142 



HATCH EXPERIMENT STATION 



[Jan. 



Nitrogen, 

 Phosphoric acid, 

 Potash, . 



Per Cent. 



1.5- 3.7 

 9.0-13.0 

 1.5- 9.5 



The other two plots (2 and 4) have annually received an 

 ap})lication of materials substantially the same in kind and 

 quantity as those recommended in Bulletin No. 58 for corn 

 on soils poor in organic matter. The essential difterence 

 between the applications on the two pairs of plots is that 2 

 and 4 receive materials furnishing a much larger (|uantity 

 of potash and nmcli less })hosphoric acid than the other pair 

 of plots. The fertilizers applied to the several plots are 

 shown below : — 



Fektilizeks used. 



Plots 2 and 4 

 (Pounds Each). 



Nitrate of soda, . 

 Dried blood, 

 Dry ground flsli. 

 Acid phoepliate, . 

 Sulfate of potash, 



50.0 

 50.0 

 62.5 



The present is the second season that this field has now 

 been in grass. The past season has been favorable to the 

 hay crop, the field was cut twice, and the hay was weighed 

 and housed in excellent condition. The tables show the 

 yields : — 



Yields of Hay and lioiven, 1002 (Pounds). 



Plots. 



Hay. 



Rowen. 



Total. 



Plot 1 (lesser potash), . 

 Plot 2 (richer in potash). 

 Plot 3 (lesser potash), . 

 Plot 4 (richer in potash). 



3,713 

 5,072 

 3,992 

 5,012 



1,540 

 1,900 

 1,260 

 1,560 



5,252 

 6,972 

 6,252 

 6,572 



Averaging the two pairs of plots, we have the rates of 

 yield per acre for hay, rowen and total shown below :< — 



