Eduphoria - An International Multidisciplinary Magazine

Introduction

Soil health is fundamental to sustainable agriculture, influencing food production, water retention, and ecosystem stability. As global concerns about soil degradation and climate change intensify, regenerative farming has emerged as a promising approach to restore and maintain healthy soils. Unlike conventional practices that often degrade soil through chemical inputs, monoculture cropping, and deep tillage, regenerative techniques aim to enhance the biological, physical, and chemical properties of the soil.

Regenerative farming involves a variety of practices, including cover cropping, no-till or reduced tillage, crop rotation, organic amendments like compost, agroforestry, and managed grazing. These techniques work together to increase soil organic matter, improve soil structure, and promote a thriving soil microbiome. Cover crops protect the soil from erosion, add organic material, and improve nutrient cycling. Leguminous cover crops, for example, fix atmospheric nitrogen, reducing the need for synthetic fertilizers while enriching the soil naturally. No-till farming minimizes soil disturbance, preserving beneficial microbial communities and preventing the loss of organic carbon to the atmosphere. Over time, this leads to improved soil aggregation and better water infiltration. Crop rotation supports soil health by disrupting pest and disease cycles and enhancing nutrient availability. It allows for the cultivation of deep-rooted plants that break up compacted soils and improve subsoil structure. Meanwhile, compost application increases microbial activity, boosts nutrient content, and enhances the soil’s ability to retain moisture—critical in the face of increasing droughts and erratic rainfall patterns. Managed grazing, when carefully controlled, can regenerate grasslands, add nutrients through manure, and promote root growth that stabilizes soil. Together, these practices help build soil organic carbon, a key indicator of soil fertility and resilience. The consequences of these techniques are largely positive. Soils under regenerative management typically show higher organic matter, greater water-holding capacity, improved nutrient cycling, and enhanced biological diversity. These changes not only support healthy crop growth but also reduce the need for external inputs like fertilizers and pesticides. While transitioning to regenerative methods may involve short-term challenges, such as learning new techniques or adjusting to different planting cycles, the long-term benefits to soil health are substantial. In the face of climate stress and growing food demands, regenerative agriculture offers a viable pathway toward restoring soil and building resilient farming systems.

Regenerative farming techniques 

Regenerative techniques to maintain soil health include no till or reduced, cover cropping, crop rotation, reduced tillage, composting, agroforestry, rotational grazing, mulching, and integrating livestock. These methods enhance soil organic matter, promote biodiversity, reduce erosion, improve water retention, and support beneficial microbes, leading to resilient, fertile soils and sustainable agriculture. Together, they restore degraded lands and contribute to long-term ecosystem health. Regenerative techniques can be categorised into soil health and fertility, animal integration, crop diversity, water and ecosystem management (table 01).

Table 01

A.  Regenerative techniques to maintain soil health and fertility

i. No-till (or reduced-tillage)

No-till (or reduced-tillage) is a core regenerative practice that enhances soil health and fertility by minimizing soil disturbance. Instead of conventional ploughing, seeds are directly drilled into intact soil covered by the residue of previous crops. This method preserves the soil structure, maintaining stable aggregates and pore spaces critical for water infiltration, root growth, and air circulation. An intact structure also helps suppress erosion by wind and water—no-till fields can reduce soil loss by up to 90% compared to conventional tillage. By keeping crop residues on the surface, no-till systems build organic matter over time. This not only boosts fertility and water-holding capacity but also acts as a carbon sink, sequestering atmospheric CO₂ in the soil. Beneficial microbes, fungi, and earthworms thrive in this environment—enhancing nutrient cycling, forming soil aggregates, and enriching fertility naturally. Additionally, the mulch layer moderates surface temperature and reduces moisture loss, improving drought resilience and reducing irrigation needs. While no-till might sometimes require more herbicide or careful crop selection, its multifaceted benefits—enhanced soil stability, fertility, biodiversity, and climate mitigation—make it a cornerstone of regenerative soil health. No till farming is useful to Protects soil structure and prevents erosion, builds organic matter and locks in carbon, supports thriving soil biology and nutrient cycling and Improves moisture retention and climate resilience.

