Core definition and agricultural objectives
Irrigation is an essential agronomic intervention that stabilizes crop production against drought.
- Primary Definition: The artificial supply of water to agricultural soils to maintain optimal root zone moisture for crop growth.
- Seed Germination: Provides essential moisture required for seed imbibition, germination, and early seedling emergence.
- Nutrient Dissolution: Dissolves soil minerals and fertilizers, allowing plant root hairs to absorb nutrients through transpiration flow.
- Temperature Moderation: Moderates soil and canopy microclimate, reducing thermal stress during hot summers and frost injury in winter.
- Enables Multi-Cropping: Allows farmers to cultivate 2 to 3 crops annually on the same parcel of land instead of depending solely on monsoons.
Major methods of irrigation practiced in India
Farmers choose irrigation techniques based on topography, water availability, soil texture, and crop type.
- Surface Irrigation: Traditional flood, furrow, and basin irrigation; water flows by gravity over the land surface; low equipment cost but higher water loss.
- Drip Irrigation: Delivers water drop-by-drop directly into the root zone via emitters; achieves 85% to 95% water application efficiency.
- Sprinkler Irrigation: Sprays pressurized water into the air to mimic rainfall; suitable for undulating terrain and crops like wheat, pulses, and oilseeds.
- Sub-Surface Irrigation: Buried drip tubes or underground pipes that supply water directly below the soil surface, eliminating evaporation.
- Lift and Well Irrigation: Pumping groundwater from open dug wells, borewells, and rivers using electric, diesel, or solar pumps.
Water use efficiency and government initiatives
Sustainable water management is supported through national conservation schemes.
- Pradhan Mantri Krishi Sinchayee Yojana (PMKSY): National flagship program promoting Per Drop More Crop through micro-irrigation subsidies.
- Water Use Efficiency: Drip and sprinkler systems save up to 40% to 60% of water while increasing crop yields by 20% to 30%.
- PM-KUSUM Scheme: Promotes solar-powered irrigation pumps, reducing dependence on diesel fuel and unstable grid electricity.
- Farmers can apply for micro-irrigation subsidies through their state horticulture or agriculture department portals.
Official source
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Pradhan Mantri Krishi Sinchayee Yojana (PMKSY) ↗Related on KisanPe
Common questions
What is the simple definition of irrigation?
Irrigation is the artificial application of water to soil or crops to assist in plant growth when natural rainfall is insufficient.
Which method of irrigation saves the most water in India?
Drip micro-irrigation saves the most water, achieving 85% to 95% water efficiency by delivering water directly to plant root zones.
What is the difference between rainfed and irrigated agriculture?
Rainfed farming depends entirely on seasonal rainfall, whereas irrigated farming uses canals, wells, or drip systems to supply water artificially as needed.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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