46 EXPERIMENT STATION. [Jan. 



plication of a honicMnade niixtnre, containing mnch Iojss phos- 

 phoric acid and more potash than is applied to the other plots. 

 For the past fifteen years corn and hay, two years each, have 

 regularly alternated. The crop of the past season was hay. 

 Owing to the marked deficiency in rainfall already referred to 

 the ro"wen crop was almost an absolute failure. The average 

 yields were at the following rates per acre : — 



Pounds. 



On the fertilizer rich in phosphoric acid and low in potash : — 



Hay, 3,200 



Rowen, .......... 330 



On the fertilizer low in phosphoric acid and rich in potash: — ■ 



Hay, 3,500 



Rowen, 240 



The results of the past season are similar to those which we 

 have usually obtained, except that owing to the protracted 

 drought the production of rowen on the plots receiving the 

 larger proportion of potash is much lower than usual. In an 

 average season the yield of rowen on these plots has invariably 

 been greater than on the others. 



VIII. South Acke Soil Test. 

 The crop raised in the south acre soil test which has continued 

 in this field since 1889 was corn. The succession of crops grown 

 on this field from the beginning of the experiment up to the 

 present time has been as follows: corn, corn, oats, grass and 

 clover, grass and clover, coru (followed by mustard as a catch 

 crop), rje, soy beans, white mustard (plowed in), corn, corn, 

 grass and clover, grass and clover, corn, corn, corn, grass and 

 clover, grass and clover, corn, oats and clover, buckwheat plowed 

 under, corn. During the continuance of the experiment the 

 field has been limed at the rate of a ton to the acre three times. 

 The results of the past season with corn were entirely similar 

 to those which have usually been obtained with that crop. Pot- 

 ash is still the dominant element. The average yield on the no- 

 fertilizer plots, three in number, was at the rate of 4.05 bushels 

 per acre. Muriate of potash alone increases the crop to nearly 

 23 bushels. Nitrate of soda alone gives a crop of 9 bushels. 

 Dissolved bone black alone gives a yield at the rate of 4.21 



