Drip vs flood irrigation: cost, ROI, and when each one wins
Per-acre numbers, water savings, electricity load, and the PMKSY subsidy in 2026 — explained without the jargon.
Drip is not always the answer. Flood is not always wasteful. The right call depends on your crop, your water source, your power supply, and your patience.
The real cost per acre
A standard drip set for cotton or vegetables runs ₹35,000-55,000 per acre installed in 2026. PMKSY subsidy covers 55-75% for small and marginal farmers (state-dependent). Out-of-pocket: roughly ₹10,000-25,000 per acre.
Flood costs ~₹2,000-4,000 per acre per season in pumping and labour. The catch — your water bill keeps coming every season. Drip pays back in 2-3 seasons on cash crops, slower on cereals.
When drip clearly wins
Cotton, vegetables, banana, sugarcane, fruit orchards, and any crop where you fertigate — drip nearly always pays back. You save 30-50% water and 25-40% fertilizer. Yields go up 15-30% with disciplined scheduling.
If your bore-well discharge is low, drip is the only way to cover the same acreage. If you're on shared canal water with a fixed turn, drip lets you stretch one turn over more land.
When flood is still right
Paddy, especially transplanted paddy in heavy clay, doesn't take well to micro-irrigation. Wheat with abundant tube-well water and cheap power — flood is fine. Saline soils sometimes need flooding to leach salts down.
If you can't commit to weekly drip maintenance — clogged emitters, replaced filters, leak checks — flood is more forgiving.
