32 a EXPERIMENT STATION. [Jan. 



The average yields to date under the three systems of top- 

 dressing are : — 



Pounds 

 per Acre. 



Wlien top-dressed with manure, 6,006 



When top-dressed with bone and potash, 5,824 



When top-dressed with wood ashes (slag and potash now used) , . 5,496 



The crop this year before cutting gave the appearance of a 

 large yield, but the weights show a yield smaller than the 

 average under each of the three systems of manuring. 



Sulfate of Ammonia v. Nitrate of Soda as a Top-dressing 

 FOR Permanent Mowings. 

 This experiment has been continued for ten years, and has 

 for its object the comparison of nitrate of soda and sulfate of 

 ammonia as a top-dressing for permanent mowings. All plots 

 have received an equal application of potash and phosphoric 

 acid. Owing to the scarcity of potash, none of this element was 

 applied in 1916 or 1917. With favorable weather for the pro- 

 duction of hay in 1916, a normal crop was obtained. In 1917, 

 the second year the potash was omitted, with weather un- 

 favorable for the production of good hay, the crop fell much 

 below the normal. 



Variety Test Work. 



The testing of different varieties of potatoes, alfalfa and soy 

 beans has been continued during the past year. 



The statement made last year in regard to the relative merits 

 of Grimm and Common alfalfa is further substantiated by the 

 results obtained this year, viz., that our results do not show the 

 Grimm to be an}' better than the Common. 



During the past three years we have had under comparison 

 with some standard varieties several seedling potatoes. None 

 of these has given promise of being any better than the stand- 

 ard varieties. 



The co-operative work with the United States Department of 

 Agriculture in testing different varieties of soy beans has been 

 continued. 



Nine varieties of winter wheat were sown this fall, and it is 

 planned to try a few varieties of spring wheat. 



