114 HATCH EXPERIMENT STATION. [Jan. 



3. It is suggested, the suggestion being based upon our 

 observations, that in case the onions do not ripen well, and 

 where the proportion of scallions is large, the application of 

 lime be tried, or the proportion of acid phosphate increased. 

 If lime is to be used, it is recommended that about 1 ton of 

 quicklime per acre be applied. This should be slaked with 

 water, spread after ploughing, and deeply worked in with 

 wheel harrow. The best season is autumn or very early 

 spring. 



" Special " Corn Fertilizer v. Fertilizer richer in 



Potash. 



The experiments upon which it is now proposed to com- 

 ment have for their object the efibrt to determine the most 

 profitable combination of fertilizers to be used for the growth 

 of corn. The plan of the experiment and the results up to 

 the close of last season are given in full in our last annual 

 report. 



Results in recent years had led to the conclusion that this 

 field might be benefited by liming. It accordingly received 

 an application at the rate of 1 ton of air-slaked lime, applied 

 May 14 and thoroughly worked in. The kinds and amounts 

 of fertilizers used during the past season have been some- 

 what changed. To two of the plots (1 and 3) in the field 

 we have applied materials supplying the same quantity of 

 nitrogen, phosphoric acid and potash as would be furnished 

 by the use of 1,800 pounds of fertilizer, having the average 

 composition of the " special" corn fertilizers analyzed at this 

 experiment station in 1899. This average is as follows : — 



Per Cent. 



Nitrogen, 2,37 



Phosphoric acid, 10.00 



Potash, 4.30 



The fertilizers analyzed varied widely in composition, the 

 range for each of the elements being shown by the follow- 

 ing : — 



Per Cent. 



Nitrogen, 1.5- 3.7 



Phosphoric acid, 9.0-13.0 



Potash, 1.5- 9.5 



