The Biodiversity Farmers: 6 Ways Ancient India Fed a Civilisation Without Destroying the Land

By Dr. Narayan Rout | Author | Researcher |    India Series  ·  24 min read  ·  Published: August 05, 2026

Contents of This Research Pillar

Table of Contents

1. Introduction
2. Key Takeaways
3. What did “farming” mean in ancient India, before the word sustainable existed?
4. The seed republic — how India became one of Vavilov’s great centres of crop origin
5. Krishi Parashara and Vrikshayurveda — the agronomy textbooks centuries ahead of their citation
6. Sacred groves — conservation enforced by belief, not by law
7. Koraput and Kuttanad — proof these systems still work, not nostalgia for the fact that they once did
8. The turning point — what the Green Revolution actually cost
9. Debal Deb and the Odisha seed banks — what recovery looks like in practice
10. Ritu-Hita-Mita Bhoga today — what a reader can actually carry forward
11. Quest Sage Insight
12. What You Can Do With This
13. Conclusion
14. Frequently Asked Questions
15. References and Sources
16. Further Reading

Ask most people what fed ancient civilisations and they’ll picture scarcity, small yields, constant risk of famine. India’s agricultural record tells a different story. For thousands of years, farmers across the subcontinent ran systems that were, by the genetic evidence, extraordinarily biodiverse, and that biodiversity wasn’t incidental to how they fed people. It was the mechanism.

This article follows that mechanism through five threads that turn out to be one continuous story: the genetic map that made India one of the world’s centres of crop origin, the classical texts that recorded farming as applied science rather than custom, the sacred groves that conserved genetic material through belief rather than law, the living UN-certified systems still running today, and the sharp, recent, well-documented rupture that came when the country briefly abandoned this model. Understanding what was lost in that rupture is what makes the recovery effort, and your own small part in it, make sense.

The governing claim running through everything that follows is this: India’s ancient farmers did not choose between feeding people and protecting biodiversity, because in their system, biodiversity was the food security mechanism, not a cost weighed against it.

Section	What it covers	Why it matters to you
1. The paradigm	Ancient Indian agriculture was built on biodiversity as infrastructure, not decoration.	It changes how you judge whether a farming system is actually working.
2. The seed republic	India is one of Vavilov’s original centres of crop origin, with roughly 117 domesticated species.	The diversity you eat from today has deep genetic roots in this exact geography.
3. The science texts	Krishi Parashara and Vrikshayurveda encoded mixed cropping and soil science as applied agronomy.	What reads as scripture is, in large part, a functioning field manual.
4. Sacred groves	100,000 to 150,000 community-protected forest patches function as unofficial gene banks.	Belief-based conservation has outperformed some formally funded alternatives.
5. Living proof	Koraput, Kuttanad, and Kashmir’s saffron heritage carry FAO’s GIAHS certification today.	These are not museum pieces, they are currently productive farms.
6. What broke	The Green Revolution’s monoculture push cost India over 100,000 rice landraces in two decades.	Understanding the cost is what makes the recovery effort meaningful.
7. The recovery model	Dr. Debal Deb’s Odisha seed banks show landrace revival is achievable at scale.	Individual and community choices genuinely move this needle.
8. Taking it forward	Ritu-Hita-Mita Bhoga gives a sequential, personal version of the same logic.	You can practise a version of this principle at your own dinner table.

Ancient Indian agriculture treated variety itself as the safeguard against famine, disease, and soil collapse, rather than treating a single high-yield crop as the goal and biodiversity as a nice-to-have on the side.

Here’s the thing about the word “sustainable” — it didn’t exist as a farming category two thousand years ago, because nobody had yet built a system extreme enough to need the word as a correction. Ancient Indian farmers weren’t choosing between yield and ecology. In their working model, the two weren’t separable questions.

A field carrying six or seven crop varieties wasn’t a failure to specialise. It was insurance. If the monsoon came late, one crop failed and another, bred for drier conditions, carried the household through. If pests attacked one species, the mixed planting broke up the pest’s easy path across a field. Diversity wasn’t sentiment. It was risk management, written into the soil.

This is the paradox worth sitting with before we go further: the system that looks, from a distance, the most “unscientific” — small mixed fields, hand-saved seed, temple-adjacent forest patches — is the one that, on the actual evidence, kept 117-plus domesticated species alive across a subcontinent for thousands of years. The system that looks the most scientific, chemical-input monoculture, needed less than three decades to burn through resources that took millennia to accumulate. We’ll get to that turn later. First, the seeds.

