DAIRYING 263 



ing operation. Consequently, the full crop-producing 

 power is maintained and an increase of $18 in plant 

 food is added to the soil. If twenty cows are kept 

 on this land, the crop-producing power of the soil will be 

 improved to the extent of $3,000. Therefore, the farm 

 daily grows in value : it adds quite a little to the capital 

 invested in the plant. 



And in this connection a word about the saving of this 

 dairy-made manure is not out of place. For our illustra- 

 tion means that every form of manure produced on the 



WHEAT 



CORN 



TIMOTHY 



COTTON 



MILK 



BUTTER 



RELATIVE AMOUNTS OF PLANT FOOD REMOVF.D WHEN A TON OF EACH 

 PRODUCT IS SOLD FROM THE FARM 



farm must be well preserved, if the fertility of wheat 

 lands or of any kind, for that matter is to be main- 

 tained. 



Waste in the wash of manure. At the Ohio Experi- 

 ment Station this test was made and reported by Director 

 Thome: manure was taken directly from the stable in 

 April and applied to land about to be plowed for corn, the 

 corn being followed by wheat and clover in rotation with- 

 out further manuring or fcrtili/ing, and compared with 

 manure produced by the same animals and applied in the* 

 same quantity and manner and at the same time, but 

 which had lain in an open barnyard through the winter. 



