Irrigation—Principles & Practices
Part 1 – 218 | Unit 1.5
- Demonstrate and explain how to determine optimum operating pressure
- Students are given the opportunity to unhook, move, and hook up a sprinkler set.
The sprinkler set is then turned on and adjusted.
D. Drip Irrigation Systems
- Demonstrate and explain several examples of drip irrigation header set-ups
- Demonstrate and explain how to turn on a drip system and set pressure and check for
leaks - Demonstrate the following:
a) How a gate-valve and ball-valve work
b) How to set up a drip irrigation header
i. How to properly punch holes in the 2” oval tube
ii. How to install the barbed connectors into the oval tube
iii. How to connect the T-tape to the various types of connectors
iv. How to splice T-tape for repairs
v. How to cap ends of T-tape
vi. How to determine proper system pressure
vii. How to properly roll out and roll up T-tape for placement and storage
- Have students cut and splice T-tape
E. Review and Discuss Irrigation Scheduling
- Review the calculations in Hands-on Exercises 1–3 to determine the volume of water
and the frequency of irrigation necessary to replace the water lost through regional
evapotranspiration - Assign Exercise 4: Calculating irrigation requirements using regional
evapotranspiration data - Describe and demonstrate the use of an irrigation schedule for tracking and planning
irrigation (see Appendix 10)
F. Review and Discuss Exercises 5 and 6
- Exercise 5: How much water is needed to irrigate a given area of land?
- Exercise 6: How much area can one irrigate with a given flow rate?
G. Discuss water delivery systems needed to deliver the volumes of water given in
Exercises 5 and 6
Instructor’s Demonstration 1 Outline