The following data shows the distribution of cropland by land capa- 

 bility class and the dominant problem associated with cropland use. 



Acreage of Cropland by Land Class 



Class I 



Class II 



Class III 



Class IV 



Class V 



Class VI 



Class VII 

 Total 



897. Dry Cropland 







2,489,795 



8,356,989 



1,458,477 



15,871 



995,051 



24,826 



13,341,009 



The subclass letters of e, w, s 

 problem in each of the land capabilit 

 of severity increases with each class 

 affecting cropland use. 



117. Irrigated 

 207,872 

 590,947 

 380,022 

 308,161 

 1,478 

 159,286 







1,647,766 



and c relate to 

 y Classes II thr 

 Class I land 



Kind of Problem 

 e - erosion 

 w - wetness 

 s - soil 

 c - climate 

 Total 



Dry Cropland 



7,819,465 



325,763 



661,448 



4.534.333 



13,341,009 



Irr. Cropland 

 570,993 

 288,347 

 310,734 

 269.820 

 1,439,894 



Total 



207,872 



3,080,742 



8,737,011 



1,766,638 



17,349 



1,154,337 



24.826 



14,988,775 



the dominant kind of 

 ough VII. The degree 

 has no limitation 



Total 



8,390,458 

 614,110 

 972,182 



4.804.153 

 14,780,903 



(e) Soil erosion is the dominant problem on 57 percent of the cropland. 

 About 40 percent of the irrigated cropland and 59 percent of the dry crop- 

 land either have erosion problems or erosion is likely to occur under 

 existing uses unless the land is properly protected. Sloping lands and 

 sandy soils or granular clay soils have the greatest potential for soil 

 loss under cropland use. 



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15 



