METHODS OF APPLYING MANURE. 



57 



calculation was made on the basis of the average for the five pairs of 

 plots N and S, and the area for which results are computed is 1 acre. 

 The excess cost of handling manure where it was piled when hauled out 

 and spread in the spring has been estimated at $2 per acre where the 

 work is done upon a large scale, for on such scale the manure spreader 

 would be used in applying the manure from the heaps in the spring, 

 whereas conditions when manure is hauled out and appUed during the 

 winter are by no means always such in our climate as to make the use 

 of the manure spreader practicable. It is believed, therefore, that the 

 figure taken — $2 per acre — is sufficient to represent the difference in 

 cost under conditions existing on farms of sufficient size to justifj^ the 

 use of the spreader. 



The same values have been used in the calculations throughout the 

 entire period covered by the two tables, although prices during the past 

 four or five years have advanced materially, so that the figures taken as 

 applied to these years are considerablj' too low. The reader will perhaps 

 at once think that so also must be the figure representing the difference 

 in the cost of handling the manure; but in this connection it is important 

 to remember that during the past eight years no manure has been appUed 

 to any of the plots, so that the question of the excess cost of handling 

 does not affect the results as j)resented in Table XII. 



Table XI. — Calcnlated Results per Acre for the Period of Annual 

 Application of Manure. 



Balance in favor of spring, $1.64. 

 Average for 1 year, $0. 14. 



' No manure applied in 1907; cost of applying deducted. 



