14 KLEMENTARY TREATISE ON STOCK FEEDS AND FEEDING 



Variation of Ash.— The content of ash in different feeds var- 

 ies a great deal as the following table shows: 



Straw Ash 



Per cent. 



Oat 5-1 



Rice 7-8 



Rye 3-2 



Wheat 4-2 



Forage Plants (hay) 



Alfalfa 7-4 



Crimson clover 8.6 



Orchard grass 6.o 



Timothy 4.4 



Different parts of the same plant vary in ash content. 



Ash 



Per cent. 

 Corn stover (whole plant 



except ears) 4.9 



Corn shucks 3.4. 



Corn cob 1.4 



Grains Ash 



Per cent. 



Corn 1.5 



Oats 3-0 



Rice 55 



Wheat 1.8 



Roots and Tubers (fresh) 



Beet (mangel) i.i 



Carrot i.o 



Irish potato i.o 



Sweet potato 1.0 



Corn grain 



Ash 

 Per cent 



••• 1.5 



Corn leaves 9.7 



Corn (whole plant) 4.3 



Corn germ 4.0 



Corn bran 1.3 



There is also a variation in the amounts of compounds in the 

 ash of different parts of the same plant. The percentages of the 

 compounds in this table are figured on 100 per cent, ash of sugar 



cane.- 



Potash 



Soda 



Lime 



Magnesia 



Iron oxide 



Alumina 



Silica 



Phosphoric acid 

 Sulphuric acid . 

 Carbonic acid . . 



Chlorine 



Carbon 



Ash 



1 Louisiana Experiment Station, Bui. 91. 



