The silent crisis beneath: A comprehensive review of soil health degradation in intensive agroecosystems with a special focus on India

Introduction 1.1 The Silent Crisis: Global Soil Health in the Anthropocene

Soil underpins the global food system, regulates the carbon cycle, and supports most terrestrial biodiversity-yet it is essentially non-renewable on human timescales (Kraamwinkel et al., 2021; Lal, 2025) [15,17] . With world population projected to reach 9.7 billion by 2050, the pressure on this finite resource is intensifying. The Food and Agriculture Organization's latest Status of the World Soil Resources (2025 update) estimates that 33 percent of global soils are already moderately to severely degraded by erosion, salinization, compaction, acidification, and chemical pollution (Smith et al., 2024) [26] . www.extensionjournal.com

The trade-off is stark: global cereal production tripled between 1960 and 2020, but soil organic carbon and micronutrient stocks declined across much of the same land. Recent meta-analyses estimate that 100 billion tonnes of fertile soil are lost each year to unsustainable farming-10 to 40 times faster than natural pedogenesis can rebuild it (FAO, 2024). The problem extends well beyond crop yields. Degraded soils lose their capacity to sequester carbon, feeding back into climate change rather than buffering against it (Efthimiou, 2025) [4] .

Historical Evolution: The Green Revolution and its Shadow

Understanding current soil conditions in the Global South requires some historical context. The Green Revolution of the mid-1960s was a direct response to the threat of famine in countries like India. It introduced high yielding varieties (HYVs) of wheat and rice, increased irrigation facilities and popularized the use of synthetic manure (mainly N-P-K) and pesticides.

The Green Revolution did allow food production to expand without converting millions of additional hectares of forest to farmland, but it altered the soil ecosystem in the process.

Pre-Revolution agriculture relied on organic manures, crop rotation, and periodic fallowing, which maintained baseline soil biological activity. The rice-wheat monocultures that followed on the Indo-Gangetic Plains replaced that diversity with near-total dependence on synthetic inputs. By the 2020s, the model was showing clear signs of exhaustion. Long-term fertilizer experiments in India show that the agronomic efficiency of nitrogen fell from 13.4 kg grain per kg N in 1970 to just 3.7 kg grain per kg N by 2020 (ICAR-IIFSR, 2024) [11] . Diminishing returns of this magnitude are not a fertilizer problem-they indicate that the soil's physical and biological capacity to convert inputs into yield has been fundamentally compromised. The result is the current era of second-generation soil problems: yield stagnation alongside rising input costs and growing environmental contamination.

Defining Soil Health: A Tri-Partite Framework

Treating soil as a chemical bank-a store of N, P, and K to be drawn down and topped up-has long been recognized as insufficient. Modern soil science defines soil health as the capacity of a soil to function as a living ecosystem that sustains plants, animals, and people over time. That capacity depends on three interdependent sets of indicators: Physical Indicators: These are those that control the structure of the soil. Important parameters are bulk density, which influences root penetration; the aggregate stability which defines resistance to erosion and crusting; and infiltration rate which defines water use efficiency. Surface sealing and the development of subsurface "plough pans" in intensive tillage systems has been caused by the destruction of macro-aggregates. Chemical Indicators: These have long been the most attended. These are pH, Electrical Conductivity (EC), Cation Exchange Capacity (CEC) and availability of macronutrients/micronutrients. The stoichiometric imbalance or the disruption of natural ratios (i.e., C: N, N:P) of microbial mineralization processes is also a critical modern issue. Biological Indicators: The most sensitive and least attended to. These are Soil Organic Carbon (SOC) pools (labile vs. recalcitrant), microbial biomass carbon (MBC) and enzymatic activities (e.g., dehydrogenase, phosphatase). The latest studies stress that biological markers tend to be the earliest warning mechanisms displaying the signs of degradation long before the chemical or physical alterations can be detected (He and Du, 2023; Purohit et al., 2024) [10,22] .