Nikolai Vavilov, a Soviet botanist working in the 1920s and 30s, independently mapped the world’s centres of crop genetic diversity and placed the Indian subcontinent among his original eight — a conclusion classical Indian agriculture had effectively assumed for two millennia.

Vavilov’s method had nothing to do with scripture. He travelled through more than fifty countries collecting specimens, looking for the regions where a crop’s wild relatives and cultivated varieties showed the greatest genetic spread. Where he found that spread, he inferred domestication had originated. He called these regions centres of origin, and he ranked the Hindustan Centre, essentially the Indian subcontinent, among the world’s most significant, crediting it with roughly 117 distinct domesticated species built primarily around rice, millets, and legumes.

That number gets more interesting the closer you look at it. Pre-Harappan Punjab was growing sorghum by 2300 BCE. Deccan’s Jorwe farmers were practising rabi-kharif crop rotation — two planting seasons tied to two monsoon patterns — by 1400 BCE. Finger millet, kodo millet, and foxtail millet each carry independent domestication stories rooted in specific Indian regions, prized for drought tolerance and performance on soils too poor for rice.

Crop	Domestication region / era	Notable trait
Rice (Oryza sativa indica)	Ganges–Brahmaputra valleys, ancient	Backbone of Indian food security; thousands of landraces
Finger millet (Ragi)	Secondary centre, semi-arid India	Drought-resistant, nutrient-dense
Kodo millet	Central India, domesticated c. 3,000 years ago	Thrives on poor soils, high in fibre and iron
Sorghum	Pre-Harappan Punjab, c. 2300–2000 BCE	Early rabi–kharif rotation crop

That’s the convergence, stated plainly. Two entirely separate knowledge systems, a Russian geneticist with a specimen collection and a Sanskrit agronomist writing verse, looked at the same geography roughly fifteen centuries apart and reached compatible conclusions about where the world’s agricultural richness actually lived.

Classical Sanskrit texts including Krishi Parashara and Surapala’s Vrikshayurveda laid out soil classification, seed storage, and mixed cropping as deliberate agronomic technique rather than as devotional custom, and much of it now shows up independently confirmed in peer-reviewed intercropping research.

Krishi Parashara, attributed to the sage Parashara and dated by most scholars to somewhere around the 4th century CE onward, doesn’t read like scripture when you actually get into it. It reads like a field manual. It classifies soil types, sets out manuring schedules, and states, without any spiritual hedging, that crops grown without adequate manure simply will not produce adequate yield. That’s a testable agronomic claim, not a moral one.

Surapala’s Vrikshayurveda, written around 1000 CE by a royal physician, goes further into plant science proper: 325 Sanskrit verses covering roughly 170 species, with detailed instruction on seed collection timing (February–March, per Parashara’s guidance), sun-drying without direct ground contact, and storage that specifically avoids proximity to white ants, cow sheds, or the labour room, alongside grafting, disease management, and intercropping.

None of this was theoretical. Kautilya’s Arthashastra, Varahamihira’s Brihat Samhita, and the Kashyapiya-Krishisukti all independently corroborate the same core techniques: mixed cropping, crop rotation, terrace farming, and organic soil amendment built entirely from farm-available inputs like cow dung, since nearly every farming household kept cattle.

This is where the convergence sharpens into something testable. A 2025 systematic review in Frontiers in Sustainable Food Systems, working through more than 1,300 studies down to 95 rigorous ones, found legume intercropping, the same mixed-cropping principle Krishi Parashara describes, boosting yields 20 to 40 percent while cutting greenhouse gas emissions 15 to 25 percent against monoculture. Separate maize-legume trials recorded gains of 24 to 45 percent. Nobody involved in that 2025 review was reading Sanskrit verse for guidance. They didn’t need to. The verse had already done the field trial, one thousand years earlier, at the scale of an entire subcontinent.

India is estimated to hold between 100,000 and 150,000 sacred groves, small forest patches protected for generations by community taboo rather than forestry legislation, and ecologists consistently find them functioning as genuine biodiversity reservoirs.

Drive through almost any older village in Kerala, Karnataka, Meghalaya, or Odisha and you’ll likely pass one without noticing: a modest patch of untouched forest, maybe just a few acres, with no fence and no signage. Locally these go by dozens of names, kavu in Kerala, devarakadu in Karnataka, sarana in Jharkhand, oran in Rajasthan, law kyntang in Meghalaya. What they share is a presiding deity or ancestral spirit and an unwritten but strictly enforced taboo against cutting even a single branch.

