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N2O Emissions Reductions through Changes in Fertilizer Management
The American Carbon Registry (ACR) Methodology for N2O Emissions Reductions from Changes in Fertilizer Management details requirements for quantification of GHG emissions reductions in the agriculture sector resulting from changes in how fertilizer is applied and used.
The methodology incorporates site specific data into a peer-reviewed, tested and highly parameterized model, the Denitrification-Decomposition (DNDC) model, to quantify direct N2O emissions as well as indirect emissions from leaching and ammonia volatilization.
This methodology is applicable to Agricultural Land Management (ALM) ACR project activities that involve a change in fertilizer management including changes in fertilizer rate, type, placement, timing, use of timed-release fertilizers, use of nitrification inhibitors, and other factors.
Projects using this methodology must comply with all requirements of the ACR Standard, submit a GHG Project Plan for certification by ACR, and secure independent verification by an ACR-approved third-party verifier.
Process documentation:
- Original methodology submitted to ACR for approval
- Public stakeholder consultation comments and responses
- Scientific peer review comments and responses
Methodology development background papers:
