144 



HATCH EXPERIMENT STATION 



[Jan, 



cords per acre. Wliere manure is used with potash, the 

 rates of application are : manure, 4 cords ; high-grade sul- 

 fate of potash, 160 pounds per acre. Manure alone is applied 

 to plots 1 and 3 ; the lesser quantity of manure and high- 

 grade sulfate of potash to plots 2 and 4. Estimating the 

 manure alone as costing $5 per cord, applied to the land, the 

 money difference in the cost of materials applied is at the rate 

 of $5.30 per acre, the manure and potash costing that amount 

 less than the larger quantity of manure alone. The tables 

 show the rates of yield on the several plots, and the averages, 

 under the two systems of manuring. 



Yield of Corn, 1.904. 



Plots. 



Corn 

 (Bushels). 



Stover 

 (Pounds). 



Plot 1 (manure alone), 

 Plot 2 (manure and potash), 

 Plot 3 (manure alone), . 

 Plot 4 (manure and potash). 



68.25 

 66.25 

 66.50 

 58.25 



5,840 

 5,280 

 4,280 

 4,840 



Average Yields jmr Acre. 



The averages made show an equal amount of stover pro- 

 duced under the two systems of manuring, and slightly more 

 than 5 bushels of corn per acre less on the combination of 

 manure and potash than on the larger quantity of manure 

 alone. This difference in yield is not sufficient to pay the 

 added cost of the larger quantity of manure applied to plots 

 1 and 3 ; but, since manure is an article of home production 

 on most farms where corn is grown, not much importance 

 would be attached to this point by the average farmer. The 

 corn crops produced under the two systems of manuring 

 previous to this year have been substantially equal. The 

 inferiority in yield this year is of consequence only on Plot 

 4 ; and it is suspected that accidental variation in conditions 

 determined the smaller product on this plot, rather than the 



