B2 POT A SP? PAYS 



Materials supplying nitrogen should be selected accord- 

 ing to their relative availability, so that the plant may have 

 a full supply during the growing season. Nitrate of soda 

 probably furnishes nitrogen in the most available form. 

 Sulfate of ammonia is more slowly available but much 

 more readily ayailable than dried blood, tankage or bi- 

 products of the slaughter house. 



The interests of the farmer are best conserved by an 

 intelligent interest on his part, in the composition of the 

 fertilizers which he uses. Valuable suggestions have been 

 given about good general purpose formulas and how to 

 make them. It is possible however, with a better knowl- 

 edge of the composition of the materials furnishing the 

 elements, nitrogen phosphoric acid and potash, to com- 

 pound fertilizers according to any desired formula. Since 

 "experience is the best teacher, ' ' the farmer who will follow 

 our suggestions pertaining to plot experiments will have an 

 advantage over his neighbor who has not made practical 

 tests with the plant food elements. 



As a result of our own experience we are confident 

 that if these experiments are carefully conducted, even 

 though it may be shown that on some soils and for some 

 crops one element may be more important than another, 

 the need of an available supply of potash will be demon- 

 strated, and when put to the test of profit in dollars and 

 cents, the conclusion will be that " Potash Pays." 



