PROFITABLE FARMING. 49 



A comparison of the foregoing manurial trials 

 shows that the largest profit was obtained where 

 the smaller quantities of phosphate and potash 

 were employed. But it must be borne in mind 

 that, though the larger quantities applied in the 

 Midland and Devonshire experiments could not 

 be utilised by the Mangel crop alone, they would 

 remain in the soil for the benefit of the succeed- 

 ing crop. 



Similar manurial trials have been conducted 

 by the County Authorities in Somersetshire and 

 by the Irish Department of Agriculture, and 

 they confirm the above examples. 



A top dressing of quick-acting nitrogenous 

 manure, such as nitrate of soda or Top dreS8- 

 nitrate of lime, after singling, al- ing* of 

 most invariably gives most bene- Nitrates very 



ficial results. beneficial. 



The average crop of Mangels in Great Britain 

 for the last ten years has been 19 tons 13 cwt. 

 per acre. The trials quoted in England show 

 that it is possible to increase the yield to about 

 35 tons, or a gain of more than 15 tons per acre. 

 The importance of this will be better realised 

 by the following statement which appears in 

 the Report of the Midland Agricultural and Dairy 

 College for 1910 : " It should be remembered 

 that when we are manuring roots we are not only 

 manuring for a big crop but also manuring for a 

 big dung heap. This means improvement of 

 the holding a gradual raising of the condition 

 of the soil." 



There have been many suggestions in this 



