276 FIELD CROPS FOR THE COTTON-BELT 



composition of different samples is very unimiform. The 

 average of American analyses is given by Hunt as follows: 



Table, 28. Average Composition of Different Parts op the 

 Oat Plant ' 



The oat kernel is richer in protein than that of any other 

 cereal. The straw contains a higher percentage of protein 

 and less crude fiber than wheat or rye straw. 



The draft on the important fertiUzing constituents made 

 by the oat crop is shown below: 



Table 29. Pounds of Nitrogen, Phosphoric Acid and Potash 

 Removed -from the Soil by a 40- Bushel Crop of Oats ^ 



Nitrogen 



Phosphoric 

 Acid 



Potash 



Oat grains, 40 bu. (1280 lbs.) 



Oat straw (1500 lbs.) 



Total crop 



22.53 



8.40 



30.93 



8.83 



4.20 



13.03 



6.14 

 24.^0 

 30.44 



1 Hunt, T. F., " Cereals in America," p. 284. 

 ^Duggar's "Southern Field Crops," p. 5, as calculated from data 

 in Hopkins' "Boil Fertility and Permanent Agriculture." 