Soil Health and the Sustainable Development Goals

Soil health has direct bearing on several of the United Nations Sustainable Development Goals (SDGs). SDG 2 (Zero Hunger): This is directly connected to the availability of nutrients. Poor soils yield crops of lower healthy content (hidden hunger) and deficiency of micronutrients in the human body (e.g., Zinc and Iron deficiency). SDG 13 (Climate Action): Soils comprise the second largest active pool of carbon on planet earth after the oceans. The sequestration rate of degraded agricultural soils can be 0.9-1.85Pg C/y, which can compensate a large part of anthropogenic emissions in the world (Lal et al., 2023) [18] . On the contrary, further degradation emits accumulated carbon and CO2 as well as methane (CH4). SDG 15 (Life on Land): It is aimed at fighting the desertification process and preventing land degradation. The presence of healthy soils, micro-flora up to macro-fauna, would help sustain the ecosystems through the support of the terrestrial biodiversity.

The Indian Context: The Crisis in the Indo-Gangetic Plains

India concentrates many of the global soil crisis's pressures into a relatively small area-high population density, intensive cropping, and climate vulnerability together. The Indo-Gangetic Plains (IGP), spanning Punjab, Haryana, and Uttar Pradesh, produces roughly 50% of India's grain buffer and is the primary food-producing region of South Asia. The data from that region are not encouraging.

Causes of Soil Health Degradation

Soil degradation in intensive agroecosystems is not caused by any single event but by the accumulation of physical, chemical, and biological pressures over decades of highinput agriculture. This section examines the six primary drivers of decline, with particular attention to the Indo-Gangetic Plains (IGP).

Nutrient Depletion and Stoichiometric Imbalance

The primary driver of yield stagnation in Indian agriculture is nutrient mining: crop nutrient removal consistently outpaces replenishment.

Mechanisms of Nutrient Mining

Modern high-yielding varieties (HYVs) are nutrientintensive. In the Rice-Wheat System (RWS) prevalent in North India, a typical annual harvest (yielding ~7 t ha⁻¹ rice and ~5 t ha⁻¹ wheat) removes approximately 300 kg Nitrogen (N), 30 kg Phosphorus (P), and 300 kg Potassium (K) per hectare from the soil profile (ICAR-IIFSR, 2024) [11] . While N and P are partially replenished through synthetic fertilizers (Urea and DAP), Potassium is largely neglected. Consequently, Indian soils are undergoing a "silent K crisis," with net negative balances estimated at 10 million tonnes of K annually (Kaduwal et al., 2023) [13] . NPK Imbalance: The ideal N:P: K application ratio for cereal crops is 4:2:1. However, distorted subsidy policies favouring Urea have skewed this ratio dramatically. Recent soil testing data (2024-2025) from Punjab and Haryana reveals actual application ratios averaging 11.8:4.6:1, and in some districts reaching as high as 30:8:1 (FAO, 2025) [5] . This stoichiometric imbalance disrupts microbial mineralization, as soil microbes require balanced Carbon (C) and Nitrogen (N) ratios to decompose organic matter efficiently.

Micronutrient Deficiencies ("Hidden Hunger")

The exclusive focus on macronutrients has stripped soils of essential trace elements. The All India Coordinated Research Project (AICRP) on Micro-and Secondary Nutrients (2025 report) highlights critical deficiencies:  Zinc (Zn): 38% of Indian soils are deficient, directly impacting crop immunity and grain quality.  Boron (B): 37% deficiency, affecting reproductive growth in pulses and oilseeds.  Iron (Fe) & Sulphur (S): Rising deficiencies (12-29%) due to the shift away from sulphur-containing fertilizers like Single Super Phosphate (SSP).

Soil Erosion and Organic Matter Loss

Soil erosion is the physical displacement of the topsoil-the most biologically active layer rich in organic carbon and nutrients.

Quantitative Losses

India suffers from one of the highest erosion rates globally. This has resulted in SOC levels in the IGP plummeting to 0.3-0.4%, far below the 1% threshold required for sustaining soil aggregates.

Agrochemical Overuse and Toxicity

Heavy reliance on synthetic chemicals has altered the soil's biochemical environment, leaving it loaded with persistent toxic residues.

Pesticide Persistence

India is the second-largest consumer of pesticides in Asia.

In 2023-24, herbicide consumption (particularly Glyphosate and Pendimethalin) surged to replace manual weeding.

Residues of these chemicals bind to soil colloids and persist for months. Studies indicate that Glyphosate residues inhibit the activity of dehydrogenase and urease enzymes, which are critical proxies for overall microbial metabolic activity (Shekhawat et al., 2022) [23] . Furthermore, these chemicals disrupt the signalling pathways of beneficial Nitrogen-fixing bacteria (Rhizobium spp.). www.extensionjournal.com

Heavy Metal Contamination

In peri-urban agricultural belts (e.g., around Delhi, Ludhiana, Varanasi), the use of untreated industrial wastewater for irrigation has introduced heavy metals such as Cadmium (Cd), Lead (Pb), and Arsenic (As) (Sharma et al., 2007; Kumar et al., 2019) [25,2] . [30] .

Tillage and Mechanisation: The Physical degradation

The shift from bullock-drawn ploughs to heavy tractors and combine harvesters has induced severe physical degradation. Soil Compaction and the "Plough Pan": Repeated puddling (wet tillage) for rice cultivation is designed to destroy soil aggregates and reduce percolation. While beneficial for rice, it creates a high-density subsurface layer known as a plough pan at 15-20 cm depth.  Bulk Density: The bulk density in the plough pan often exceeds 1.65 g cm⁻³, effectively functioning as a concrete barrier.  Root Restriction: This layer restricts the root growth of subsequent crops like wheat, confining them to the top 15 cm and making them susceptible to lodging and water stress (Yadav et al., 2025) [29] .

Energy-Carbon Trade-offs

Intensive tillage accelerates the oxidation of SOC. Conventional Tillage (CT) exposes soil carbon to atmospheric oxygen, releasing it as CO₂. It is estimated that shifting from Conventional Tillage to No-Till (NT) can sequester 0.4-0.8 t C ha⁻¹ yr⁻¹ (Lal et al., 2023) [18] , yet adoption remains low due to machinery constraints.

Monoculture Systems and Biological Vacuum

The Rice-Wheat cropping sequence has been practiced continuously on ~10.5 million hectares in the IGP for over four decades.

Feedback Loops

Monoculture violates the ecological principle of diversity.  Pathogen Buildup: Continuous cropping of cereals selects for specific soil-borne pathogens, such as the Cereal Cyst Nematode (Heterodera avenae) and Fusarium wilt, which thrive in the absence of break crops.  Allelopathy: Crop residues from certain varieties release allelochemicals (e.g., phenolics from decomposing rice straw) that can inhibit the germination of the succeeding wheat crop if not managed properly.  Functional Redundancy: Monoculture reduces the diversity of the soil microbiome. A diverse microbiome has "functional redundancy," meaning if one species is lost, another takes over its role. In simplified RWS soils, this resilience is lost, making the system fragile to climate shocks.

Salinity and Water Mismanagement

Salinity is the accumulation of soluble salts, while sodicity is the dominance of exchangeable sodium. Both are expanding in the semi-arid IGP due to hydrological mismanagement.

Secondary Salinization

In canal-irrigated areas, seepage from unlined channels raises the water table. When the water table reaches within 2 meters of the surface, capillary action pulls salt-laden water up. The water evaporates, leaving white salt crusts on the surface.  Sodicity: Use of bicarbonate-rich groundwater causes soil dispersion. Sodic soils become hard when dry and sticky when wet, leading to poor infiltration (hydraulic conductivity < 0.2 cm hr⁻¹) and aeration stress.  Climate Interaction: Rising temperatures increase evapotranspiration rates, accelerating capillary rise and salt accumulation, rendering vast tracts of land barren (Lal, 2025) [17] .

Consequences of Soil Degradation

Soil degradation is not just an environmental metric. It shows up as stagnant crop yields, rising costs for farmers, declining nutritional quality in food, and accelerating environmental damage. These consequences are interconnected and self-reinforcing.

Yield Stagnation and the "Yield Gap"

The most direct consequence of soil degradation is stagnating crop yields. Despite newer varieties and higher fertilizer use, productivity across the Indo-Gangetic Plains (IGP) has plateaued. www.extensionjournal.com

The Law of Diminishing Returns Historical data from long-term fertilizer experiments (LTFE) reveals a disturbing trend: the Partial Factor Productivity (PFP) of fertilizers has plummeted. In the 1970s, applying 1 kg of NPK nutrients yielded ~13.4 kg of grain. By 2020, this efficiency dropped to just 3.7 kg grain/kg NPK (ICAR-IIFSR, 2024) [11] . This phenomenon, known as "soil fatigue," indicates that the soil's physical and biological capacity to support crop growth has been compromised.  Yield Gap: There exists a significant "yield gap"-the difference between potential yield (demonstrated in research plots) and actual farmer yields. In wheat, this gap is estimated at 1.2-1.8 t ha⁻¹ in Punjab and Haryana. This gap is no longer due to a lack of inputs, but due to the soil's inability to respond to them (ICAR-IIFSR, 2024; Mishra et al., 2024) [11,19] .

