LIQUID PORTION OF MANURE VALUABLE 



215 



manure produced is necessarily enriched in phosphorus (Feed 

 table in Appendix). 



The age of the animal also affects the value of manure. Grow- 

 ing animals remove much more elements, especially nitrogen and 

 phosphorus, from the ration than do mature animals. 



The character and amount of bedding and litter also have much 

 to do in determining the value of manure. Sawdust and shavings 

 add little or no value, and may even lower the value of manure. 



Fig. 144. — Dollars are trickling from this manure pile into the pond. No farmer can 



afford to care for manure in this way. /' , - . 



The more bedding and litter incorporated with the excrement, the 

 more bulky the manure becomes. 



Amotmt of Manure Produced by Farm Animals. — Roughly 

 speaking, it requires about twenty-five cows to produce a ton of 

 manure in one day, including what is actually collected in the 

 stables ; about thirty-three to forty horses when kept in the stable 

 all day, and about sixty when they are working; 160 hogs; and 

 about 500 to 800 lambs when fed in the feeding pen. 



Liquid Portion of Manure Valuable. — Of the total amounts 

 of the fertilizing elements contained in manure, about one-half 

 of the" nitrogen and sixty per cent of the potassium are found in 

 the liquid excrement. Thus, the liquid manure is practically as 

 valuable in fertilizing elements as the solid. This fact emphasizes 



