Degraded soil is not a life sentence. Across India and the world, farmers are discovering that with the right practices, even the most depleted, compacted, and exhausted soils can be coaxed back to life. The journey of soil restoration is not one of dramatic interventions — it is one of patient, consistent, and intelligent management. This week, we explore the core practices that rebuild soil fertility the natural way.
Cover Crops and Green Manures: Feeding the Soil Between Seasons
One of the most powerful and underutilised tools in natural farming is the cover crop — a plant grown not for harvest but for the benefit of the soil. Cover crops perform multiple functions simultaneously:
Nitrogen fixation: Leguminous cover crops like dhaincha (Sesbania bispinosa), sunhemp (Crotalaria juncea), cowpea, and cluster bean host nitrogen-fixing bacteria in their root nodules. When incorporated into the soil or left to decompose on the surface, they release this fixed nitrogen — equivalent to 60–120 kg of urea per hectare — at no cost.
Biomass production: A well-grown cover crop can produce 10 to 20 tonnes of fresh biomass per hectare. This biomass, whether incorporated or left as mulch, feeds soil organisms and builds organic matter.
Soil protection: Cover crops shield bare soil from the impact of rain, which can seal the surface and cause compaction. Their roots open channels for water and air.
Weed suppression: Dense cover crops shade the soil surface, reducing germination of unwanted plants — a natural alternative to herbicides.
In the rice-growing states of Odisha and Chhattisgarh, farmers have begun incorporating dhaincha as a summer cover crop, reporting significant improvements in soil tilth and reduced fertiliser requirements within two to three seasons.
Green manuring takes this concept a step further — the cover crop is cut and incorporated into the soil while still green and moist, at its peak nitrogen content, typically just before or at flowering. Traditional Indian farming systems practised green manuring long before the term entered scientific literature, using locally available leguminous plants based on the accumulated knowledge of generations.
Crop Residue Management: The Value of What You Leave Behind
After harvest, the instinct of many farmers is to remove or burn crop residue. This impulse is understandable — residue can harbour pests, makes field preparation harder, and burning is fast and cheap. But burning destroys something irreplaceable: organic matter, soil biology, and the seeds of the next generation of soil fertility.
Stubble burning, now officially banned but still practised across Punjab and Haryana, releases carbon dioxide and particulate matter into the atmosphere while incinerating the microbial communities living in and around the residue. It leaves the soil bare, exposed, and biologically impoverished.
The natural farming alternative is in-situ residue management: after harvest, run the residue through a crop cutter or leave it standing and mulch it in place. Combined with Jeevamrutha application, this creates ideal conditions for rapid decomposition and nutrient cycling. Farmers who have adopted this practice report visible improvements in soil colour and texture within one to two seasons.
Avoiding Bare Soil: Nature’s Commandment
Walk through any undisturbed forest and you will not find bare soil. It is always covered — by leaf litter, moss, fallen branches, or living plants. This is not coincidence. Bare soil is vulnerable soil:
- Rain impact compacts the surface, reducing infiltration
- Sun heats the surface to temperatures that kill microbes
- Wind carries away the lightest and most organic-rich particles
- Without plant roots, soil cohesion is lost
The natural farming principle of never leaving soil bare can be achieved through mulching between crops, maintaining living borders and hedgerows, sowing cover crops immediately after harvest, and maintaining diverse weed communities in non-critical areas. Every square metre of soil that is covered is a square metre of biology being protected and supported.
Biochar: Turning Waste into a Long-Term Soil Amendment
Biochar — charcoal produced from organic material (crop residues, wood, husks) through pyrolysis (burning in limited oxygen) — is one of the most exciting and scientifically validated soil amendments available to natural farmers.
Unlike organic matter, which decomposes and releases carbon relatively quickly, biochar is highly stable and can remain in soil for centuries. Its porous structure provides a habitat for soil microbes, and once “charged” with nutrients and microbial inoculants (such as Jeevamrutha or compost tea), it becomes a long-term reservoir for both biology and nutrients.
Rice husk biochar, produced by farmers in coastal Andhra Pradesh and Tamil Nadu, is an excellent and low-cost local option. When mixed with compost and Jeevamrutha before application, it demonstrates measurable improvements in water retention, cation exchange capacity, and microbial biomass.
Application rate: 500 kg to 1 tonne per acre is a practical starting point, ideally mixed with compost to ensure the biochar is pre-charged before application.
Organic Matter Additions: Compost, Vermicompost, and Farm Waste
Organic matter is the currency of soil fertility. Every practice in natural farming ultimately aims to increase the organic matter content of the soil, which drives everything from water retention to nutrient cycling to biological diversity.
Compost made from a mixture of green and dry organic waste — kitchen scraps, crop residues, cattle dung, and leaf litter — is a cornerstone of natural farming. Well-made compost introduces billions of beneficial microbes per gram, adds stable organic matter, and provides a balanced spectrum of nutrients.
Vermicompost, produced by earthworms processing organic waste, is even richer in microbial activity and plant growth hormones called auxins and cytokinins. Many state governments in India, including Karnataka, Maharashtra, and Odisha, offer subsidies for vermicompost units under schemes like the National Mission for Sustainable Agriculture (NMSA) and Paramparagat Krishi Vikas Yojana (PKVY).
Soil Testing and Observation: Know Your Land
Restoration is most effective when it is informed. Natural farmers are encouraged to combine two complementary approaches to understanding their soil:
Laboratory soil testing: At minimum, a soil test for pH, organic carbon, available nitrogen, phosphorus, and potassium, conducted every two to three years, gives a scientific baseline. Soil testing is available free or at minimal cost through Krishi Vigyan Kendras (KVKs) and state agriculture department laboratories across India.
Field observation: Walk your land regularly. Notice where water pools after rain, where plants grow more vigorously, where the soil is darker. Dig small pits and observe the colour, texture, and smell of soil at different depths. Count earthworms. These observations, accumulated over seasons, build an understanding of your specific land that no laboratory report can fully provide.
Restoration is a journey, not a destination. But every season of correct practice moves the soil in the right direction — building organic matter, nurturing biology, and creating the conditions for a farm that works with nature rather than against it.
Next week, we shift from soil to seeds — exploring the profound importance of indigenous varieties and how the loss of crop diversity has left our food system dangerously fragile.