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CONTENTS Introduction 4 5 6 Aim of this document Safety instructions Use of symbols in this document Drip irrigation system overview 7 An overview of the drip irrigation system components, their functions and properties: Structure of a drip irrigation system; Water source; Pumps & pumping stations; Filtration; Main, sub-main, distribution pipes and fittings; Water meters and pressure gauges; Valves; Dosing unit; Dripperlines (laterals); Connectors; End of dripperlines; Sensors; Controller; Accessories and add-ons; Agro-machinery. Drip irrigation management and operation 47 Guidelines and useful tips for the proper management and operation of a drip irrigation system: Irrigation; Nutrigation™; Nutrigation™ via a drip irrigation system; Chemigation; Dripperline insertion or laying. Drip irrigation system maintenance 65 Guidelines and useful tips for the proper maintenance of a drip irrigation system: Maintenance timetable; System flushing; Preparation and use of a hydraulic conditions checklist; Chemical injection for system maintenance; Water analysis; Sampling drippers; Rodent control; Root intrusion prevention in subsurface drip irrigation (SDI) systems; Contamination from external particles in SDI; Periods of system inactivity. Water / soil / plant relationship 83 Vital information considering the soil condition, the water characteristics and the needs of the crop, and guidelines for the planning and management of a drip irrigation system: Soil; Water budgeting; Tensiometers Appendices Appendix 1: Unit conversion tables Appendix 2: Further reading 94 95 DRIP IRRIGATION HANDBOOK 3