No till farming

ii. Cover cropping

Cover cropping is a powerful regenerative tool to enhance soil health and fertility by keeping living roots and organic mulch active year-round. It involves planting fast-growing annuals—such as legumes (clover, vetch), grasses (rye, oats), and brassicas (radish, mustard)—during fallow or between cash crops. These plants offer various benefits. Dense root networks anchor soil, while surface cover cushions against rain and wind—reducing erosion by up to 90%. Roots and biomass add 15–30% more organic matter in just a few seasons, boosting fertility, moisture retention, and soil carbon. Legumes convert atmospheric nitrogen into plant-available forms (50–150 lb N/acre), while deep-rooted grasses and brassicas recycle phosphorus and potassium from lower soil layers. Living roots feed beneficial microbes and fungi year-round, increasing earthworm presence 2–4 × versus bare fields. A multi-species mix maximizes these synergies, delivering healthier soil, reduced inputs, and improved resilience—making cover cropping a cornerstone of regenerative soil management.

Cover cropping

Figure: Showing benefits of cover cropping

iii. Composting in regenerative farming

Composting in regenerative farming recycles organic waste—food scraps, manure, crop residues—back into the soil, boosting organic matter, structure, and fertility. Rich in slow-release nutrients (N, P, K), compost enhances water retention, reduces erosion, and suppresses pathogens by feeding a diverse soil microbiome, including bacteria, fungi, and worms. It also increases carbon sequestration, turning degraded soils into carbon sinks while cutting methane emissions from landfills. Consequences include healthier, resilient soils requiring fewer synthetic inputs and improved crop yields. Challenges: compost must be mature to avoid pathogens, and its quality must be managed, but the payoff is robust soil health, climate mitigation, and sustainable, regenerative agriculture.

Compost prepared by bio products

iv. Biochar

Biochar is a carbon-rich, porous charcoal made via pyrolysis of biomass under low-oxygen conditions. Incorporated into soil, it enhances structure, aeration, water retention, and nutrient-holding capacity (CEC), reducing leaching and improving drought resilience. It creates habitats for beneficial microbes and mycorrhizal fungi, boosting microbial diversity and nutrient cycling. Biochar also raises pH in acidic soils and binds heavy metals and pathogens. Most importantly, it sequesters carbon for centuries, mitigating climate change and preventing greenhouse gas release. Its consequences: healthier, more resilient soils and improved crop yields, with reduced reliance on synthetic inputs. Caveats include cost, feedstock quality, and correct application rates to avoid pH imbalance or microbial suppression.

Biochar

v. Green manuring

Green manuring is a regenerative farming technique that involves growing cover crops—often legumes like clover or vetch—and ploughing them into the soil while still green to boost soil health. It fixes nitrogen naturally, enhances organic matter, improves structure, porosity, water-holding capacity, and suppresses weeds through rapid canopy cover. As residues decompose, they feed diverse microbes, boost nutrient cycling, reduce erosion and nutrient leaching, and sequester carbon. The outcomes: richer, resilient soil requiring fewer synthetic inputs and supporting higher yields. Drawbacks include time-intensive management, use of land and moisture, risk of nitrogen immobilization or nutrient over-fixation, pest habitat, and delayed benefits if poorly timed. Green manuring involves using fast-growing cover crops that are incorporated into the soil while still green to enhance soil fertility and structure. Here are common plants used for green manuring, categorized by type: Leguminous Plants (Nitrogen-fixers) These plants host nitrogen-fixing bacteria in their root nodules, adding natural nitrogen to the soil:

1. Sunn hemp (Crotalaria juncea)

2. Dhaincha (Sesbania aculeata)

3. Cowpea (Vigna unguiculata)

4. Berseem (Trifolium alexandrinum)

5. Lablab (Lablab purpureus)

6. Guar (Cyamopsis tetragonoloba)

7. Mung bean (Vigna radiata)

8. Fava beans (Vicia faba)

9. Alfalfa (Medicago sativa)

10. Hairy vetch (Vicia villosa)

Non-Leguminous Plants

These are used for biomass, soil structure improvement, and weed suppression:

1. Mustard (Brassica spp.)

2. Buckwheat (Fagopyrum esculentum)

3. Ryegrass (Lolium multiflorum)

4. Sorghum-sudangrass (Sorghum bicolor x S. sudanense)

5. Oats (Avena sativa)