Researchers studying sites like the sacred groves of Visakhapatnam district have documented dozens of tree species, multiple genera, and full canopy layers surviving inside these patches while surrounding land was cleared decades ago. Ecologists at the Nilgiri Biosphere Reserve and across the Western Ghats describe the same pattern repeatedly: groves functioning as unofficial gene banks for medicinal and endangered plant species, alongside measurable soil and water conservation benefits.

The honest caveat belongs here too: this system is genuinely fraying. Conservationists across multiple states report younger generations less anchored to the belief structures that made the taboo self-enforcing, and groves are shrinking in number and size even as awareness campaigns try to reverse the trend. A conservation model built on faith is only as durable as the faith itself, which is precisely why the next section, systems certified and actively supported by international institutions, matters.

Three living Indian farming systems, Koraput in Odisha, Kuttanad in Kerala, and the saffron heritage of Kashmir, carry UN FAO certification as Globally Important Agricultural Heritage Systems, meaning they remain productive, biodiverse, and economically active today rather than being preserved as museum pieces.

The FAO’s GIAHS programme doesn’t hand out its designation for sentimental value. A site has to demonstrate an ongoing, functioning agro-ecosystem, rich in genuinely significant biodiversity, sustained by a community that still depends on it for its livelihood. India has three: Koraput in Odisha’s Eastern Ghats, recognised in 2012; the Kuttanad Below Sea Level Farming System in Kerala; and the Pampore Saffron Heritage of Kashmir.

Koraput is the one worth lingering on. It’s practised by roughly 52 tribal communities, including the Khond, Paroja, Bhumia, and Bonda peoples, growing paddy on highland slopes with an enormous diversity of farmer-developed landraces, alongside rich genetic reserves of medicinal plants. Sacred groves sit inside the same landscape, preserving plant genetic resources as part of the same continuous system rather than as a separate conservation category. The Odisha state government has since layered community seed banks and organic farming revival programmes on top of what tribal farmers were already doing.

Kuttanad is the odder cousin: the only major Indian farming system growing rice below sea level, on land reclaimed from delta swamps into brackish waterways, combining paddy wetlands, coconut garden lands, and fishing in one integrated mosaic. It’s a genuinely unusual solution to a genuinely unusual geography, and it’s still feeding people today.

Feature	Ancient polyculture system	Post-Green-Revolution monoculture
Crop diversity per field	Multiple species grown together (mixed cropping)	Single high-yield variety, often wheat or rice alone
Soil input	Cow dung, crop rotation, nitrogen-fixing legumes	Synthetic NPK fertiliser, frequently over-applied
Resilience to shocks	Landraces bred for local flood, drought, salinity	High vulnerability without irrigation and chemical support
Water dependency	Rain-fed, tank and community irrigation	Heavy groundwater extraction, falling water tables
Genetic reservoir	Thousands of locally adapted seed varieties	Fewer than ten varieties covering most production

The Green Revolution of the late 1960s dramatically increased India’s grain output and averted mass famine, but within two decades it also drove the country’s rice landrace count from over 110,000 down to under 7,000, marking the fastest documented biodiversity collapse in Indian agricultural history.

Let’s be precise about what happened, because both the achievement and the cost are real, and neither cancels the other out. The Green Revolution introduced high-yielding wheat and rice varieties, chemical fertiliser, and expanded irrigation at a moment when India faced genuine famine risk. Grain output rose sharply. People who would have gone hungry did not. That’s not a small thing.

But the mechanism that delivered the yield gain, standardising on a handful of high-input varieties at national scale, was also the mechanism that erased the landrace diversity described earlier in this article. Debal Deb’s research places India at over 110,000 native rice varieties before the 1960s and under 7,000 by the 1990s. At one stretch, more than 75 percent of national rice production came from fewer than ten varieties.

The knock-on ecological cost is now well documented separately from the biodiversity question. In Punjab, the desirable soil NPK ratio of roughly 4:2:1 has been measured skewing as far as 31:8:1 under intensive chemical application, a distortion linked to collapsing soil microbial life and declining organic carbon. Livestock diversity narrowed in parallel — by the early 2000s, Punjab’s cattle, buffalo, and sheep populations had consolidated down to three predominant breeds each, with several heritage breeds now listed as threatened. Groundwater tables fell. Farmer debt cycles deepened; one study in the 2004–2006 period found 86 percent of surveyed Punjab farmers taking short-term loans annually just to plant.

