oo 



The Fertilizers Used. 

 The following prices are used, as representing approxi- 

 mately the average cash price in local markets during the. 

 last few years: 



Per Ton. 

 Acid phosphate (14 per cent, available) |14.00 



Cotton seed meal 22.00 



Kainit 15.00 



Prices naturally vary in ditferent localities. Any one can 

 substitute the cost of fertilizers in his locality for the price- 

 given above. 



In each experiment two plots were left unfertilized, these 

 being plots 3 and 8. The lollowing table shows what kinds, 

 and amounts of fertilizers were used on certain plots; the 

 number of pounds of nitrogen, phosphoric acid, and potash 

 supplied per acre by each fertilizer mixture; and the per- 

 centage composition and cost per con of each mixture, the 

 latter being given in order that these mixtures may be- 

 readih' coini^ared with various brands of prepared guanos :: 



