Organic Manures 



urea and hippuric acid. When applied to the 

 soil these compound nitrogens are rapidly trans- 

 formed into matter assimilable by the plants, so 

 that the effect of an application of urine will only be 

 felt during one season. 



The best way of using it is to absorb it in farm- 

 yard manure, which will be considerably enriched 

 thereby and form a complete manure. But the 

 urine is often too abundant to be completely absorbed. 

 It is therefore carefully collected in impermeable 

 tanks, and watered on to the manure, which it helps 

 to mature. Unfortunately, on many farms it is 

 altogether neglected ; and allowed to flow away into 

 the drains, causing serious loss which must be 

 replaced by bought manures if the farm is not to 

 become impoverished. This is an unpardonable 

 waste. 



The urine used in watering the manure heap 

 is itself further enriched by the soluble potash of 

 the manure, the few phosphates and the portion of 

 nitrogen rendered soluble in the course of the trans- 

 formations which the manure has undergone during 

 the ripening process. Being alkaline, it (the urine) 

 dissolves part of the humic matter which gives it 

 its dark colour. In itself, solid farmyard manure 

 is far from being complete, and it is necessary to 

 use with it a corresponding proportion of urines, 

 which are then called liquid manure. 



On all good farms, that is to say practical farms, 

 the liquid ought to be collected directly after 

 emission or after it has passed through the manure. 

 It ought to be stored close to the manure heap so 

 as to be easily handled in watering in order to prevent 



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