Q. How and to what extent would micro-irrigation help in solving India’s water crisis ?

Model Answer: 

Agriculture consumes ~80% of India’s freshwater. Amid NITI Aayog’s warnings of acute water stress, micro-irrigation (MI) is critical for agricultural sustainability.

How Micro-Irrigation Mitigates the Water Crisis

• Enhanced Water Use Efficiency: Drip/sprinkler systems raise efficiency to 80-95%, replacing wasteful flood irrigation (PMKSY: Per Drop More Crop).
• Groundwater Conservation: Minimizes deep percolation and checks over-extraction in critical, over-exploited blocks (Punjab, Haryana).
• Zero Evaporation Loss: Delivers water directly to plant root zones, preventing surface runoff and evaporation.
• Arid Area Cultivation: Facilitates farming in semi-arid regions, actively aiding crop diversification (Israel’s desert agriculture model).

Extent and Limitations (Constraints to Resolution)

• Capital & Maintenance Costs: High initial setup expenses and frequent emitter clogging deter smallholder adoption.
• The Rebound Effect (Jevons Paradox): Water saved is often used to expand cultivation of water-intensive crops instead of being conserved.
• Energy Dependency: Requires continuous electricity/solar power for pressurization, unlike gravity-fed canal systems.
• Low Penetration: Currently covers only ~15% of India’s potential area due to fragmented landholdings and low awareness.

While micro-irrigation is foundational, permanently solving the water crisis requires complementing it with crop realignment, rainwater harvesting, and participatory aquifer management.