46 EXPERDIENT STATION. [Jan. 



plication of a lioiiic-iiiadc luixturc, containing much less phos- 

 phoric acid and more potash than is a])plied to the other plots. 

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

 regularly alternated. The croj) of the past season was hay. 

 Owing to the marked deficiency in rainfall already referred to 

 the rowen crop was almost an absolute failure. The average 

 yields were at the following rates per acre : — 



Pounds. 



On the foililizer imcIi in pliosplioric acid and low in potash : ^ — 



Hay, ;5,2(i() 



Koweii, .......... 330 



On tlie i'crliiizc'i' low in i)liosi)lioric acid and rich in potasli: — 



Hay, 3,r)()() 



Rowen, 240 



The residts of the jiast season are similar to those Avliich 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 

 l)een greater than on the others. 



VIII. South Acre 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 

 ])resent time has lieen as follows: corn, corn, oats, grass and 

 clover, grass and clover, corn (followed by nmstard as a catch 

 crop), rye, 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 ]»lowe(l 

 nuder, corn. During the continuance of the experiment the 

 field has Ix^en 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 wlncdi bav(> usually been o])taiued with that cro]>. Pot- 

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

 fertilizer plots, three in nund:)er, was at the rate of 4.05 bushels 

 per acre. Muriate of ]iotash alone increases the crop to nearly 

 23 bushels. Nitrate of soda alone gives a cro]) of 9 bushels. 

 Dissolved bone black alone c,ives a yield at the rate of 4.21 



