OATS 



Since the percentage of hulls varies in different varieties 

 and in different seasons, the composition of different lots 

 of oats is naturally variable. A sample of oats with 

 slender or incompletely filled grains is inferior in composi- 

 tion and food value to a sample of plump oats. The hull 

 averages about .30 per cent of the total weight of the grain. 



8. Draft on soil fertility. — The following table ' shows 

 the amounts of nitrogen, phosphoric acid, and potash re- 

 moved from the soil in a crop of 40 bushels of oats and 

 the accompanying amount of straw: — 



Nitrogen 



Phosphoric 

 Acid 



Oat ^ains, with hulls, per cent . 



Oat straw, per cent 



Oat grain removes in a crop of 



40 bu. (1280 lb.), lb 



Oat straw (1.5001b.) removes, lb. 

 Total crop of 40 bu. and 1500 lb. 



of straw removes, lb 



1.76 

 0..56 



22.. 53 

 8.40 



30.93 



0.48 

 1.62 



6.14 

 24.30 



.30.44 



' Calculated from data in Hopkins' "Soil Fertility and Per- 

 manent Agriculture." 