Economic costs for farmers

Soil degradation carries a significant economic cost that farmers bear largely on their own.  Rising input costs: to hold yields steady, farmers apply ever-larger amounts of fertilizers and agrochemicals, driving up the cost of cultivation. Recent economic analysis suggests that 15-20% of the cost of cultivation in the IGP is now spent on managing soil constraints (e.g., reclamation of salinity, extra micronutrients) (Cariappa & Krishna, 2024) [3] .  National Economic Loss: At a macroeconomic level, land degradation costs India an estimated 2.5% of its GDP annually. This includes direct losses from reduced crop output and indirect costs such as silting of reservoirs and loss of biodiversity (FAO, 2025) [5] .

Nutritional decline and human health ("hidden hunger")

Soil quality and human nutrition are directly connected.

Intensive cropping on depleted soils produces what researchers call the "dilution effect": grain yields remain high, but the concentration of micronutrients per kilogram of grain falls.

Micronutrient Malnutrition

 Zinc and Iron: As soil Zinc (Zn) and Iron (Fe) pools are mined, their translocation into the grain decreases. Analysis of wheat grains from the IGP shows a 17-28% decline in Zn and Fe content over the last 50 years. This directly correlates with the high prevalence of Zn deficiency (stunting) and Fe deficiency (anaemia) in the Indian population, particularly among women and children (Lal, 2025; Zeeshan Manzoor et al., 2024) [17,30] .  Heavy Metal Toxicity: In peri-urban areas irrigated with wastewater, the bioaccumulation of Cadmium (Cd) and Lead (Pb) in vegetables poses a severe cancer risk. Crops grown on these soils often exceed the Codex Alimentarius safety limits for heavy metals (Zeeshan Manzoor et al., 2024) [30] . [18] .

Environmental consequences and greenhouse gas emissions

Remedial Measures: Science, Practice, and Policy

Restoring degraded agroecosystems requires moving away from the logic of simply adding more inputs. There is no single fix-effective remediation combines physical conservation, nutrient management, biological restoration, and digital diagnostics. This section evaluates these interventions based on long-term trial data from 2020-2025. [19,14] . Diversifying RWS with crops like mungbean also enriches soil fertility through biological nitrogen fixation and increases the system's overall protein output (Gora et al., 2022; Gathala et al., 2022) [8,6] .

Conservation

Scientific Mechanism

 Aggregate Stability: No-till (NT) systems preserve the structural integrity of soil macro-aggregates (>0.25 mm). The absence of mechanical pulverization allows fungal hyphae and glomalin (a soil protein) to bind soil particles, protecting Soil Organic Carbon (SOC) from microbial oxidation.  Thermal Regulation: Surface residue acts as an insulating mulch, moderating soil temperature fluctuations. In the heat-stressed Indo-Gangetic Plains (IGP), residue retention lowers maximum soil temperature by 2-4°C during the critical grain-filling stage of wheat, reducing terminal heat stress (Kaduwal et al., 2023) [13] .

Evidence from

Limitations

The main practical barrier is the transition period. Farmers typically see a yield drag of 5-8% in the first 2-3 years, as soil microbes immobilize nitrogen while decomposing the high-C:N rice straw. Yields generally recover once soil biological activity stabilises.

Integrated Nutrient Management (INM): Restoring Stoichiometry

INM moves beyond the N-P-K paradigm to manage the "soil nutrient bank" holistically, integrating inorganic fertilizers with organic amendments.

Scientific Mechanism

 Cation Exchange Capacity (CEC): Organic amendments (FYM, compost) increase the soil's CEC, essentially expanding the "pantry size" of the soil to hold nutrients like K⁺, Ca²⁺, and Mg²⁺, preventing leaching.  Nutrient Synchrony: Unlike synthetic fertilizers which release nutrients in a pulse (often exceeding plant uptake rates), organic sources mineralize slowly, matching the crop's uptake curve.

Emerging Mineral Interventions:

Recent research (2024) highlights the efficacy of Polyhalite, a natural multi-nutrient mineral (K₂Ca₂Mg (SO₄) ₄•2H₂O). Unlike Muriate of Potash (MOP) which supplies only K and Cl, Polyhalite addresses the widespread S, Ca, and Mg deficiencies in the IGP. Trials in rice-wheat systems show that substituting MOP with Polyhalite improved root volume by 2.64% and K uptake by 30%, rectifying the stoichiometric imbalance (Sheoran et al., 2024) [24] .

