By Dr. Senthil Chinnasamy — 2025-12-18

India loves a good moral debate. Organic versus chemical farming has become one such battlefield, framed as a struggle between purity and poison, tradition and modernity, virtue and vice. But agriculture is not a philosophy seminar. It is a hard-nosed exercise in biology, logistics, economics, and scale.

As India prepares to feed nearly 1.6 billion people by 2050, the real question is not whether organic farming is desirable - it undoubtedly is - but whether it is feasible at national scale under current constraints. Do we have enough nutrients, biomass, time, and money to farm an entire nation organically - without risking food shortages, farmer distress, or economic instability?

When emotion steps aside, arithmetic walks in.

Plants Don't Care About Ideology

A rice or wheat plant does not know whether nitrogen comes from cow dung or a fertilizer factory. Plant roots absorb nitrogen only as nitrate (NO3-) or ammonium (NH4+) ions and phosphorus as phosphate ions. Whether those ions originate from compost or chemical fertilizer is irrelevant to the plant.

The difference lies in delivery speed and predictability.

Chemical fertilizers deliver nutrients immediately - like emergency medicine. Organic manures release nutrients slowly, mediated by soil microbes - like long-term nutrition. Healthy soils need organic matter. Crops, however, also need nutrients on time, especially during critical growth stages.

When ideology insists on only one approach, crops - and farmers - bear the risk.

Understanding Organic Yields - With Nuance

Global scientific evidence indicates that organic yields are lower on average than conventional yields, but the gap is neither uniform nor fixed. Large meta-analyses suggest organic yields typically average 75-85% of conventional systems, with wide variation depending on crop type, region, soil conditions, and management practices.

Importantly, research also shows that diversified cropping systems, improved rotations, and better agronomy can substantially narrow this gap. Crops such as millets, pulses, oilseeds, and many horticultural products often perform relatively well under organic and natural systems. By contrast, rice and wheat, which underpin India's food security, remain highly sensitive to timely nutrient availability at scale.

This variability matters. A national strategy must therefore be crop-specific, region-specific, and phased, rather than uniform.

The Nitrogen Reality Check

Nitrogen remains the most critical plant nutrient.

A 45-kg bag of urea delivers about 20.7 kg of nitrogen, costs roughly Rs 266, and is easy to transport and apply.

To supply the same nitrogen through farmyard manure (with ~0.5% nitrogen), a farmer would require over four tonnes of compost, costing approximately Rs 4,000, excluding labour, handling, and transport.

That is an order-of-magnitude difference in cost per unit of nutrient.

For high-value organic produce aimed at premium domestic or export markets, this may be economically viable. For India's staple food systems - feeding hundreds of millions - it is far more challenging.

What Organic Gets Right and Why It Matters

Organic and natural farming systems offer clear environmental benefits. International assessments highlight improved soil structure, enhanced biodiversity, reduced chemical runoff, and lower exposure to synthetic pesticides in many contexts. These outcomes are vital for long-term soil resilience and ecosystem health.

On nutrition, however, evidence is more nuanced. Large reviews show no consistent difference in macronutrient content between organic and conventionally grown foods, while micronutrient differences depend more on crop variety and agronomic practices than on production labels alone.

These benefits are real and important - but they do not, by themselves, resolve the national-scale constraints of nutrient availability, biomass supply, and food affordability.

The Biomass Constraint India Must Confront

India has approximately 140 million hectares of arable land. Organic and natural farming systems typically require minimum 10-15 tonnes of organic inputs per hectare per year to maintain soil fertility.

This translates into a national requirement of roughly 1.4-2.1 billion tonnes of organic material annually.

The critical question, therefore, is not intent - but availability.

Based on official estimates from the Ministry of Agriculture, ICAR, and the 20th Livestock Census, India's annual biomass availability can be broadly summarised as follows:

Agricultural Crop Residues

India generates around 650-700 million tonnes per year of crop residues. However, most of this biomass is already committed to livestock fodder, rural household fuel, and in-situ residue management. The recoverable surplus for composting is generally estimated at only 200-250 million tonnes.

Livestock Population and Manure

With about 535-540 million livestock, India generates large quantities of dung. Yet, due to dispersed grazing, household fuel use, and handling losses, the realistically collectable manure available for field application is estimated at 300-400 million tonnes per year.

Other Organic Sources

Even under optimistic assumptions, urban compost and agro-industrial residues contribute no more than 50-100 million tonnes annually at present.

The Arithmetic Gap

Taken together, India's total realistically recoverable organic biomass for agriculture is approximately 550-750 million tonnes per year.

Against a requirement of 1.4-2.1 billion tonnes, this leaves a structural gap of roughly 700 million to over 1 billion tonnes annually - even before accounting for transport costs, nutrient losses during composting, uneven regional distribution, and seasonal availability.

This shortfall is not a failure of commitment or awareness. It is a physical and logistical limitation.

Divert more crop residue to composting, and livestock lose fodder. Divert more dung to fields, and rural households lose a traditional energy source. Ignoring this arithmetic risks policies that are aspirational but operationally fragile.

Innovation Is Advancing - But Scale Still Matters

Organic and natural farming systems are evolving. Advances in biofertilizers, microbial inoculants, composting technologies, and improved crop rotations are improving performance in specific settings. Evidence suggests that yield gaps can narrow as systems mature and farmer knowledge improves.

The policy challenge, however, lies in scaling these innovations fast enough, and with sufficient biomass, to support India's staple grain systems without triggering yield shocks or food price volatility.

Why Integrated Nutrient Management Matters

Decades of long-term field experiments conducted by Indian Council of Agricultural Research (ICAR) consistently demonstrate that Integrated Nutrient Management (INM) - combining judicious chemical fertilizer use with organic inputs and biological solutions - delivers the most reliable outcomes:

• Stable yields
• Improved soil organic carbon
• Better nutrient-use efficiency
• Lower environmental externalities

INM is not a compromise. It is a science-based strategy for large, diverse agrarian economies.

Encouragingly, recent initiatives such as PM-PRANAM, natural farming clusters, and outcome-based incentives indicate a gradual shift toward balanced, evidence-driven policy.

Learning Carefully from Sri Lanka

Sri Lanka's recent experience is often cited in debates on organic farming. The lesson, however, is not about organic agriculture itself, but about abrupt, poorly sequenced policy decisions. The sudden withdrawal of chemical fertilizers, without adequate transition planning, led to sharp production declines, rising food prices, and economic stress.

For India, the takeaway is clear: sustainability transitions must be gradual, evidence-led, and farmer-centric.

A Question of Balance, Not Belief

The debate on organic farming should move beyond slogans. Organic and natural systems have an important role to play - particularly in soil restoration, diversified cropping, and export-oriented value chains. At the same time, Integrated Nutrient Management remains essential for safeguarding national food security and affordability.

The real policy questions are practical ones:

If India expands organic farming rapidly, where will the additional biomass come from - without diverting fodder, fuel, or raising food prices?

Should agricultural subsidies reward input volumes, or outcomes such as nutrient-use efficiency, soil carbon gains, and groundwater protection?

India does not face a choice between feeding its soil and feeding its people. It faces the more demanding task of doing both - intelligently, sequentially, and at scale.

That requires not ideology, but agricultural maturity.

Dr. Senthil Chinnasamy is an agricultural scientist and policy analyst specializing in sustainable farming systems and India's food security challenges.