ing acre two with acre three the effect of the potash could 

 be learned. See table, page 12. 



The experimenters used the fertilizer at the rate of from 

 200 to 500 pounds per acre. The seasons at most points 

 were unfavorable, the drought during August not permitting 

 a continuous growth or the plant food to be used to the best 

 advantage. On this account the lighter applications of fer- 

 tilizer may have made a relatively better showing than the 

 heavier ones. 



The profits are calculated on the basis of $4.50 for 12 per 

 cent beets and 33 1/3 cents for each additional per cent of 

 sugar in the beet. 



The profits are certainly enough to justify the continued 

 use of fertilizers and the improvement in both yield and 

 sugar content due to the potash is very striking and shows 

 excellent profits. 



In the case of Mr. Hume's experiment a slight loss in 

 yield was more than compensated by the increase in sugar 

 on the plat with the potash fertilizer, while a loss of $2.79 

 on plat 3 fertilized only with nitrogen and phosphoric acid 

 was converted into a gain of $6.24 by adding the potash. 



Throughout all the experiments, the use of potash has the 

 effect of increasing the profits out of all proportion to its 

 cost, and the use of a fertilizer containing 10 per cent of 

 potash is fully justified. 



The Michigan Experiment Station has conducted many 

 systematic sugar beet experiments with fertilizers and barn 

 yard manure and sums up the results by a statement that no 

 single element or two element fertilizer is as profitable as a 



21 



