150 Soils of the Far TfW. 



should excessive irrigation be practiced. This soil is adapted to 

 any of the crops suitable to the climate. 



1-234 



Soil (4) 11 74 11 4 



Subsoil (2) 1 53 24 20 



Acres. 



Imperial, Cul 1 . 792 



Yuma, Ariz 9, 062 



Imperial sandy loam. — A fine-grained sq^ndy loam, 3 feet deep, 

 underlain by clay ur loam, formed by dejwsition of coarsest sedi- 

 ments carried by Colorado River. Surface irregular and covered 

 with dunes. Where free from excessive alkali the soil is adapted 

 to any crop suitable to southern arid regions. 



12 .3 4 



Soil (12) 30 50 16 



Subsoil (9) 24 43 28 



Acres. 



Imperial, Cal 126, 656 



Yuma, Ariz 12,806 



Imperial loam. — A fine-grained sticky loam, on an average 5 feet 

 deep, underlain by clay or clay loam. A very fertile soil, but fre- 

 quently contains an excess of alkali salts. Drainage of this soil is 

 costly and difficult on account of its close grain. When free from 

 alkali it is adapted to most of the crops suited to the climate, l)ut 

 as it is likely to pack, annual crops or cultivated crops will prove 

 most profitable. 



1 •-' 3 4 



Soil (7) . 13 52 32 



Subsoil (5) 7 51 38 



Acres. 



Imperial, Cal 341, 056 



Yuma, Ariz 20,800 



Imperial clay. — Soil is a heavy-clay loam or clay, having a depth 

 of 6 feet or more. Surface usually level, though in places small 

 dunes are seen. Derived from deposition of finest sediment of the 

 Colorado River. When dry and in its natural state it exists in 

 hard cakes and lumj)s. After irrigation the soil dries very hard 

 and cracks intersect the surface in all directions. Difficult to till. 

 Little under culti'^^ation. Sorghum and millet produce good crops. 



