The manufacture of superphosphates depends on the existence of two different compounds of phosphoric acid and lime, one of which contains three times as much lime as the other.
Superphosphates from bone-ash, on the other hand, contain a mere trifle of ammonia, and when well made a very large quantity of biphosphate of lime.
Superphosphates made from bones alone are generally distinguished by a large quantity of ammonia, and a rather low per centage of biphosphate of lime.
The composition of superphosphates must necessarily vary to a great extent, and depends not only on the materials, but on the proportion of acid used for solution.
It will thus be seen to be incapable of producing very high-class superphosphates --i.
Further, it is highly inadvisable to mix superphosphates with basic slag, which contains a large percentage of both iron and free lime.
Superphosphates as manufactured may be divided, generally speaking, into three classes--viz.
Commercial superphosphatescontain more or less ammonia, and had they been used in these experiments, they would have shown a better result than the pure article.
My own opinion is, that these superphosphates are not the most economical artificial manures that could be used for wheat.
Little faith in superphosphates and compounded manures, at selling prices.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "superphosphates" in a variety of sentences. We hope that you will now be able to make sentences using this word.