This is the deliberate turning point in the article’s arc, and it deserves to be read as one. Everything before this section describes a system that worked for millennia. Everything after it describes what recovery from a very specific, very recent rupture actually looks like.

Ecologist Dr. Debal Deb has spent nearly three decades building South Asia’s largest open-access folk rice seed bank, growing from 152 collected varieties to more than 1,420 landraces, distributed free to over 17,000 farmers, with his Basudha conservation farm rooted in southern Odisha.

In 1996, Deb approached West Bengal’s official Rice Research Station with 152 traditional folk rice varieties he’d personally collected from remote tribal villages, hoping the institution would help conserve them. They refused, calling his work “unscientific and retrogressive.” He kept going anyway, on his own, cycling and walking into some of the hardest-to-reach corners of Odisha and West Bengal to gather what farmers still had.

He named his seed bank Vrihi, the Sanskrit word for rice, and eventually established Basudha, meaning Earth Mother, as his conservation farm in the Niyamgiri hills of Odisha. Today Vrihi holds over 1,420 landraces, South Asia’s largest open-access collection of its kind, distributed free to farmers on one condition: bring some back after growing it, so the cycle continues.

The clearest proof point came after disaster, not before it. When Cyclone Aila struck the Sunderbans in 2009, sweeping 20,000 hectares out of production, Deb had already distributed native varieties to farmers in the region following an earlier 1998 drought. The modern hybrid seedstock died in the flood and salinity. The native landraces he’d distributed not only survived, they produced usable grain. He later admitted the outcome was bittersweet: once the crisis passed, many of the same farmers went right back to modern varieties, because they’d received the native seed for free and never priced it as the thing that had actually saved them.

Ritu-Hita-Mita Bhoga, a sequential Ayurvedic eating principle, offers a modern, personal-scale version of the same logic that ran ancient India’s farms: eat what is seasonal, then what specifically suits your body, then only as much as your digestion can genuinely process.

The sequence matters, and it’s worth stating clearly because it’s often flattened into a single vague idea. Ritu Bhoga comes first: eat what’s locally available and grown in its natural season, not flown in out of season. Hita Bhoga comes second: of that seasonal food, choose what’s specifically beneficial for your own constitution, not a generic “healthy food” list. Mita Bhoga comes last: of what is seasonal and suited to you, eat only what your Agni, your digestive capacity, can actually process well.

You don’t need a farm to practise a version of this. Buying from farmers who still grow local, seasonal, indigenous varieties, whether that’s a specific rice landrace, a regional millet, or heirloom vegetables at a local market, is a direct, small-scale continuation of the seed-diversity story this article has been telling. Every landrace still in cultivation stayed alive because somebody kept growing it and somebody kept buying it. That’s the whole mechanism, still running, at whatever scale you’re able to join it.

Here’s what strikes me most about this research, having spent years working across engineering, naturopathy, and now this platform: the ancient farmer and the modern soil scientist are not adversaries in this story. They’re independent witnesses to the same conclusion, arrived at through completely different instruments — one using verse and generational observation, the other using isotope tracing and genome sequencing.

There’s something worth sitting with in that. We tend to frame “ancient wisdom versus modern science” as a contest with a winner. What this particular subject shows, again and again, is convergence rather than contest — two different methods checking each other’s work across a gap of a thousand years, and largely agreeing.

• Look for local, seasonal, indigenous crop varieties at farmers’ markets rather than defaulting to whatever is cheapest and most standardised at a supermarket.
• If you grow even a small kitchen garden, ask about heirloom or landrace seed options before buying standard commercial hybrid seed.
• Learn the name of at least one grain or vegetable landrace native to your own region, and ask a local farmer or vendor whether it’s still being grown.
• Support seed-bank and landrace-conservation organisations working in your region, even a small annual contribution helps sustain collections like Vrihi.
• Apply Ritu-Hita-Mita Bhoga in sequence at your own table: seasonal first, individually suited second, moderate portion third.

Return to where this article started: India’s ancient farmers did not choose between feeding people and protecting biodiversity, because in their system, biodiversity was the food security mechanism itself. That claim isn’t nostalgia. It’s what the genetic mapping, the classical texts, the sacred grove research, and the UN’s own GIAHS certification all independently point toward.

The Green Revolution’s costs don’t erase that history, they clarify what was actually at stake when it was set aside. And the fact that recovery, at Debal Deb’s seed banks, at Koraput, in every kitchen garden choosing a native variety over a standardised one, is visibly underway right now is the most useful thing this article can leave you with.

