SOME ADVANTAGES 



POSSESSED BY 



SULPHATE OF AMMONIA 



When compared wltli otter Nitrogenous Manures 



1. It is procurable everywhere of uniform composition (20J to 204' % of 



Nitrogen), and loses none of its nitrogen even after long keeping. Its 

 purity is proved by simply heating the crystals on red-hot iron, when 

 no residue is left, all passing off as white smoke. 



2. It has a higher nitrogen content than any other fertiliser. A saving 



in carriage is thus effected, for as much nitrogen can be conveyed in 

 10 tons of Sulphate of Ammonia as in over 13 tons of Nitrate of Soda. 



3. Considering the last seven years' average prices, we find the price of 



the unit of nitrogen to be cheaper in Sulphate of Ammonia than in 

 Nitrate of Soda — the difference of price per unit of nitrogen in 

 favour of Sulphate of Ammonia being is. gjd. 



4. All mixed manures containing quick nitrogen contain Sulphate of 



Ammonia, for this is the only form of quick nitrogen which leaves the 

 mixture dry and fit for sowing by hand or in the machine. This fact 

 renders Sulphate of Ammonia indispensable to the manufacturers of 

 mixed manures, for by its use are ensured both highest percentage of 

 nitrogen and good condition in the product. 



5. When Sulphate of Ammonia is dissolved in rain-watei it becomes at 



once fixed in the top soil, and no quantity of rain- or flood-water can 

 wash the nitrogen away, and after subsidence of rain- or flood-water the 

 full value of the manure is obtained by the crop. On the other hand, 

 excessive rain- or flood-water entirelj- removes Nitrate of Soda from the 

 top soil, to the loss of the growing crop. 



6. When Sulphate of Ammonia is used as 1 top-dressing in Spring the 



stimulation of the crop, although slow compared with the action of 

 Nitrate of Soda, is continued uniformly throughout the whole growth 

 of the crop — no sudden spurt, but fine healthy growth. 



7. By using Sulphate of Ammonia (with phosphoric acid an J potash) on 



land containing sufficient chalk, a great saving of use of Farmyaiui 

 Manure can be effected. Thus, using only IO-14 tons of Farmyard 

 Manure per acre together with the Sulphate of Ammonia dressing 

 (average cost of artificials not greater than 30s. per acre), crops are 

 obtained twice to three times as heavy as the average for the United 

 Kingdom. 



SULPHATE OF AMMONIA COMMITTEE 



4 FENCHURCH AVENUE, LONDON, E.G. 



