240 SOILS AND FERTILIZERS 



Problems on Rotations 



1. Plan a rotation for general farming ( 160 acres) using the 

 following crops: clover, timothy, barley, oats, potatoes, and corn. 

 The soil is in an average state of fertility. Twenty-five head of 

 stock are kept. 



2. Plan a three-course rotation for a sandy soil, the main ob- 

 ject being potato culture. 



3. Plan a seven-year rotation for grain farming, using manure 

 and a commercial fertilizer once during the rotation. The soil is 

 a clay loam in a good state of fertility. 



4. Plan a rotation for general farming on a sandy loam. 



5. How would you proceed to bring an old grain farm from a 

 low to a high state of productiveness ? Begin with the feeding of 

 the stock. 



6. Using commercial and special purpose manures, how would 

 you proceed to raise wheat, potatoes, and hay, in rotation and con- 

 tinually ? 



7. Plan a rotation for a northern latitude, where corn cannot 

 be grown, except for fodder, and where clover and timothy fail to 

 do well ; wh^at and all small grains thrive, also millet, bromus 

 inermis, rape, and some of the root crops. The soil is a clay loam, 

 resting on a marl subsoil. Manure is very slow in decomposing. 

 The rotation should be suited to general farming, wheat or flax 

 being the important market crop. 



8. Plan for a southern farm a rotation in which cotton forms 

 an important part. 



