Soil Conservation and Sustainable Soil Health Management Strengthen Agricultural Productivity, Climate Resilience and Food Security in India

Recent Developments:

• The nationwide Khet Bachao Abhiyan (1–30 June 2026) was launched by the Ministry of Agriculture & Farmers' Welfare, ICAR and partner institutions to promote soil-test-based nutrient management, balanced fertiliser application, natural farming and climate-resilient agriculture through awareness campaigns and farmer outreach programmes.
• The Soil Health Card Portal has been further strengthened with digital soil maps, multilingual access, automated nutrient recommendations and integration with land records to improve scientific soil management.

About Soil:

Meaning and Characteristics:

• Soil is a dynamic natural body consisting of minerals, organic matter, water, air and living organisms, formed through long-term physical, chemical and biological processes.
• Soil develops distinct soil horizons due to additions, removals, transfers and transformations of materials over time, forming a complete soil profile.
• The major soil horizons are O (Organic), A (Topsoil), E (Eluviation), B (Subsoil), C (Parent Material) and R (Bedrock).
• Healthy soil performs essential ecosystem functions by supporting plant growth, regulating water movement, recycling nutrients, storing carbon and filtering pollutants.

Soil Diversity in India:

Major Soil Types and Distribution:

• India's diverse climate, geology, topography and vegetation have produced a wide variety of soils that support region-specific agricultural systems.
• The major soil groups include Alluvial, Black (Regur), Red, Laterite, Desert, Forest & Mountain, Saline & Alkaline and Peaty & Marshy soils.
• Soil diversity enables crop diversification, higher agricultural resilience and efficient utilisation of regional agro-climatic conditions, thereby strengthening national food security.

Importance of Soil:

Agricultural and Economic Importance:

• Soil forms the foundation of Indian agriculture, with nearly 59% of India's geographical area under cultivation, while agriculture supports the livelihoods of a large share of the rural population.
• Healthy soils improve crop productivity, nutrient-use efficiency, farm profitability and long-term agricultural sustainability.
• Sustainable soil management directly contributes to Sustainable Development Goal (SDG)-2 (Zero Hunger) and SDG-13 (Climate Action).

Ecological and Environmental Importance:

• Healthy soils function as natural reservoirs by recharging groundwater, retaining moisture during dry periods and reducing surface runoff, thereby strengthening water security.
• Soil serves as an important carbon sink by storing atmospheric carbon in the form of Soil Organic Carbon (SOC), thereby mitigating climate change.
• Higher soil carbon improves soil structure, fertility, moisture retention, nutrient availability and resilience against drought and climate variability.
• Soil supports rich biodiversity, including microorganisms, fungi, earthworms and beneficial insects, which regulate nutrient cycling involving nitrogen, phosphorus and sulphur.

Major Challenges Affecting Soil Health:

Land Degradation and Soil Erosion:

• Water erosion and wind erosion remove fertile topsoil every year, significantly reducing agricultural productivity.
• Severe water erosion is observed in the Himalayan Region, Western Ghats and Chambal Ravines, resulting in large-scale land degradation.

Nutrient Imbalance and Soil Degradation:

• Excessive and imbalanced use of chemical fertilisers has caused widespread deficiencies of important micronutrients such as Zinc, Boron and Iron.
• Faulty irrigation practices, particularly excessive canal irrigation in Punjab, Haryana and Western Uttar Pradesh, have accelerated soil salinisation and alkalinisation through capillary action.

Urbanisation and Pollution:

• Rapid urbanisation has exposed soils to industrial effluents, mining wastes, excessive agrochemicals, heavy metals and plastic pollution.
• Declining Soil Organic Carbon due to continuous cultivation and residue burning has reduced soil fertility and weakened climate resilience.

