No. 6. 



DEPARTMENT OF AGRICULTURE. 



853 



TABLE 10. 

 Average Yield Per Acre of Wheat of Plots. 



o 



Form in Which it Was 

 Applied. 



Source of Supply. 





o 



Soluble phosphoric acid, ., 

 Reverted phosphoric acid, 

 Insoluble phcisphorlc acid. 

 Insoluble phosphoric add. 



No phosphoric acid 



Nothing , 



Dissolved bone black, . 

 Dissolved bone black,* 



Ground bone. 



South Carolina rock, ... 



200 

 200 

 150 

 150 



1,694 

 1,794 

 1.S9.". 

 1.S94 

 l,S-:4 

 1.351 



2S.23 



29.90 

 31.. 58 

 31. .56 

 30.57 

 22.52 



3,014 

 3 2 8 

 3.3.39 

 3.338 

 2,798 



i.gee 



4,708 

 5,C02 

 5.231 

 0.232 

 4,632 

 3,317 



•Treated with an equal weight of quick lime twelve hours before application. 



Assuming the yield of tlie plots receiving no fertilizer to be 100, the 

 average yield of the different plots is as follows: 



^ & G \ Soluble ph'sphnrtc acid, . 

 B & H 1 Reverted phosphoric acid. 



:; & I 

 o& J 

 & K 

 &L 



Insoluble phosphoric acid, 

 Insolublp phopphnrlc acid. 



No phosphoric ac:d, 



Nothing 



nissolved bone black 



Pissolved bone black 

 Dissolved bone black and lime. 



Ground bone 



South Carolina rock 



200 

 20O 



inn 

 i.-.o 



125 



133 

 140 

 140 

 136 

 100 



130 



