Simple Manures 



Simple Manures and Compound Manures. 



The simple manures contain only one fertilising 

 element, the compound manures more than one. 

 Among compound manures there are some which 

 are naturally compound, that is which contain 

 more than one fertiUsing element in the matter of 

 which they are made ; for example, guano, bones, 

 etc., and others which are compounded mechanically, 

 that is by mixing two or more manures, such as 

 fish guano and leather waste ; by mixing natural 

 compound manures and simple manures (fish guano 

 and sulphate of ammonia) ; by mixing simple 

 manures, kainite, and basic slag, or by mixing simple 

 or compound manures with neutral matter (sawdust 

 or sand), for example. 



Generally speaking, preference should be given 

 to simple manures for the following reasons. 



1st. The first and more important reason is 

 that simple manures are generally, or one might 

 say always, cheaper by the unit than compound 

 manures. They can be obtained practically direct 

 from their source, so that their purchase lies between 

 the producer and the consumer only. There is no 

 middle man, no handling and no useless transport. 



2nd. They are easily used ; only containing 

 one fertilising element one can calculate exactly 

 the quantity of each variety required. As much as 

 is necessary of any determined element can be given 

 independent of the quantities of other manures. 

 With compound manures this is scarcely possible, 

 because they will not contain the proportion of 

 elements suitable to a given soil. 



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