Irrigation Water Conveyance and Application Methods
Subtopic: Surface, sprinkler and micro irrigation methods
Question Statement:
Which of the following components are essential parts of a micro-irrigation (drip) control head unit?
Options:
(A) Screen or disc filter and hydrocyclone (sand separator)
(B) Fertilizer injector (Venturi injector or fertilizer tank)
(C) Pressure regulator and air release/vacuum relief valve
(D) Parshall flume with stilling well
Answer Key:
A, B, C
Step-by-Step Solution & Explanation
The control head (headwork) of a drip irrigation system includes:
• Media/sand separator/screen/disc filters to prevent emitter clogging (A).
• Fertigation unit such as Venturi injector or dosing pump (B).
• Pressure relief, pressure regulating valves, and air release valves (C).
Parshall flumes are open channel measuring devices and are not part of pressurized micro-irrigation control heads.