Sustainable Irrigation in Agriculture: Need & Challenges

• India faces a simultaneous challenge of freshwater depletion and agricultural sustainability. With 78% of freshwater used in agriculture, unsustainable irrigation threatens both ecological integrity and rural livelihoods. Per capita water availability has declined from 5,178 m³ (1951) to a projected 1,140 m³ (2050) (CWC), pushing India into water-stress territory.

Current Status of Irrigation in India

Need For Sustainable Irrigation

• Water-Intensive Crops: Rice and sugarcane use 60% of India’s irrigation water despite being grown in water-stressed states.
• Groundwater Dependence: 64% of irrigated farming relies on groundwater, resulting in severe depletion in regions such as northwest India (CGWB).
• Low Irrigation Efficiency: Flood irrigation consumes over 3,000 litres per kilogram of rice, while drip irrigation uses just ~842 litres (ICAR).
• Limited Modern Irrigation: Only 20% of irrigated land uses micro-irrigation despite covering 50.5% of gross cropped area (MoA&FW).
• Climate-Driven Stress: 60% of rain-fed farming faces a rising risk from erratic weather, with a 20% increase in extreme events over the past two decades (IMD).

Drivers of Unsustainable Irrigation

• Free or Subsidised Electricity: In states like Punjab and Haryana, free power for irrigation encourages excessive groundwater extraction, leading to critical aquifer depletion.
• Unsuitable Cropping Patterns: Government incentives, such as the Minimum Support Price (MSP), promote water-intensive crops like rice and sugarcane in water-scarce regions, exacerbating water stress.
• Inefficient Irrigation Methods: The predominant use of flood irrigation results in 60–70% water loss through evaporation, runoff, and seepage.
• Canal Inefficiencies and Losses: Up to 40% of water is lost in canal systems due to poor upkeep, lack of lining, and water theft.
• Low Awareness and Poor Pricing Signals: Farmers lack awareness of efficient irrigation and face no cost-based incentive to save water due to flat-rate or free water pricing.

Key Challenges to Sustainable Irrigation in India

• Groundwater Overexploitation Due to Policy Incentives: Free electricity and input subsidies have led to unsustainable groundwater use, with nearly 60% of districts overexploiting aquifers (CGWB).
• MSP-Driven Water-Intensive Cropping: Government procurement policies promote crops like rice & sugarcane even in arid regions. E.g., Punjab uses over 5,000 ltrs of water per kilogram of rice (NITI Aayog).
• Disjointed Water Governance: As water is a state subject, policies remain fragmented across states. The lack of a nationally integrated water framework hinders efficient irrigation planning (NIUA).
• Limited Micro-Irrigation Coverage: Although micro-irrigation can save up to 50% of water, only 12 million hectares (~20% of irrigated land) are covered due to high costs & limited credit access (DACFW).
• Rising Climate Vulnerability: With 60% of farming dependent on rainfall, erratic monsoons and a 15% increase in extreme rain events are intensifying irrigation demand and water stress.

Strategies for Sustainable Irrigation

• Water-Efficient Technologies: Promote drip and sprinkler irrigation, which enhances water-use efficiency by 40–60%. E.g., Direct Seeded Rice (DSR) and drip fertigation.
• Crop Diversification: Encourage a shift from water-intensive crops to millets, pulses, and oilseeds, aligning crop choices with local climate and water availability.
• Input Pricing Reforms: Replace subsidies on electricity and water with direct income support (PM-KISAN). Incentivise water conservation through schemes like “Paani Bachao, Paise Kamao” in Punjab.
• Traditional Water Harvesting: Rejuvenate local water bodies, such as check dams, ponds, and tanks, through the MGNREGA. Promote watershed management and rainwater harvesting in rain-fed areas.
• Water Governance: Develop a National Water-Agriculture Policy to align water and farm planning. Use remote sensing, water audits, and real-time monitoring at the local level.
• Community Engagement: Empower farmers through water user associations and panchayat-led irrigation planning initiatives. Strengthen training via Krishi Vigyan Kendras (KVKs) and NGOs.

Way Forward

Sustainable irrigation is central to ensuring nutritional security, ecological resilience, and rural prosperity. In the words of PM Modi, “Per drop, more crop is not just a slogan—it is our commitment to future generations.” As water availability declines and climate variability intensifies, India must transform its irrigation challenge into an opportunity for inclusive and sustainable growth.

Reference: The Hindu

PMF IAS Pathfinder for Mains – Question 211

Q. With agriculture accounting for most of India’s freshwater use, examine the drivers of unsustainable irrigation and propose measures to ensure sustainable water use in agriculture. (150 Words) (10 Marks)

Approach

• Introduction: Write briefly about irrigation in India, but unsustainable irrigation is the cause of concern.
• Body: Examine the factors contributing to unsustainable irrigation and explore measures to ensure sustainable water use in agriculture.
• Conclusion: Emphasising a multi-pronged strategy that combines regulatory reforms, efficient technologies, and farmer awareness to safeguard water resources and food security.