TABLE 4 - ESTIMATE OF NEEDS FOR CONSERVATION TREATMENT ON EXPECTED IRRIGATED 



CROPLAND ACREAGE. MONTANA. 1975. 



' Adequately 1/ ' Needing 

 ' treated or • treatment 

 Total ' treatment ' & feasible 

 Acreage ' not feasible ' to treat 



Type of Problem 



o » • 



o • o 



Land with no problems that limit use • 



Land on which the dominant problem is 

 erosion by water or wind or both . , 

 No serious secondary problem 

 Secondary problem of excess water. 

 Secondary problems caused by 



unfavorable soil conditions . 

 Secondary problems caused by 

 adverse climatic conditions .... 



Land on which the dominant problem is 



excess water .... „ 



No serious secondary problems . , . 

 Secondary problems of erosion by 



water or wind , , . , , 



Secondary problems caused by 



unfavorable soil conditions .... 

 Secondary problems caused by 

 adverse climatic conditions .... 



Land on which the dominant problems are 

 caused by unfavorable soil conditions? 

 No serious secondary problem , . , . 

 Secondary problems of erosion by 



water or wind o 



Secondary problem of excess water. . 

 Secondary problems caused by 

 adverse climatic conditions , . , « 



Land on which the dominant problems are 

 caused by climatic conditions , „ . . 

 No serious secondary problem , , , . 

 Secondary problems of erosion by 



water or wind , . . , , 



Secondary problem of excess water, . 

 Secondary problems caused by 

 unfavorable soil conditions .... 



0.9 



83.1 

 



83.1 

 



0.2 

 25.9 

 25.9 



0.7 



57.2 

 



57.2 

 



Total acreage of irrigated cropland 1.936.5 867.2 1.069.3 



1/ Acreage has been adequately treated or is not feasible to treat under 

 current technology and economic conditions. 



17 



