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RESOURCES OF TENNESSEE. 



According to the results of numerous field experiments, the adding of 

 neither potash nor phosphate is apt to be profitable on the typical brown 

 loam, so far as general farm crops are concerned. Chemical analyses show 

 this type of soil to be especially well supplied with phosphate. Instances 

 have been found, however, where acid phosphate has proved profitable, 

 especially for some quick growing crop like Irish potatoes or alfalfa. 



Red-colored loam. In the vicinity of Murfreesboro are red-colored 

 soils which differ somewhat from the typical brown loams of the Central 

 Basin. In particular they are not so well supplied with phosphate, so that 

 they respond readily to applications of acid phosphate. This type of soil 



FIG. 3. Typical scene in the bluegrass section of Middle Tennessee. 



has been planted extensively in cotton, as well as in corn and wheat, until 

 its productiveness has been greatly reduced. Here again, greatly increased 

 attention should be given to the growing of clover, alfalfa and grass, 

 which can be materially assisted by liming and phosphating. 



Phosphatic soils. Phosphate rock is found at different points in the 

 basin and has given rise to some very rich, brown-colored, loamy soils 

 which have an extra high content of phosphoric acid. 



Under the usual system of cropping, these soils are apt to become poor 

 in nitrogen and in some instances are greatly impoverished. For such a 

 condition phosphate fertilizers are not only inefficient but are entirely un- 