Soil Biological Management: Engineering the Microbiome

The most research-active area in soil remediation is the microbiome. Restoring soil function means restoring its living component. Plant Growth Promoting Rhizobacteria (PGPR) and bio-inoculants containing strains like Azotobacter, Pseudomonas, and Bacillus are being used to "unlock" unavailable nutrients. Furthermore, long-term fertilization coupled with rhizobium inoculation has been proven to remodel soil bacterial community compositions, promoting niche reconstruction that naturally suppresses pathogen buildup (Wei et al., 2023; Purohit et al., 2024) [28,22] .

Plant Growth Promoting Rhizobacteria (PGPR): Bioinoculants containing strains like Azotobacter, Pseudomonas, and Bacillus are being used to "unlock" www.extensionjournal.com unavailable nutrients.  Mechanism: These bacteria produce organic acids (gluconic, citric) that solubilize fixed phosphorus (making it available to plants) and synthesize siderophores that chelate iron.  Evidence: Application of liquid bio-fertilizers in wheat has shown to save 20-25 kg N ha⁻¹ without yield penalty.

Arbuscular Mycorrhiza Fungi (AMF): AMF form a symbiotic relationship with plant roots, extending the depletion zone of the rhizosphere.

 Mechanism: Fungal hyphae can explore soil pores too small for root hairs, accessing phosphorus and water from the micropores.  Impact: In zinc-deficient soils of Punjab, AMF inoculation increased grain Zn concentration by 12-15%, offering a biological solution to the "hidden hunger" problem. [22,19] .

Digital Soil Health Monitoring: Precision Diagnosis

The traditional "grid sampling" method is labour-intensive and slow. The integration of Remote Sensing (RS Recent Advances (2024-2025): Studies have successfully mapped Soil Organic Carbon (SOC) stocks at a regional scale with high accuracy (R² > 0.84) using hyperspectral imaging (Gouda et al., 2024) [9] . This allows for Variable Rate Technology (VRT), where fertilizer spreaders adjust rates automatically based on the digital soil map, preventing overuse in fertile zones and under-use in degraded zones.

Climate-Smart Soil Practices

Adapting soil management to the reality of climate change.

Biochar Application: Biochar is a carbon-rich solid produced by pyrolysis (thermal decomposition of biomass in low oxygen).

 Mechanism: Biochar is highly recalcitrant (stable for 100s of years) and has a massive surface area. It acts as a "soil reef," providing habitat for microbes and increasing water holding capacity (WHC).  Impact: In sandy loam soils, biochar application has been shown to increase WHC by 18%, critical for drought resilience (Purohit et al., 2024) [22] .

Laser Land Levelling: A physical intervention that eliminates micro-relief (undulations).

 Impact: Precise levelling improves water distribution uniformity, increasing Water Use Efficiency (WUE) by 25-30% and reducing nutrient leaching.

Policy Frameworks and Indian Initiatives

Shifting Indian agriculture toward soil-restorative practices is as much a governance problem as a scientific one. Several national schemes have been launched to address soil degradation, but the gap between policy design and fieldlevel uptake remains wide.

The Soil Health Card (SHC) Scheme: A Critical Review

Launched in 2015, the SHC scheme is the world's largest soil testing program, aiming to provide every farmer with a nutrient status report and fertilizer recommendations every three years. A 2024 impact study by the National Institute of Agricultural Economics and Policy Research (NIAP) revealed mixed results. In regions where adopted, farmers optimized chemical fertilizers, reducing urea use by up to 9%, which subsequently improved paddy and wheat yields by 5-6% (Kumar et al., 2023; Jayalakshmi et al., 2021) [16,12] . However, in the intensive IGP belt, adoption rates remain low (<30%). The primary bottlenecks include "blanket recommendations," delays of up to six to eight months in receiving test results remain low (<30%). The primary bottlenecks are the "blanket recommendations" which often fail to account for site-specific variability, and the lack of reliable supply chains for recommended micronutrients (Zinc, Boron) at local cooperatives (FAO, 2025) [5] . c. Data Quality: Critics argue that the grid sampling method (one sample per 2.5 ha in irrigated areas) is too coarse to capture the spatial variability of soil properties, leading to "averaging errors" in fertilizer advisories.

