22 



HATCH EXPERIMENT STATION. 



[Jan. 



Yield per Plot. 



Average Yield per Acre. 



It will be noticed that the crops are of practically equal 

 value, — a little more grain on the manure and potash and 

 a little more stover on the larger quantity of manure alone. 

 The manure and potash used cost per acre nearly $7 less than 

 the larger amount of manure used alone. 



We have now grown seven corn crops on this field, and 

 the average yields are at the rate per acre for the two 

 manurings : — 



Average of Seven Crojjs. 



At prices which have prevailed during the period covered 

 by this experiment the total manurial application where the 

 manure and potash have been used has cost at the rate of 

 $75 per acre less than on the other plots. The manure 

 alone, however, has produced yields excelling the lesser 

 manure and potash for the entire period at rates per acre 

 amounting to: shelled corn, 33.6 bushels; corn stover, 



