256 



IRRIGATION PRACTICE 



as its behavior under irrigation becomes better under- 

 stood, and as dairying and other forms of animal hus- 

 bandry develop on irrigated lands. 



Corn differs from the small grains in its longer growing, 

 hence longer irrigating, period. The details of prepar- 

 ing the land, seeding and general cultural practices are 



Wheat- 



s 



in i 





GO 



FIG. 63. Yield vs. water (wheat). 



those followed in humid districts. Drill or row culture is 

 the only allowable method of sowing corn under irrigated 

 conditions. 



Cultivation is as essential in corn-growing under 

 irrigation as under humid conditions. The soil should be 

 cultivated immediately after each irrigation, as soon as 

 the soil is dry enough to permit the hoe to be safely 

 used. Moreover, it is well to cultivate the corn at least 



