40 



THE POTATO, 



" These figures show that the mixture of artificial 

 manures required to supplement a moderate application 

 of dung should be complete, i.e., it should contain nitro- 

 gen, phosphorus, and potassium. The omission of muriate 

 of potash caused a reduction in the profit obtained of 

 almost 1 per acre, while the further omission of the super- 

 phosphate reduced the profit by 34s. more. 



" The foregoing conclusions are very considerably 

 strengthened when the results of last year's experiments 

 are compared with those of similar experiments conducted 

 during the two previous years. This comparison can be 

 made from the following table: 



Scottish Experiments in Manuring 1 . The re- 

 port for the year 1901 of some extensive trials in manuring 

 potatoes, carried out on fifteen farms in different parts of 



