India’s biochar story is at a tipping point. For corporate leaders looking at carbon removal, rural livelihoods, and air‑quality outcomes, biochar now sits in the “high potential but hard to execute” bucket. It offers a way to lock carbon into soils for decades, reduce open burning, and build climate resilience for farmers – but moving from pilots to scalable, investable models is still a work in progress.

India generates hundreds of millions of tons of crop residues every year, and a substantial portion is theoretically available for value‑addition. On paper, this looks like the perfect foundation for a large biochar industry; on the ground, the reality is far more fragmented and seasonal. Dr. Reddy’s Foundation initiated the pilot in year 2022 and implemented the technology leading to the experiences which are shared to relevant stakeholders at multiple forums. The majority of CSR climate and environment initiatives are targeting biochar as carbon dioxide removal (CDR) tool considering its permanence. The major challenges in the novel mission of making Biochar as one of the pioneer CDR strategies in India can be listed as:

Feedstock: Plenty on paper, scarce in practice

For CSR and CDR programmes, the first barrier is not technology but biomass logistics. Residues are spread across millions of small farms, harvest windows are short, and the material is bulky and low‑density. Collecting, drying, storing, and transporting residues quickly adds cost and complexity, so “national biomass potential” does not automatically translate into a bankable feedstock supply at site level. This means that any serious CSR or carbon‑removal initiative on biochar has to start with local aggregation strategies – who will collect, how will they be paid, what infrastructure is needed, and how to keep material flowing beyond a single harvest season.

Technology: Making Biochar for Soil Fertility work in real conditions

The second big constraint is technology performance in real rural conditions. Biochar quality depends on what goes into the reactor (feedstock type, moisture, particle size) and how the unit is operated (temperature, residence time, design). A plant that works beautifully with one biomass stream can deliver a very different product when the feedstock changes, and farmers respond to what they see in their fields, not to design specifications on paper.

For CSR and CDR leaders, this points to the need for standardization and quality assurance – clear operating protocols, performance testing, and monitoring for both agronomic impact and emissions. Without this, it is hard to scale beyond demonstration plots or to build credible carbon‑removal claims.

Soils: Why Biochar for Soil Fertility needs local fit

Biochar is not a universal input that can be dropped into every soil and crop system. India’s soils range from acidic lateritic belts to alkaline black soils and rich alluvial zones, and the same biochar behaves very differently across this diversity – changing pH, nutrient dynamics, water‑holding, and microbial activity in context‑specific ways.

This creates a strong case for “biochar plus” approaches: charging and blending, combining with compost or fertilizers, granulation, and crop‑ or soil‑specific formulations instead of generic bags of product. CSR portfolios that integrate field agronomy, soil testing, and product development will have a far better chance of delivering visible, farmer‑level results than stand‑alone biochar production plants.

Application: Neither single recommended dose nor universal application mechanism

There is no one ‘right’ dose for Biochar for Soil Fertility in India. Trials in India and globally show that yield response varies with soil type, crop, application rate, and the way biochar is integrated with nutrient management. Too little, and the farmer sees no difference; too much, and costs rise faster than benefits. Mechanization is another missing piece. There is currently no widely adopted Indian solution for co-applying biochar and fertilizer at scale; in many places, biochar is still applied manually and unevenly, which raises labour demand and reduces consistency. CSR programmes that invest in practical application tools and protocols – for example, simple attachments, co‑granulated products, or service‑provider models – can unlock far more value from every tonne of biochar produced.

Pollution and safety: Getting the basics right

From a climate and ESG standpoint, production discipline is non‑negotiable. Poorly controlled combustion or pyrolysis can emit particulates and black carbon, undermining both climate benefits and local air quality. Regulatory clarity is still emerging; existing CPCB notifications do not explicitly address biomass conversion to biochar, for soil-applied biochar, which can complicate approvals.

Feedstock contamination is an equally serious risk. If biomass is sourced from polluted sites – industrial fringes, sewage‑affected areas, contaminated wastes – heavy metals and other pollutants can become concentrated in the biochar instead of being neutralized, and then enter agricultural soils. This is particularly relevant when using invasive species or biomass from non‑agricultural arid lands. Any CSR‑backed biochar initiative must therefore budget for feedstock screening and end‑product testing as a core safeguard, not an optional extra.

Business model: Beyond a low-priced soil amendment

Purely commercial models based on selling biochar as a low‑priced soil amendment struggle in the Indian market. Feedstock logistics are costly, production is variable, and farmer willingness to pay is limited when benefits are gradual and not always visible in the first season. Projects become more viable when they stack multiple revenue streams – carbon credits, energy recovery, premium positioning for specific crops, nutrient‑enriched blends, or integration into broader regenerative agriculture programs. Without such complementary revenue, it is difficult to reach attractive returns or to sustain operations once early grants are exhausted.

Where CSR can make the decisive difference

In this context, CSR capital is strategically positioned to bridge the “valley of death” between technical promise and bankable scale. Well‑designed CSR support can underwrite:

• Feedstock aggregation systems and community‑level logistics.
• Demonstration units and learning sites in priority geographies.
• Field trials across soil types and crops, including soil‑testing and yield tracking.
• Emissions monitoring and environmental safeguards.
• Product testing, certification, and farmer awareness campaigns
• Prototypes for mechanized application and service‑provider models.

This is important because biochar’s benefits – soil‑carbon build‑up, yield stability, reduced burning – accrue over several years, while most costs are front-loaded. Strategic CSR support can keep promising projects alive long enough to generate evidence, attract commercial partners, and transition to carbon‑finance or blended‑finance models.

Closing perspective

or India, the question around Biochar for Soil Fertility is no longer “Does it work?” but “Can we build the right ecosystem around it?” Meaningful contribution to carbon dioxide removal will require more than isolated plants; it calls for reliable feedstock systems, standardized technology, contamination safeguards, agronomy‑led application protocols, practical mechanization, and diversified revenue structures.  India already has the biomass, the soil‑health crisis, and the climate imperative to justify serious investment. The opportunity for CDR and CSR leaders is to help design and finance the institutional, engineering, and financial architecture that can turn biochar from a promising idea into a responsible, large‑scale climate and rural‑development solution.

By

Dr. Kumar Abbhishek | Technical Associate – Action for Climate and Environment