AGRICULTURAL EXPERIMENT STATION. 



27 



THE COMPARATIVE RESULTS WITH COMMERCIAL FERTILIZERS AND 

 WITH STABLE MANURE. 



The figures contained in the succeeding table should be sugges- 

 tive to two classes of farmers : (1) Those who are skeptical about 

 the real value of commercial manures for feeding plants, and (2) 

 those who carelessly allow a waste of plant food from the stable 

 which is no less valuable than that which is purchased. 



TABLE VIII. 





Yield per acre of air-dry 

 fodder. 





B 3 



EH CO 



^ Or-; 



!?■- 



O -f^ 

 po 



Annual excess 

 of yield over 

 lilots not 

 fertilized. 





14,0.50 

 17,738 

 19,957 

 21,381 

 •23,-243 

 26,751 



3,688 

 5,907 

 7,331 

 9,193 

 12,701 





Plots receiving 360 lbs. fertilizer per acre 



Plots receiving 595 lbs. fertilizer per acre 



461 

 73S 

 916 



Plots receiving 830 lbs. fertilizer per acre 



Plots receiving 40,000 lbs. stable manure per acre 



1,149 

 1,588 



The fact of greater production from the stable manure than from 

 the commercial fertilizers is what would reasonably be expected 

 when we consider the larger amount of plant food contained in the 

 former. If the stable manure was of average composition, and it 

 was at least as rich as that, the quantities of plant food supplied 

 would not be far from the following : 



TABLE IX. 





Applied per acre. 





5 



SX) 









liK5 



128 

 73 



176 





30 to 40 









