<s 



GEOGRAPHICAL DISTRIBUTION 



The composition of an alkali soil in Alberta as determined 

 by Shutt (16) is given in the following table. 



Table I. Soluble Salts in Alkali Soil of Alberta, Canada 



(Per Cent) 



United States. In sixteen or seventeen of the western 

 states of the Union, alkali is found to be one of the chief 

 agricultural problems. The problem is much more acute 

 in some regions than others. The San Joaquin, Sacra- 

 mento, and Imperial Valleys of California; the Great 

 Basin, comprising a large part of Utah and Nevada; 

 the Colorado River drainage basin, comprising parts of 

 Wyoming, Utah, Colorado, Arizona, and California; 

 the Rio Grande River drainage area, including parts of 

 New Mexico and Texas; parts of the Columbia River 

 drainage basin ; and rather extensive sections in the Great 

 Plains east of the Rocky Mountains include the most 

 important parts of the United States affected with alkali. 

 In practically all the western states certain areas affected 

 by alkali have been described in publications of the state 



