40 



HATCH EXPERIMENT STATION. 



[Jan. 



plot 0,375.1; plot 1, 420; plot 2, 377.5; plot 3, 337.5; 

 plot 4, 347.5 ; plot 5, 207.5 ; plot B, 320. 



The averages on the several fertilizers in pounds were : — 



So far as results justify conclusions, it would seem (1) 

 that the muriate shows itself superior to the sulfate of pot- 

 ash for this crop ivhen used with stable manure, and (2) that 

 the sulfate of ammonia is the best source of nitrogen for it. 

 That the sulfate of ammonia should prove the most useful 

 form of nitrogen supply with a crop making most of its 

 growth in the latter part of the season we have before ob- 

 served.* 



In other experiments with cabbages this year, where fer- 

 tilizers alone were used, the sulfate of potash gave much 

 larger yields than the muriate. f Here this is reversed. I 

 have at present no explanation to offer for this difference. 



Squashes. — This crop gave much the best yield on manure 

 alone, and the differences apparently produced by the several 

 fertilizers are not significant. The sulfate gives larger yields 

 than the muriate of potash in every case, while the sulfate 

 of ammonia makes the lowest showing among the fertilizers 

 supplying nitrogen. The details will not be given. 



Variety Tests with Potatoes. 

 The number of varieties tested this year was 94. The 

 seed used was all of our own raising. It was produced 

 under conditions similar in every respect and had been 

 similarly preserved. Of each variety, with a few exceptions 

 later noted, 80 sets were planted at the distance of 1 foot 



See eleventh annual report. 



t See page 28. 



