81 



RESULTS OF THE ADDITION OF PHOSPHORIC ACID TO 



Nothing 



Oats, bushels per acre, 0. 

 Straw, pouuds " 0. 



Value of average net increment, $1.27 



Financial result, 3.53 loss. 



RESULTS OF THE ADDITION OF POTASH TO 

 Nothing. 



Oats, bushels per acre, 5.20 

 Straw, pounds " 267 



Value of average net increment, $3.38. 



Financial result, 0.18 gain. 



RESULTS OF THE ADDITION TO NOTHING OF 



"Complete" Barn-yard Land 



fertilizer. manure. plaster. Lime. 



Oats, bushels per acre, 15.63 18.14 —1.56 5.U 



Straw, pounds " 1720 3260 —70. —97. 



Fertilizer. Manure. Plaster. Lime. 



Valueof increment due to $14.70 $22.11 $2.17 



Value of decrease due to $1.06 



Financial result, 2.70 gain 2.89 loss 1.78 loss 1.21 gain 



It will be noticed from a study of these comparisons that the 

 results of the use of nitrate of soda in this experiment are precisely 

 similar to those obtained in Worcester (p. 76). It proves more 

 useful than either phosphoric acid or potash; and, as in Worcester, 

 gives less increase when used either with muriate of potash alone or 

 with muriate of potash and phosphoric acid than on the other plots. 



Our experiments with oats then, although limited in number, 

 strongly indicate the advisability of applying a small quantity of 

 nitrate of soda for this crop. 



The- manure gives a larger crop than " complete " fertilizer; but 

 it must be remembered that this land has received the same treat- 

 ment for three years ; and that during that time the plot to which 

 manure has been applied has received about seven times as much 

 nitrogen and much more phosphoric acid and potash than the plot 

 which has been dressed with " complete " fertilizer. 



Conclusions: It is not common in the practice of the farmers of 

 this state to use either fertilizers or manure for the oat crop ; but in 

 view of the results of these experiments, it seems probable that Ihe 

 3 



