THE MIAMI SERIES OF SOILS. 59 



The Miami silt loam and clay loam are closely associated in geo- 

 graphic distribution, and are quite similar in their present crop uses. 

 Owing partly to the climate both types are used chiefly for corn 

 growing, with hay and oats occupying large acreages. Winter wheat 

 is extensively grown upon both soils, giving moderate yields. The 

 corn acreage is increasing while that in wheat is decreasing on both 

 soil types. In general, the fattening of cattle and the raising of 

 hogs constitute the chief forms of animal industry on both types, 

 although the dairy industry is well developed in the more northern 

 regions of their occurrence. Special crops, with the exception of 

 tobacco and tomatoes, are not extensively grown. 



The principal types of the series rank high as general farming 

 soils, giving yields of the staple crops which equal or exceed the 

 average of the States where they are most extensively developed. 

 It is generally true that the heavier members of the series are much 

 improved by tile underdrainage, while all of the types require the 

 addition of organic matter in the surface soils either by the use of 

 stable manure or the plowing under of green manure. It has been 

 found that while the subsoils of the different types are generally 

 calcareous, the application of lime to" the surface soils is beneficial 

 in conjunction with the growing of clover and other leguminous 

 crops. 



Practically all the available areas of the principal types have 

 been cleared and are utilized for agricultural purposes, only the 

 rougher land remaining in woodlots or in permanent pastures. 

 While crop yields are, in general, satisfactory, it has been found that 

 careful attention to crop rotation, the incorporation of organic ma- 

 nures, the use of commercial fertilizers with the small grain crops, 

 liming, and tile underdrainage on the heavier types aid in increas- 

 ing crop yields. 



ADDITIONAL COPIES 



OF THIS PUBLICATION MAY BE PROCURED FROM 



THE SUPERINTENDENT OF DOCUMENTS 



GOVERNMENT PRINTING OFFICE 



WASHINGTON, D. C. 



AT 



]£ CENTS PER COPY 



