FARMING UNDER IRRIGATION 71 



to source of water supply, and laws creating and govern- 

 ing them? What restrictions and limitations are placed 

 on land ownership on the government projects? 



5. Name and explain the distinctive irrigation tools 

 and machinery in use not common to the other types of 

 farming. Bring pictures of different kinds not commonly 

 known in your section. Explain how they are used and 

 whether they are practical for your locality. 



6. Name and explain the different kinds of gates, locks 

 and dams used in irrigation work. What kind of power 

 have you seen in use for irrigation purposes? What im- 

 portant part does gravity take in all irrigation plans? 



7. Where in your community can other irrigation proj- 

 ects be profitably located? Show source of water supply, 

 and recommend the method of irrigation most economical 

 and efficient. 



8. What new legislation by both state and nation would 

 you recommend for the increased efficiency of present proj- 

 ects and for the reclamation of other tillable lands in the 

 county and state ? 



6. Irrigation Demonstrations 



1. Demonstrate how to make a surface corrugation to 

 be used in irrigating small grains, forage crops or alfalfa. 



2. Show three methods of furrowing an orchard. 

 Demonstrate by drawing how to make a furrow irrigation 

 system showing the location of water reservoir, main ditch, 

 laterals and furrows. 



3. Demonstrate with drawing how to make a "ridger," 

 a "leveler" and a "dammer." 



4. Demonstrate by use of soil and water on ground 

 out-of-doors or on a table an irrigation system for a 40-acre 

 farm, which is to be used for trucking, fruit and forage 

 crops. Show, if possible, the effect upon plants by giv- 

 ing them too little, too much, or just enough water. 



5. Show how to lay out fields for a 40-acre farm on 

 a 4-year system of crop rotation, including location of dif- 



