Food for Plants. 189 



rule, but may adapt rotations to the varymg demands 

 of local market conditions. 



Some American Rotations. 



1. Potatoes. 1. Potatoes. 



2. Wheat. 2. Wheat. 



3. Clover. 3. Grass, timothy and clover. 



4. Clover. 4. Grass, timothy and clover. 



5. Wheat, oats or rye. 5. Corn. 



1. Roots. 1. Roots. 



2. Wheat. 2. Wheat. 



3. Clover. 3. Clover. 



4. Clover. 4. Clover. 



5. Corn, oats or rye. 5. W^heat. 



6, Oats. 



