52 



FORAGE PLANTS AND THEIR CULTURE 



41. Yields under irrigation. Under irrigation in the 

 Western States no other hay plant will produce such 

 high yields as alfalfa. The most extensive investigations 

 comparing different hay crops under irrigation have been 

 conducted at the Utah Experiment Station. Up to a 

 certain maximum, the yields tend to increase with the 

 amount of water applied, but the highest return per inch 

 of water is secured with the smallest applications. See 

 table, p. 51. 



42. Cost of seeding. The cost of seeding per acre 

 is in some cases a reason for preference where choice is 

 possible, as is shown in the following table. The prices 

 given are New York wholesale prices in January, 1914 : 



COST OF SEED PER ACRE, USING AVERAGE AMOUNT 



The cost of some of these seeds would be much reduced 

 if the demand for them were greater. 



