Farm Management and Farm Crops 103 



crop rotation is often carried out on Southern farms. A Southern 

 A, B, and C represent the fields into which a farm is 

 divided. There are three principal crops, and each of 

 these is raised in a different field each year. Cowpeas are 

 planted in corn at the last cultivation and are either 

 harvested with the cornstalks for hay, pastured off, or 

 plowed under (Fig. 81). During the fourth year the 

 arrangement of crops is the same as it was during the 

 first year. 



FIRST YEAR 



A THREE-YEAR ROTATION 



SECOND YEAR 



THIRD YEAR 



In the corn belt a crop series often used on farms where 

 much livestock is kept is (i) corn, (2) oats, (3) wheat, 

 (4) timothy and clover. A common New England dairy- 

 farm rotation is (i) corn, (2) oats (often sown with cow- 

 peas) , and (3) two years of timothy and clover. (Exp. i .) 



The relative importance of the principal farm products 

 of the United States is shown by the figures for 1917, 

 given on the following page. The first column of figures 

 gives the total value of each crop produced, and the 

 second column (given to aid the memory) shows how 

 much of this value each person in this country would 



A corn-belt 

 and a 

 dairy-farm 

 rotation 



Field crops 

 produced 

 during one 

 year 



