Core System Components & Filtration Setup
A robust drip irrigation installation comprises a control head unit, distribution network, and emission devices. The filtration station is the most critical element for preventing emitter clogging from physical, chemical, or biological contaminants.
Selecting the right combination of hydrocyclone sand separators, media gravel filters, screen filters, or disc filters depends directly on whether the irrigation source is an open farm pond, canal, or deep tubewell.
- Control Head: Water pump, check valve, pressure relief valve, and automated or manual gate valves
- Filtration Unit: Media filters for organic algae in pond water, screen/disc filters (120 mesh / 130 micron) for silt
- Fertigation Station: Venturi injector, fertigation tank, or automated dosing pumps for precision nutrient feeding
- Distribution Piping: PVC/HDPE mainlines, sub-main manifolds, and UV-stabilized 12mm or 16mm LLDPE lateral lines
Emitter Selection & Spacing by Crop Type
Emitting devices are categorized as online drippers (button drippers punched externally into laterals) or inline drip tubing (cylindrical or flat drippers integrated inside laterals during factory extrusion).
Close-spaced field crops such as sugarcane, cotton, vegetables, and bananas utilize inline laterals with 30 cm to 50 cm dripper spacing, whereas widely spaced fruit orchards (mango, pomegranate, citrus) utilize online pressure-compensating (PC) drippers.
- Inline Laterals: 16mm tubes with 1.2 to 2.4 LPH flow rates spaced at 30, 40, or 50 cm for row crops
- Online PC Drippers: 4 to 8 LPH pressure-compensating emitters providing uniform delivery across undulating terrain
- Operating Pressure: System designed to maintain 1.0 to 2.0 kg/cm² pressure across all lateral ends
- Flushing Valves: Install sub-main and lateral flush valves at terminal points to purge accumulated sediments
PMKSY Per Drop More Crop Subsidy Framework
The Government of India provides capital subsidies under the Pradhan Mantri Krishi Sinchayee Yojana (PMKSY) Per Drop More Crop (PDMC) scheme. Financial assistance covers up to 55% of the indicative system cost for small/marginal farmers and up to 45% for other farmers.
Applications are submitted online via state micro-irrigation portals (such as MahaDBT in Maharashtra, e-Mandi portals, or state horticulture departments), requiring land title documents, bank passbook, and electricity connection details.
- Subsidy Range: 45% to 55% based on landholding category per central PMKSY operational guidelines
- BIS Certification: Only BIS-certified systems supplied by empanelled manufacturers qualify for subsidy release
- Direct Benefit Transfer: Subsidy amount is credited via DBT to verified beneficiary accounts post field verification
Official source
Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.
Pradhan Mantri Krishi Sinchayee Yojana (PMKSY) ↗Related on KisanPe
Common questions
What is the primary advantage of drip irrigation over flood irrigation?
Drip irrigation saves 40% to 60% of irrigation water, reduces weed growth between crop rows, minimizes fungal leaf diseases, and allows precise fertigation directly to root zones.
How often should drip filters and laterals be flushed?
Screen and disc filters should be backwashed weekly; lateral end caps should be opened and flushed bi-weekly to prevent sediment and bacterial slime buildup.
What is the difference between inline and online drip systems?
Inline systems have drippers built inside the lateral pipe at fixed intervals during manufacture, while online systems allow farmers to punch external drippers wherever required.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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