IRRIGATION 117 



Crop Rotations on Irrigable Lands. The 

 crop rotation which can be practiced on any 

 given area will depend upon latitude and cli- 

 mate of the area, and the size and accessibility 

 of markets. 



Latitude and Climate. The latitude and 

 climate of a region determines to a greater or 

 less degree the crop possibilities of that region. 

 A northern latitude and a high altitude mean 

 short seasons and a limited crop list. 



Southern latitudes and sea level mean, as a 

 rule, long seasons and correspondingly long 

 and valuable lists of products. 



To illustrate, take the possible crop list of 

 irrigated areas between 100 and no meridians 

 and north of the 38 parallel. The crop list 

 is confined to wheat, oats, barley, corn (in 

 part) , alfalfa, millet, sorghum, potatoes, sugar 

 beets, cabbage, peas, turnips, beans. Among 

 fruits, apples in certain portions, strawberries 

 and small fruit. 



Take a farm where grain farming only can 

 be followed. 



40 acres, one acre for house lot 



9 acres in sugar beets, 15 tons at $5.00 $ 675.00 



10 ;< potatoes, 150 bu. at .35 525.00 



10 " oats, 70 bu. at .30 210.00 



10 " " alfalfa, 30 tons at 5.00 150.00 



Total gross income $1,560.00 



" per acre 39.00 



As has been noted, the fixed charges against 



