68 



24. On potatoes, sulphate of ammonia gives very large 

 increase almost always larger than that from 

 nitrate of soda. Sulphate is also less favourable 

 to the development of disease. Average dressing, 

 i to 2 cwt. per acre. 

 25. On beans, sulphate of ammonia does not give any 



profitable result. 



26. On clover, sulphate of ammonia is as effective as 

 other nitrogenous manures, but is rarely profitable. 

 27. On grass land, sulphate of ammonia produces a 

 yield in weight about equal to, or slightly less 

 than, nitrate of soda. It specially encourages the 

 grasses at the expense of the clovers. The pro- 

 duce seems to be more palatable to stock than 

 that of nitrate of soda, and to have a high feeding 

 value. Average dressing, i to if cwt. per acre. 

 NOTE. In the above summary, all comparisons between 

 sulphate of ammonia and nitrate of soda are between equal 

 quantities of nitrogen in the two forms. This is equivalent 

 to comparing the effect of a little over f cwt. of sulphate 

 with that of i cwt. of nitrate. 



