RELATION OF DAIRYING TO SOIL 177 



These averages are low and much less than can 

 ordinarily be raised per acre with intelligent 

 farming. But accepting these averages for our 

 forty-acre farm, we have the following: 



1,200 bushels of oats containing worth of soil fertility. . . 



560 bushels of wheat containing worth of soil fertility . . 



600 bushels of rye containing worth of soil fertility 



1,000 bushels of corn containing worth of soil fertility. . . 

 1,000 bushels of barley containing worth of soil fertility. 

 3,600 bushels of potatoes containing worth of soil fertility 



$150 

 145 

 130 

 165 

 153 

 75 



If tobacco is grown instead of these, with 1,000 

 pounds of this crop per acre, $300 worth of soil 

 fertility is sold, and with ten tons of sugar 

 beets per acre, a low estimate, $275 worth of 

 soil fertility is removed annually. 



Prices used in these calculations. These calcu- 

 lations are based on the average analysis of the 

 above products, average yield for the United 

 States, and the present price of commercial fer- 

 tilizers, viz., nitrogen, 19 cents per pound, phos- 

 phoric acid, 5 cents per pound, and potash, 

 5 cents per pound.* It requires only a careful 

 comparison of the above figures to convince the 

 thoughtful farmer of the great advantage of 

 dairy farming ' over other lines of agriculture. 

 If it is impossible for the farmer to go into dairy 

 farming exclusively, he can do the next best 



*At the time that this goes to press the price of potash 

 has become almost prohibitive on account of the war in 

 Europe. 



