FARM MANURES 



167 



retained in the body; in the case of milk cows about 10 

 per cent of the ash of the food is recovered in the milk. 



185. Manurial Value of Foods. --The manurial value 

 of a fodder is determined from the amount and com- 

 mercial value of the nitrogen, phosphoric acid, and 

 potash present in the fodder. A ton of clover hay, for 

 example, contains 35 pounds of nitrogen, 14 pounds of 



NITROGEN 



N 

 LBS. 



PHOSPHORIC ACID 

 P 2 3 

 LBS. 



POTASH 

 K 2 

 LBS. 



Timothy hay 25 



Clover hay 35 



Wheat straw 1 1 



Oat straw 12 



Wheat 45 



Oats 33 



Barley 40 



Rye 42 



Flax 87 



Corn 32 



Wheat shorts 48 



Wheat bran 54 



Linseed meal 100 



Cottonseed meal 130 



Milk 10 



Cheese 90 



Live cattle 53 



Potatoes 7 



Butter ' i 



Live pigs 40 



9 

 14 



4 

 4 



20 



16 

 18 



20 

 32 

 H 

 31 



52 



35 



35 



3 



23 

 37 



3 



i 



17 



40 

 30 



12 



18 



12 

 II 

 II 



13 

 H 



8 



20 

 30 

 2 5 

 56 



3 



5 



3 

 ii 



i 



3 



