.

Wikipedia

{{cite report |last1=McCandless |first1=Matthew |last2=Venema |first2=Henry David |last3=Barg |first3=Stephan |last4=Oborne |first4=Bryan |title=Full Cost Accounting for Agriculture – Final Report |publisher=International Institute for Sustainable Development |date=December 2008 |url=https://www.iisd.org/system/files/publications/measure_fca_2008.pdf |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{mccandless2008full, author = {McCandless, Matthew and Venema, Henry David and Barg, Stephan and Oborne, Bryan}, title = {{Full Cost Accounting for Agriculture – Final Report}}, institution = {International Institute for Sustainable Development}, year = {2008}, month = dec, url = {https://www.iisd.org/system/files/publications/measure_fca_2008.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }