CHAPTER XIX 



COMPOSITION, FERTILIZER AND COEFFICIENT 

 TABLES 



This chapter contains tables showing the aver- 

 age composition of American forage crops and 

 feed stuffs, together witli the fertiUzer constitu- 

 ents contained in them, and the average coeffi- 

 cients of digestibility. 



The analyses represent the average as near as 

 may be, although it should be understood that 

 average compositions of products of varying qual- 

 ity are a guide only when accompanied with 

 knowledge of the possible variations that may 

 occur; they are chiefly useful in showing differ- 

 ences in the composition of groups, rather than 

 giving exact information as to what may be ex- 

 pected under different conditions. This is particu- 

 larly true in the case of crops used for green 

 forage, as the range in content of dry matter is 

 very wide, owing to the necessity of beginning to 

 harvest when the plants are immature and con- 

 tinuing it so long as they remain palatable. The 

 composition of fine feeds also varies widely, 

 although it is possible now to so classify as to 

 eliminate the variations that formerly existed. 



(344) 



