142 



liATCH EXPERIMENT STATION. 



[Jan. 



Nitrogen, 

 Pho.si:)horic acid, 

 Potasli, . 



Per Cent. 



1.6- 3.7 

 9.0-13.0 

 1.6- 9.6 



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

 application 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 difference 

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

 and 4 receive materials furnishing a much larger quantity 

 of potash and much less phosphoric acid than the other i)air 

 of i)lots. The fertilizers appHed to the several })lots are 

 shown below : — 



Fertilizers used. 



Plots 2 and 4 

 (Pounds Each). 



Nitrate of soda, . 

 Dried blood, 

 Dry ground fish, 

 Acid phosphate, . 

 Sulfate of potash. 



50.0 

 50.0 

 62.5 



The present is the second season that this field has now 

 been in grass. Th<3 past season has been favorable to the 

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

 and housed in excellent condition. The tables show the 

 yields : — 



Yields of Hay and Roiven, 1902 (^Pounds). 



Plots. 



nay. 



Kowen. 



Total. 



Plot 1 (lesser potash), . 

 Plot 2 (richer in potash). 

 Plot 3 (lesser potash), . 

 Plot 4 (richer iu potash), 



3,712 

 5,072 

 3,992 

 5,012 



1,540 

 1,900 

 1,260 

 1,560 



5,252 

 6,972 

 5,252 

 6,572 



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

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