National Mission on Natural Farming (NMNF)

Recognizing the ecological costs of chemical farming, the Indian government has pivoted towards "Bharatiya Prakritik Krishi Paddhati" (Natural Farming).

 Policy Target: The mission aims to convert 7.5 lakh hectares to natural farming by 2026.  Scientific Validation: Preliminary data from ICAR trials (2023-2025) [1] suggests that while Natural Farming (NF) leads to an initial yield penalty of 15-20% in cereals, it significantly enhances soil biological quality. Microbial Biomass Carbon (MBC) and earthworm density were found to be 2-3 times higher in NF plots compared to conventional ones. The policy challenge lies in supporting farmers through the 3-5 year transition period where yields dip before stabilizing.

Carbon Credit Markets: The New Frontier

The "Carbon Credit Trading Scheme" (2023) creates a legal framework for voluntary carbon markets in India.  Potential: Indian soils have the technical potential to sequester 20-25 Tg C yr⁻¹ through improved management. This represents a significant monetization opportunity for farmers.  Barriers: Currently, the market is inaccessible to smallholders due to high Monitoring, Reporting, and Verification (MRV) costs. A survey of 841 farmers in 2024 revealed that 99% had no access to carbon markets, citing complexity and lack of aggregators as primary hurdles (Cariappa & Krishna, 2024) [3] .

Future Research Gaps and Way Forward

While our understanding of soil degradation is robust, significant knowledge gaps persist, particularly regarding deep-soil processes and the scalability of solutions. 6.1 Beyond the Topsoil: Deep Carbon Sequestration 90% of soil sampling is restricted to the top 0-15 cm. However, recent evidence suggests that subsoil (30-100 cm) plays a critical role in long-term carbon storage.  Research Gap: We lack data on the stability of Deep Soil Organic Carbon (DSOC) in the IGP. Deep-rooted crops and agroforestry systems can deposit carbon into these lower horizons where it is protected from microbial oxidation. Future research must quantify these deep pools to accurately calculate national carbon inventories.

AI-Driven Hyper-Local Advisory

The current resolution of soil maps is insufficient for precision agriculture.  Way Forward: Developing "Digital Twins" of agricultural fields using hyper-spectral drone imagery and Internet of Things (IoT) sensors. Research should focus on low-cost, handheld spectral sensors that allow farmers to test soil N-P-K in real-time, bypassing the 2week delay of laboratory testing.

The "Soil-Gut" Microbiome Axis

There is emerging evidence linking soil biodiversity to the human gut microbiome.

 Hypothesis: Crops grown in biologically diverse soils may recruit a specific epiphytic microbiome that, when consumed, enriches the human gut flora. This "Soil-to-Gut" pathway remains largely unexplored and represents a revolutionary frontier connecting agriculture directly to public health.

Standardization of "Regenerative" Metrics

The term "Regenerative Agriculture" is currently ill-defined and unregulated.

 Need: Establishing a unified "Soil Health Index" (SHI) specific to Indian agro-climatic zones. This index should integrate physical, chemical, and biological indicators into a single score (0-100), serving as the standard metric for carbon payments and "ecolabelling" of food products.

Conclusion

India's soil crisis has been building for decades but its full scale is only now becoming clear. The evidence in this review converges on one conclusion: the input-intensive model of the 20th century has reached its biological limits. Yield stagnation, widespread micronutrient deficiency ("hidden hunger"), and the continued loss of soil organic carbon are no longer warning signs-they are the current reality, and they indicate that the soil's capacity to absorb further stress is nearly spent. Addressing this will require an approach as deliberate as the Green Revolution, but aimed at the soil rather than the seed. The shift from "feeding the plant" through chemical fertilization to "feeding the soil" through integrated management is not rhetorical-it has measurable agronomic, economic, and environmental implications.  In practice, this means using AI and remote sensing for field-level soil diagnosis, deploying bio-inoculants and diversified rotations to restore biological function, and redirecting fertilizer subsidies away from urea toward broader soil health support-compensating farmers for the ecosystem services their land provides, not just the tonnes it produces.

The consequences of inaction are concrete. If current degradation trends continue, the FAO estimates that crop yields in the IGP could fall by 15-20% by 2050 due to compounding climate-soil feedbacks. Restoring soil health is, at this point, both an agronomic necessity and a longterm food security obligation to future generations.

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