Overview
ISO 24120-3:2025 - Agricultural irrigation equipment - Guidelines on the implementation of pressurized irrigation systems - Part 3: Sprinkler irrigation provides practical, non-prescriptive guidance for planning, installing, operating and maintaining pressurized sprinkler, micro‑sprinkler and sprayer irrigation systems. Applicable to both small‑scale family farms and large‑scale commercial agriculture, it covers systems used in open fields and protected structures (greenhouses, net‑houses, tunnels). The standard explicitly excludes centre pivots, linear systems, travellers and side‑roll sprinkler systems.
Key technical topics and requirements
The document organizes requirements and guidance across system components and design stages, including:
- System application and component selection
- Micro‑sprinkler, sprayer and mister selection principles for different crops and climates
- Control head components: water meters, valves and monitoring points
- Pumps and power
- Pump types, selection criteria, capacity and performance curve considerations
- Guidance on power sources and pump constraints
- System design principles
- Water application rate and water distribution uniformity
- Head loss and system head pressure calculations (informative Annex A on head‑loss vs pressure)
- Maximum lateral lengths, pressure reduction in risers, and head loss in tubes and accessories
- Filtration system requirements and placement to protect emitters
- Installation, testing and commissioning
- Lateral and riser installation, connecting sprinklers/micro‑sprinklers to laterals
- Field checks: pressure verification, comparison of design vs as‑installed performance
- Operation, fertigation and chemigation
- Safe and effective implementation of fertigation and chemigation, dosing unit considerations and benefits
- Maintenance and troubleshooting
- Filtration cleaning, chemical treatment of emitters, and routine maintenance schedules
Practical applications and users
ISO 24120-3:2025 is intended for stakeholders involved in irrigation planning, delivery and regulation:
- Agriculture ministries and extension services drafting guidelines and subsidies
- Irrigation planners and agronomists designing systems for water‑efficient production
- Farm managers and contractors installing and operating sprinkler and micro‑sprinkler systems
- Equipment manufacturers and suppliers targeting compliant designs and documentation
Useful for projects focused on water‑use efficiency, precision irrigation, crop yield optimization and protected‑crop production where pressurized sprinkler systems are appropriate.
Related standards
- Part of the ISO 24120 series on agricultural pressurized irrigation systems. Consult other parts of ISO 24120 for complementary guidance across irrigation technologies and implementation topics.
Keywords: ISO 24120-3, sprinkler irrigation guidelines, micro‑sprinkler, pressurized irrigation systems, fertigation, chemigation, irrigation system design, water distribution uniformity, filtration, pumps and valves.