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Enhanced rock weathering · India

Indian farmland.Permanent carbon removal.

Enhanced rock weathering designed for Indian smallholders, backed by rigorous geochemical measurement.

For carbon buyersHow it works

Farmland landscape · illustrative footage

The idea

Rock, soil, rain and time can become a carbon-removal pathway.

BasaltFarmlandRainSoil chemistryCarbon removal

Silicate rock has been drawing CO₂ out of the atmosphere for as long as there has been rain. Crushing it and spreading it on cultivated soil speeds that up — and the same rock corrects acidity and returns nutrients to the field.

An open palm holding crushed dark-grey basalt over a steel sieve: angular grains from fine dust to pieces several millimetres across, dust on the fingers, and a centimetre ruler laid across the sieve for scale.
MaterialCrushed basalt prepared for field application.

How it works

Basalt weathers in the soil, and the carbon leaves as bicarbonate.

  1. 01Rock

    Crushed basalt

    Silicate rock from quarries near the districts we work in, assayed for composition and trace metals before it leaves.

  2. 02Field

    Applied to compatible soil

    Spread at agronomic rates, in a window that already exists in the cropping calendar.

  3. 03Soil

    Rain starts the reaction

    Rainwater carrying dissolved CO₂ forms a weak carbonic acid. It dissolves the rock grains and releases calcium and magnesium.

  4. 04Water

    Carbon becomes bicarbonate

    The reaction converts CO₂ into dissolved bicarbonate — no longer a gas, no longer in the atmosphere.

  5. 05River → ocean

    Carried to the sea

    Bicarbonate drains through soil water and rivers to the ocean, where it is stable for tens of thousands of years.

Understand the processExplore the science

Why India

A patchwork of soils, climates and crops.

How fast basalt dissolves, how much the soil gains, and how hard the removal is to detect all change with the ground beneath it. Read the zone-by-zone assessment, hard cases included.

  • JKJammu & Kashmir: not in the current assessment
  • LALadakh: not in the current assessment
  • PBPunjab: Indo-Gangetic alluvial
  • HPHimachal Pradesh: not in the current assessment
  • UKUttarakhand: not in the current assessment
  • RJRajasthan: not in the current assessment
  • HRHaryana: Indo-Gangetic alluvial
  • DLDelhi: not in the current assessment
  • UPUttar Pradesh: Indo-Gangetic alluvial
  • BRBihar: Indo-Gangetic alluvial
  • SKSikkim: not in the current assessment
  • ARArunachal Pradesh: not in the current assessment
  • GJGujarat: Coastal & saline
  • MPMadhya Pradesh: Deccan Vertisols
  • CGChhattisgarh: Red & lateritic
  • JHJharkhand: Red & lateritic
  • WBWest Bengal: not in the current assessment
  • ASAssam: North-eastern & Himalayan foothills
  • NLNagaland: not in the current assessment
  • MHMaharashtra: Deccan Vertisols
  • TGTelangana: Deccan Vertisols
  • ODOdisha: Red & lateritic
  • MLMeghalaya: North-eastern & Himalayan foothills
  • MNManipur: not in the current assessment
  • GAGoa: not in the current assessment
  • KAKarnataka: not in the current assessment
  • APAndhra Pradesh: Coastal & saline
  • TRTripura: not in the current assessment
  • MZMizoram: not in the current assessment
  • KLKerala: not in the current assessment
  • TNTamil Nadu: not in the current assessment
  • Red & lateriticStrong fitChhattisgarh · Odisha · Jharkhand · eastern MP
  • Indo-Gangetic alluvialWorkableUttar Pradesh · Bihar · Punjab · Haryana
  • Deccan VertisolsHard caseMaharashtra · Madhya Pradesh · Telangana
  • North-eastern & Himalayan foothillsHard caseAssam · Meghalaya · sub-Himalayan belt
  • Coastal & salineWorkableCoastal Andhra · Gujarat · Sundarbans margin
  • Not in the current assessment
Schematic. One square per state in approximate position — not to scale and not a boundary map; smaller union territories are not shown. Most states span more than one soil class; each takes the zone it is listed under in our interpretation models.

Measurement · MRV

The measurement is part of the deployment.

Every removal figure will pass through this chain, in this order, and carry its uncertainty. None has reached the end of it yet.

  1. Field

    Candidate plot

  2. Plot geometry

    Versioned

  3. Baseline

    0–15 · 15–30 cm

  4. Soil sampling

    Across seasons

  5. Lab analysis

    XRF · CEC · BD

  6. Weathering signal

    Ti · Zr · Nb

  7. Carbon quantification

    t CO₂ ha⁻¹, net

  8. Uncertainty

    ± interval

  9. Reporting & verification

    Not yet

Explore our MRVThe full measurement method

For the farmer

A field result a farmer can use.

A farmer who takes part gets a soil health card in the format they already know, in Hindi, every season — one they can compare against last year's. What taking part involves

Layout mock-up of a Soil Health Card in Hindi in the Government of India format: farmer details redacted, a table of twelve soil test results with colour-coded ratings, fertiliser recommendations in kilograms per hectare, and suggestions. The values shown are placeholders, not a real test.Layout preview — not a real card
An elderly farmer in a turban and a field technician in a cap crouched together on a freshly sown plot. The farmer works a handful of dug soil beside a soil sampling tube while the technician writes on a sample bag; a bucket, a plot stake, a handheld GPS unit, a clipboard and a crate of filled sample bags lie around them. Label text is obscured.
FieldFarmer participating in field sampling and soil monitoring.

Status

Where we stand today

No tonnage counters, registry badges or buyer logos — we have not earned them yet. Explore our current methodology

Carbon credits
Pre-first issuance.
Registry pathway
Under evaluation.
Third-party verification
Planned alongside the verification pathway.
Agronomic outcomes
Measured before attributed.

Work with Bhu Carbon

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