ROTATIONS IN THE NORTH ATLANTIC STATES 277 



L In the spring-wheat section (Fig. 175), the following rota- 

 tion has been recommended: 1. Spring wheat (three years). 2. 

 Clover (one year). 3. Corn (one year). 



FIG. 174. Tobacco acreage. 



FIG. 175.^ Where spring wheat grows best. 



FIG. 176. Kafir and milo acre- 

 age. 



Rotations for Dry-Land Farming. (Great Plains area): 



Important Crops. Winter wheat, spring wheat, oats, corn, 

 barley, hay, rye, kafir corn (Fig. 176), broom corn, sorghum 

 and potatoes. 



Important Legumes. Alfalfa, red 

 clover, soybeans, vetch, peas and cowpeas. 



Rotations. Little information exists 

 on crop rotation for dry-land farming, 

 since only recently has this subject been 

 given any attention in the West. The 

 following are some of the best rotations 

 at present: 



A 1. Corn. 2. Winter or spring wheat. 3. Oats. 



B 1. Barley. 2. Oats. 3. Corn. 



C 1. Summer fallow. 2. Winter wheat. 3. Oats. 



D l.Corn. 2. Corn. 3. Oats or wheat. 4. Wheat. 5. Clover. 



In sections where medium red clover and corn cannot be grown, 

 cowpeas may be substituted for the clover in rotation (D), and 

 kafir corn for the corn. 



E 1. Alfalfa (six to eight years). 2. Corn (one year). 3. 

 Oats, barley or winter wheat (one year) . 4. Winter wheat (three 

 years). 5. Kafir corn or sorghum. If alfalfa leaves the ground 

 very dry, an early variety of sorghum is best to follow the 

 alfalfa. For sections in which the rainfall is especially scant 

 the rotation should include summer fallow at least every third or 

 fourth year. 



Rotations in the North Atlantic States. This group of states 

 includes Maine, New Hampshire, Vermont, Massachusetts, Rhode 

 Island, Connecticut, New York, New Jersey and Pennsylvania. 