Major Government Initiatives:

National Missions and Soil Conservation Programmes:

• The National Mission for Green India, under the National Action Plan on Climate Change (NAPCC), promotes afforestation and enhances natural carbon sinks, supporting India's Nationally Determined Contributions (NDCs).
• The National Mission for Sustainable Agriculture promotes climate-resilient farming through improved soil health, water-use efficiency and resource conservation.
• The National Mission on Natural Farming (2024) encourages nature-based agriculture by increasing Soil Organic Carbon, reducing input costs and improving climate resilience.

Soil Health and Nutrient Management:

• The Soil Health and Fertility Scheme (2015) promotes scientific nutrient management through Soil Health Cards, balanced fertiliser application and farmer capacity building.
• The Nutrient-Based Subsidy (NBS) Scheme links subsidies for Phosphatic and Potassic fertilisers to nutrient content, encouraging balanced fertiliser use.
• Neem-Coated Urea improves nitrogen-use efficiency while reducing diversion of urea for non-agricultural purposes.
• Direct Benefit Transfer (DBT) in fertilisers uses Aadhaar-enabled Point of Sale (PoS) devices for beneficiary authentication and real-time fertiliser tracking.
• The Integrated Fertiliser Management System (iFMS) strengthens fertiliser logistics, monitoring and supply-chain efficiency.

Recent Digital and Technological Initiatives:

• The Khet Bachao Abhiyan (2026) promoted soil testing, balanced nutrient management, natural farming and climate-resilient agricultural practices through nationwide farmer awareness programmes.
• The Nationwide Soil Resource Mapping Project of Soil and Land Use Survey of India (SLUSI) prepares village-level soil maps using satellite imagery and field surveys for scientific land-use planning.
• Agri Stack, under the Digital Agriculture Mission, integrates farmer, land, crop and soil databases to provide location-specific agricultural advisories.

Role of Emerging Technologies:

Artificial Intelligence and Precision Agriculture:

• Artificial Intelligence (AI) integrates soil, weather and crop data to support scientific crop planning, nutrient management and precision farming.
• Satellite imagery, remote sensing and geospatial technologies enable early identification of nutrient deficiencies, moisture stress and soil degradation.
• AI-based Krishi Decision Support System (KDSS) improves decision-making through data-driven recommendations for irrigation, fertiliser application and crop management.
• Agricultural robotics, including autonomous tractors, robotic soil sampling systems and precision planting technologies developed by ICAR-IARI and other institutions, enhance resource-use efficiency and reduce production costs.

Way Forward:

Priority Areas for Sustainable Soil Management:

• Promote Integrated Nutrient Management (INM) by combining chemical fertilisers with organic manures, biofertilisers and crop residue recycling.
• Expand soil-test-based fertiliser application, precision agriculture and digital advisory systems across all agro-climatic regions.
• Strengthen watershed development, afforestation and conservation agriculture to minimise soil erosion and restore degraded lands.
• Enhance carbon farming, regenerative agriculture and payment mechanisms through Carbon Credit Trading to improve farmer income and climate resilience.
• Increase investment in soil research, geospatial monitoring and farmer awareness for long-term conservation of India's soil resources.

Value Addition for UPSC:

Important Concepts and Institutional Linkages:

• Soil Organic Carbon (SOC): A key indicator of soil health, fertility and carbon sequestration.
• Integrated Nutrient Management (INM): Balanced use of chemical fertilisers, organic manures and biofertilisers to sustain soil productivity.
• Land Degradation Neutrality (LDN): India aims to restore degraded land while achieving sustainable land management under the United Nations Convention to Combat Desertification (UNCCD).
• National Action Plan on Climate Change (NAPCC): Includes the National Mission for Green India and the National Mission for Sustainable Agriculture, both contributing to soil conservation.
• GS Paper III Linkages: Agriculture, Land Resources, Environment, Climate Change, Disaster Management, Science & Technology and Sustainable Development.
• Keywords: Soil Health, Soil Organic Carbon, Carbon Sequestration, Soil Health Card, Integrated Nutrient Management, Precision Agriculture, Agri Stack, Natural Farming, Land Degradation Neutrality, Climate-Smart Agriculture, Regenerative Agriculture, Soil Conservation.