248 ILLINOIS DAIRYMEN'S ASSOCIATION. 



desirable to feed on the farm the crops that are grown upon it, 

 and sell only live stock and dairy products, thus removing from 

 the farm the minimum amount of valuable fertilizer elements and 

 eventually returning to the land the major portion of the manure, 

 solid and liquid, if properly taken care of. 



The purchase of concentrated feeds, bran, linseed, cotton- 

 seed and gluten meals, brings onto the farm from $10.00 to $12.00 

 worth of these same valuable elements per ton of feed, about 

 three-fourths of which goes into the manure. 



An understanding of these facts suggests why dairying is 

 one of the surest and quickest means of building up and main- 

 taining the soils which have been depleted by continuous crop- 

 ping. 



To estimate the value of commercial fertilizers, the State 

 Chemist values nitrogen at 15c per pound, phosphoric acid 3J^c, 

 and potash 6c per pound. These prices with table III in " Feeds 

 and Feeding " as a basis for the fertilizer elements in the common 

 farm products show that $100 worth of the various farm products 



will contain nitrogen, phosphoric acid and potash worth as fol- 

 jQ^g . Value of fertilizing 



Material in $100. 



Product. Market Price, worth of pro- 



Roughness — ducts. 



Oat straw at $3.50 per ton $99.65 



Corn stover at 4.00 per ton 97.47 



Wheat straw at 3.00 per ton 82.29 



Timothy hay at 8.00 per ton 65.39 



Grains — 



Corn at 35 per bu. 64.30 



Oats at 20 per bu. 59.98 



"Wheat at 60 per bu. 41.16 



Barley at 40 per bu. 33.95 



Live Stock — 



Sheep at 3.00 per lOO lb. 11.44 



Cattle at 4.00 per 100 lb. 10.41 



Wool — unwashed at 20 per lb. 6.69 



Hogs at 4.50 per 100 lb. 6.59 



Dairy Products — 



Milk at 90 per 100 lb. 10.72 



Cheese at 10 per lb. 6.82 



Cream at 48 per gallon 1.05 



Butter at 20 per lb. .11 



