Drip Irrigation + Fertigation Setup Cost for a Polyhouse: The Real Numbers

It’s the one line item every farmer underestimates — and the one system your entire polyhouse investment actually depends on.

Ask most first-time polyhouse farmers what they’re budgeting for, and they’ll rattle off the structure cost, the poly film, maybe the labour. Drip irrigation and fertigation usually get mentioned almost as an afterthought — “oh, that’s included, right?” Sometimes it is, sometimes it’s a separate line your vendor conveniently forgets to highlight until the final bill. So let’s actually walk through what this system costs, piece by piece, the way we break it down for our own clients before they sign anything.

Why Polyhouse Drip Costs More Than Open-Field Drip

If you’ve priced drip irrigation for open-field crops before, don’t use that number as your reference. Polyhouse cultivation uses much tighter plant spacing and higher-density planting than open fields, which means more laterals, more emitters, and finer control — all of which push the cost up. Where an open-field drip setup for row crops might run ₹25,000–40,000 per acre, a polyhouse vegetable setup with proper fertigation typically lands in the ₹50,000–80,000 per acre range, sometimes higher for very high-density crops.

What You’re Actually Paying For

A full drip-and-fertigation setup isn’t one product — it’s a handful of components that need to work together. Here’s the breakdown of what makes up that per-acre figure:

Add it up and you’ll usually land somewhere around ₹50,000–80,000 per acre for a proper polyhouse-grade system using ISI-certified material. That range isn’t padding — it genuinely depends on emitter spacing, whether you go with a basic Venturi or a proper dosing pump, and how automated you want fertigation scheduling to be.

The Mistake That Costs Farmers the Most Later

Here’s something we tell every client, sometimes more than once: don’t buy non-ISI drip material to save money upfront. Cheaper, non-certified pipes and emitters typically last only 2–3 years and come with far higher maintenance headaches — clogging, uneven flow, leaks at joints. ISI-certified material costs more initially but easily runs 7–10 years with minimal fuss. On a per-year basis, the “budget” option almost always ends up more expensive once you factor in replacement and lost production during downtime.

Why Fertigation Alone Is Worth the Extra Spend

Fertigation — feeding your crop through the drip line instead of broadcasting fertiliser by hand — isn’t a luxury add-on for polyhouse farming, it’s close to non-negotiable. It cuts fertiliser waste substantially since nutrients go straight to the root zone instead of the surrounding soil, and it lets you adjust the feeding schedule precisely by crop growth stage instead of guessing. Over a season, most farmers see this pay for itself through reduced fertiliser bills alone, even before counting the yield and quality improvement from more consistent nutrition.

Subsidy Available on This, Too

Drip irrigation and fertigation infrastructure is separately eligible for support under the Pradhan Mantri Krishi Sinchayee Yojana (PMKSY), on top of whatever structure subsidy you’re claiming under MIDH/NHM. Small and marginal farmers can see subsidy support well above the general rate — check current slab rates with your District Horticulture Officer, as these vary by category and are revised periodically. Don’t assume your polyhouse structure subsidy automatically covers irrigation — in most cases, it’s a separate claim with its own paperwork.

Frequently Asked Questions

Costs mentioned in this article are indicative estimates for 2026 and will vary based on crop type, emitter density, water source, brand, and location. Please get a project-specific quotation before finalising your budget.