• 1. Vavilov Center. Wikipedia. https://en.wikipedia.org/wiki/Vavilov_center
• 2. Vavilov’s Eight Centers of Origin: The Global Hotspots of Agricultural Plant Diversity. Sustainability Shiksha. https://sustainability.shiksha/ecosystem-natural-resources/vavilovs-eight-centers-plant-diversity/
• 3. Ancient Grains of India. Google Arts & Culture, Ministry of Agriculture and Farmers Welfare. https://artsandculture.google.com/story/ancient-grains-of-india-ministry-of-agriculture-farmers-welfare/jAUhTdtXZC5b-A?hl=en
• 4. India: The Cradle of Crop Diversity and Economic Plants. Nature Safari India. https://www.naturesafariindia.com/crop-diversity-and-economic-plants/
• 5. 1420 Varieties, 25 Years: Meet the Man Rescuing India’s Rice Diversity From Extinction. The Better India. https://thebetterindia.com/189462/debal-deb-seed-bank-conserves-native-rice-variety-inspiring-india/
• 6. The Conservationist Saving India’s Heirloom Rice Varieties. Atlas Obscura. https://www.atlasobscura.com/articles/indian-rice
• 7. Debal Deb: Seed warrior who has conserved 1,480 traditional rice varieties. 30 Stades. https://30stades.com/2022/10/07/debal-deb-seed-warrior-conserved-1480-native-rice-varieties-shared-free-with-7600-farmers/
• 8. Sacred Groves: when thinking of forest conservation, a national park approach should make room for their vitality. Down To Earth. https://www.downtoearth.org.in/forests/when-thinking-of-forest-conservation-a-national-park-sanctuary-approach-should-make-room-for-the-vitality-of-sacred-groves
• 9. India’s sacred groves: Science, tradition join to protect biodiversity. Christian Science Monitor. https://www.csmonitor.com/Environment/2021/0322/Do-not-disturb-In-India-traditions-and-science-protect-sacred-forests
• 10. National Policy to Promote Globally Important Agricultural Heritage Systems (GIAHS) Sites in India. Press Information Bureau, Government of India. https://www.pib.gov.in/PressReleasePage.aspx?PRID=2158029
• 11. Globally Important Agricultural Heritage Systems (GIAHS). PMF IAS. https://www.pmfias.com/giahs/
• 12. Krshi Vijnana (कृषिविज्ञानम्). Dharmawiki. https://dharmawiki.org/index.php/Krshi_Vijnana_(%E0%A4%95%E0%A5%83%E0%A4%B7%E0%A4%BF%E0%A4%B5%E0%A4%BF%E0%A4%9C%E0%A5%8D%E0%A4%9E%E0%A4%BE%E0%A4%A8%E0%A4%AE%E0%A5%8D)
• 13. Traditional Soil Treatment and Practices in India. Agriculture.Institute. https://agriculture.institute/indian-agricultural-development/traditional-soil-treatment-practices-india/
• 14. The Dark Side of Success: Ecological Consequences of India’s Green Revolution. Sustainability Shiksha. https://sustainability.shiksha/strategies-models-for-sustainability/dark-side-success-ecological-consequences-india/
• 15. India Together: Scars of the Green Revolution. https://indiatogether.org/punjab-agriculture
• 16. Boosting resource use efficiency, soil fertility, food security, ecosystem services, and climate resilience with legume intercropping: a review. Frontiers in Sustainable Food Systems. https://www.frontiersin.org/journals/sustainable-food-systems/articles/10.3389/fsufs.2025.1527256/full
• 17. Agroecological approaches to sustainable development. Frontiers in Sustainable Food Systems. https://www.frontiersin.org/journals/sustainable-food-systems/articles/10.3389/fsufs.2024.1405409/full
• 18. Bhoomi Sukta — Sanskrit Text with English Translation. Greenmesg.org. https://greenmesg.org/stotras/bhoomi/bhoomi_sukta.php

• How Much Water Should You Really Drink? 7 Answers — TheQuestSage.com/how-much-water-drink-daily-evidence
• India’s Water Wisdom: 5 Ancient Engineering Systems — TheQuestSage.com/india-ancient-water-engineering-systems
• India’s Food Culture: 6 Ancient Nutritional Principles — TheQuestSage.com/india-ancient-food-culture-nutritional-principles
• The Complete Guide to Grains: 7 Categories — TheQuestSage.com/best-grains-health-body-evidence-guide
• Why Preventive Medicine Is the Future — TheQuestSage.com/preventive-medicine-future-healthcare

---