350 



THE BOOK OF CORN 



miirat anil Curn CntnttareD 



It is a difficult matter to arrive at a fair basis for an in- 

 telligent comparison of two such dissimilar crops as wheat 

 and corn. Consultation with experiment station workers and 

 others indicates that a wheat crop yielding fourteen bushels 

 per acre will contain about 1400 pounds of straw of a given 

 water content. In like manner, twenty-five bushels of shelled 

 corn may be produced on an average of 3000 pounds of field 

 cured corn fodder. While these two conclusions may there- 

 fore be taken to fairly represent average conditions in Amer- 

 ica, there are many wide variations from this standard. 



Such a crop of wheat grown on one acre, also of corn, 

 would have (under average conditions) about the composi- 

 tion below stated. (For explanation of the terms used, see 

 note introduction to Table A, Appendix, on average composi- 

 tion of maize, and for computation of "manurial values" see 

 Table B.) 



CompoBitioii of the 

 crops mentioned 



14 bu 

 wheat 

 grain 



25 bu 

 com 

 grain 



1400 IbB 



hay from 



wheat straw 



3000 lbs 



hay from 



corn fodder 



Total 



for 

 wheat 



Total 

 for 

 com 



Water, lbs per acre 

 Dry matter, lbs per 



acre 



Ash, lbs per acre . . 

 . Dlgestibleprotein, 



lbs per acre 



Digestible fiber, 



per acre 



Digestible starch, 



per acre 



Digestible fat, per 



acre 



Fuel value (calo 



ries) 



Nutritive ratio. . . . 

 Feeding value, per 



acre 



Nitrogen, lbs per 



acre 



Phosphoric acid, 



lbs per acre i 



Fotashjlbs per acre 

 Manurialvalue.per 



acre 



Total value, per 



acre 



84 



756 

 15 



626 



14 



1,300,353 

 lto7 



$7.31 



20 



$3.53 

 $9.07 



154 



1246 

 21 



111 

 12 



60 



2,195,700 

 lto9 



$12.32 



26 



10 

 6 



$4.48 



$14.56 



168 



1232 

 62 



10 



272 



283 



6 



1,035,972 

 lto9 



$6.58 



17 

 7 



$1.64 



$8.12 



1800 

 49 



45 

 169 

 432 



21 



1,146,620 

 ltol4 



$12 



53 



16 

 27 



$9.60 



$21.60 



252 



1988 

 67 



96 

 280 

 809 



20 

 2,336,326 



1354 



3046 

 70 



156 



181 



1318 



81 



4,342,320 



$13.89 



29 



2S 

 12 



$5.07 



$7.19 



$24.32 



84 



26 

 33 



$14.08 



$36.16 



