Agricultural Soil Carbon methodology.
V4 agricultural soil carbon methodology with farmer-payment verification and IMD weather-context integration.
Overview
Agricultural soil carbon projects in India use VM0042 (improved agricultural land management) and the Soil ICP (improved crop production) framework. The permanence challenge is acute: soil carbon accumulated through no-till or cover cropping can be reversed within a single season if a farmer reverts to conventional tillage, often because they have not been paid. V4's methodology adds a farmer payment verification layer that traces disbursement records from project developers to individual farmers, and a practice reversal detection layer using multispectral satellite imagery to identify tillage patterns inconsistent with claimed sequestration practices.
The gap
Soil carbon permanence depends on farming practice continuity. Without farmer-payment verification, practice reversals are undetected.
V4 extensions
- +Farmer payment verification (practice continuation incentive)
- +IMD weather context for soil carbon modelling
- +Soil sampling protocol at V4-specified depths
- +Practice reversal detection (satellite crop pattern analysis)
Assessment pillars for agricultural soil carbon projects
Additionality (practice change from baseline)
Permanence (practice continuation verification)
Monitoring (soil sampling and satellite)
Social safeguards (farmer income verification)
Leakage (land use displacement)
Common findings in agricultural soil carbon projects
- -Farmer payment disbursement gaps leading to practice reversal
- -Soil sampling at insufficient depths (<30cm)
- -IMD weather anomalies not factored into sequestration estimates
- -Satellite-detected crop pattern inconsistencies with claimed practices
Methodology update log
Farmer payment verification requirements strengthened to require bank transfer evidence.
Soil sampling depth requirement set at 30cm minimum, 60cm for projects claiming deep carbon.
IMD weather anomaly correction factor introduced for drought and flood years.
VM0042 v2.0 mapped to V4 pillar structure following Verra methodology update.