177 



Poultry manure is very rich in all the fertilising elements, but 

 especially so in nitrogen, due to the fact that the urinary secretions, 

 which contain large amounts of nitrogen as well as potash in readily 

 available form, are voided with the solid excrement. It quickly loses 

 nitrogen, however, by fermentation if not properly mixed with absorb- 

 ants or preservatives. 



Warington states that for an equal amount of live weight the sheep 

 produces on the same weight of dry food very much more manure than 

 the pig, while the ox produces even more than the sheep. 



It must be borne in mind, therefore, in estimating the manurial value 

 of the dimg of different animals that the quantity of dung voided by 

 one animal is much greater than that voided by another. The amount 

 voided by the cow, for example, is much greater than that voided by 

 the horse, so that the inferior value of the former is to some extent 

 compensated for by its greater quantity. 



INFLUENCE! OF QUALITY AND QUANTITY OF FOOD. 



In a given class of animals the value of the manure is determined 

 more by the nature of the food than by any other factor. The quanti- 

 ties of nitrogen, phosphoric acid, and potash in manure stand in direct 

 relation to the quantities of the same ingredients in the food. The 

 crop-producing power of the manure will be largely determined by the 

 nature of the food supplied to the animals producing it. The following 

 table, adapted from a bulletin of the New York Cornell Station, shows 

 the wide variation in manurial value of some of the more common 

 feeding stuffs. (See also table p. 171.) 



Fertilising value of feeding stuffs. 





Value of 

 nitrogen in 

 1 ton. 



Value of 

 phosphoric 

 acid in 1 

 ton. 



Value of 

 potash in 

 I ton. 



Total 

 fertilising 

 v»lue per 

 ton. 



Cornmeal 



$4.63 



$0.83 



$0.31 



$5.66 



Corn silage 



0.78 



0.14 



0.32 



1.24 



Crimson clover (green) 



1.29 



0.16 



44 



1.89 



Crimson clover hay 



6.63 



0.82 



2.26 



9.71 



Red clover hay 



5.70 



0.54 



1.31 



7.55 



Gluten meal 



15.09 



0.39 



0.05 



15.53 



Cotton-seed meal 



20.85 



3.66 



1.65 



26.16 



Linseed meal 



16.08 



2.28 



0.99 



19.36' 



Mgat scrap ... 



29.01 



6.01 



0.67 



35.69" 



Wheat ... 



7-08 



0.96 



0.45 



8.40 



Oats 



5.36 



90 



0.45 



6.70 



Skim milk 



1.74 



0.26 



1.08 



2.11 



Timothy Hay 



3.00 



0.43 



1.17 



4.60 



Wheat bran 



7 56 



3 40 



1.34 



12.30 



Wheat straw ... 0.81 



0.30 



1.02 



2.18 



tEuraips 



0.48 



0.14 



0.34 



0.06 



