Design of trickle irrigation system for vegetables


Trickle irrigation system is a very efficient method of applying water and nutrients to crops. For many crops especially for vegetables, the conversion from sprinkler to drip irrigation can reduce water use by 50 until 70 percent.
These benefits are only possible when a trickle irrigation system is properly designed, managed, and maintained.When we compared to other methods, advantages of trickle irrigation system over other types include:

  • water conservation (uses 1/3 to 1/2 less water compared to other methods)
  • energy efficient
  • fewer weed problems since systems do not generally wet the entire ground surface
  • area between rows remains drier, facilitating spraying, harvesting, and other cultural operations
  • can be used for fertigation
  • reduced labor compared to some other methods
  • can be easily automated
Trickle irrigation system components

A drip irrigation system has six major components: 
  1. Delivery system
  •  Mainline distribution to field
  •  Sub-mainline (header line)
  •  Feeder tubes or connectors Drip lines
      2. Filters
  •  Sand
  •  Screen
  •  Disk
      3. Pressure regulators Fixed outlet
  •  Adjustable outlet
      4. Valves or gauges

      5. Chemical injectors 
  • Positive displacement injectors
  • Pressure differential injectors
  • Water-powered injectors
      6. Controllers
  • Manual
  • Computer 

How these components are put together for your application, and which options you choose, will depend on the size of the system, the water source, the crop, and the degree of automation you desire.