EXPEKIMENTS WITH POTATOES 



115 



By comparing the above tables we can deduce the following 

 conclusions : 



(1) In the first place, without any potash used we were able 

 to raise a fairly good crop of potatoes, which shows that our 

 soils contain a fair amount of available potash. 



(2) By the addition of 150 pounds of muriate of potash the 

 yield was increased 30 bushels of marketable potatoes at a cost 

 of $3.22, or approximately 11 cents a bushel. 



(3) By using 300 pounds of muriate of potash the yield was 

 increased 46 bushels of marketable j)otatoes, at a cost of $6.45, 

 or exactly 14 cents a bushel. 



(4) When 450 pounds of muriate of potash was used the yield 

 resulted in an increase of 48 bushels of marketable potatoes, at 

 a cost of $9.67, or approximately 20 cents a bushel. 



(5) Taking everything into consideration, therefore, labor, 

 culture, etc., when yield and expense are considered, 10 per 

 cent, of potash or 300 pounds of muriate of potash give the best 

 results. 



Experiment IY. 



Comparative results hettveen applying comniereial fertilizer, 

 or so-called potato ma^iure, all in the hill or one-half in the hill 

 and the remainder broadcast. 



The method of preparation of the land was exactly the same 

 otherwise. 



The fertilizer used was Stockbridge potato manure at the 

 rate of 1,500 pounds per acre. The results were as follows : 



From this experiment the plots in which the fertilizer Avas 

 sown one-half broadcast and harrowed in and the remainder 

 placed in the hills, gave the heavier yield. This yield, however, 

 was largely of small or unmarketable tubers. The plot with 

 the fertilizer all apjDlied in the hill gave the largest yield of 



