TYPES OF FARMING 45 



The necessary water might be supplied by irrigation, 

 but corn does not respond to irrigation as well as some 

 other crops. The dry air of an irrigated region is favorable 

 for some crops and injurious to others. Corn can be 

 grown by irrigation, but the increase in crop compared with 

 humid regions is not so great as is the increase with some 

 other crops, such as alfalfa, sugar beets, and wheat. 



\ I V 



FIG. 10. Distribution of the cotton crop in 190'J. One dot represents 



8000 bales. 



We may expect that corn will always be the leading 

 crop in the Middle West. There are a number of types of 

 farming based on corn as the major crop. 



35. Cotton. For cotton, there is no other large area 

 in the world that has such a favorable combination of 

 climate and soil as is found in southern United States. 

 We may expect that cotton will remain the leading crop 

 of the South. Thus far, it has been grown too exclusively, 

 just as corn has been grown with too little rotation in the 

 corn-belt. In both regions, rotations and types of farm- 



