PROFITABLE FARMING. 



39 



I. WHEN GROWN WITH DUNG. 



If 10 or 12 tons of farm-yard manure per acre 

 are obtainable, it is very seldom necessary to do 

 more than apply about 4 cwts. per acre of high- 

 grade superphosphate in addition at seeding, or 

 proportionately larger quantities of the lower 

 grades, except, perhaps, in the case of very light 

 sandy soil, where 5 to 6 cwts. of potassic super- 

 phosphate might be used advantageously in- 

 stead. By such a method a far more profitable 

 return will be obtained than by using double the 

 quantity of farm-yard manure alone. 



In support of this statement the following 

 figures are interesting. 



The Irish Department of Agriculture, whose 

 experiments have been conducted on 

 more than 200 farm centres in every An exampla 

 county during ten years, show : 



from Ireland 





Turnips valued at 8s. per Ton. 

 Farm -yard Manure, 45. per Ton. 



Regarding the above, it is stated in the 

 official Journal for 1912 : " There seems little 

 doubt therefore that where farm-yard manure is 



