CORN 



179 



the samples giving lowest yields average 44.5 bushels per acre, or only 

 about two-thirds as much as the best yielding samples. Note also that 

 over 100 samples of imported seed averaged less per acre than did nearly 

 1000 samples of home-grown seed. Likewise, the 360 ear-to-row tests 

 giving the highest yields were no better than the best one-tenth of the 

 larger samples tested. One-fourth of the ear-to-row samples giving the 

 lowest yield averaged a little more than two-thirds as much as the one- 

 fourth giving the highest yields. The results show wide differences and 

 emphasize the importance of the farmer selecting for his soil and locality 

 the variety that will do best. Such selection will evidently make a great 

 difference in the total yield of corn on a given acreage. 



Corn Acreage by States, 1915. 

 (Three ciphers omitted.) 



The Chief Corn-Growing States. — In order of their respective pro- 

 duction, they are Illinois, Iowa, Missouri, Nebraska, Indiana, Kansas, 

 Ohio, Texas, Oklahoma and Kentucky. These ten states produce a little 

 more than 70 per cent of all the corn produced in the United States. 

 More than 80 per cent of the corn produced in the United States is con- 

 sumed within the counties in which it is grown. The great use of corn 

 is as a feed for livestock. There are a few counties, especially in the 

 State of Illinois, where a considerable portion of the corn is marketed and 

 goes outside of the counties in which it is produced. 



North America produces three-quarters of the world's corn, nearly 

 all of which is produced within the borders of the United States. Of the 



