Adopt nitrogen stabilizers
Adopt nitrogen stabilizers
Nitrogen stabilizers are agricultural additives used with fertilizers to reduce nitrogen losses and lower emissions.
Urease inhibitors slow the breakdown of urea, cutting ammonia loss, while nitrification inhibitors delay the conversion of ammonium to nitrate, reducing leaching and nitrous oxide emissions. By keeping more nitrogen in the soil for crops to use, stabilizers boost efficiency and help cut unnecessary GHG emissions.
We developed a tool to quantify and certify emission reductions when nitrogen stabilizers are adopted in agriculture - a perfect tool for starting sustainability projects.

Adoption of nitrogen stabilizers to transition to low-carbon agriculture
Methodology ID: PM.0004
Date of Issue: July 8, 2025
Developer: Proba World BV
Nitrogen fertilizers are essential for crop yields, but they’re also a major source of nitrous oxide (N₂O). This methodology focuses on nitrogen stabilizers: compounds added to fertilizers to reduce nitrogen losses and cut emissions.
The methodology makes it possible to issue Scope 3 reduction certificates for agricultural projects that use nitrogen stabilizers, such as nitrification and urease inhibitors. These certificates can then attract carbon finance to scale up the adoption of stabilizers in agricultural systems.
Contact us via hello@proba.earth if you want to start a GHG project.
Relevant documents

PM.0004 Nitrogen Stabilizer Methodology
GHG Methodology document to quantify emission reductions from adopting nitrogen stabilizers.
Download
Expert Review - Feedback & Response
This document outlines the feedback received from FoodChainID on version 0.9 of the GHG methodology.
Download
Public Consultation - Feedback & Response
This document outlines the feedback received during the public consultation period on version 0.95 of the methodology.
Download