utilization of the Sweet Potato 



27 



Table VIII. — Showing Analysis of Various Feeding 

 Stuffs.'^ 



Crop 



9 



Irish potato . . , 

 Beets, common 

 Beets, mangels 

 Beets, sugar . . . 



Turnips 



Rutabagas ... 



Carrots 



Parsnips 



Artichoke . . . . 

 Sweet potato. . 

 Corn 



Per 



cent. 



Ether 



Extract 



0.1 

 0.1 

 0.2 

 0.1 

 0.2 

 0.2 

 0.4 

 0.2 

 0.2 

 0.5 

 5.0 



Keitt says concerning the analysis of the above crops : 

 " On land in this State (meaning South Carolina) 

 which under the ordinary system of cropping, yield 20 

 bushels of corn, we should be able to produce about 200 

 bushels of sweet potatoes. The potatoes would furnish 

 more than three times as much nitrogen free extract 

 and as much or more of each of the other proximate 

 constituents contained in the corn. From the preced- 

 ing table, we will note that the Irish potato contains 

 2.1 per cent, of protein, which is more than the amount 

 contained in the sweet potato ; but about one-half of the 

 calculated protein of the Irish potato is really nitrogen 

 present in the form of amides, which do not have the 

 feeding value that the albuminoids have. In order to 

 determine whether or not any of the nitrogen present 

 in the sweet potato was present in the form of amides, 



1 All of the analyses were taken from Henry's " Feeds and Feed- 

 ing" except that of the sweet potatoes, which represent the aver- 

 age analysis of fourteen varieties by T. E. Keitt, chemist of the 

 S. C. Exp. Sta. 



