248 SOILS AND FERTILIZERS 



The farm is divided into eight fields of 20 acres 

 each ; seven fields are brought under the rotation, 

 while one field is left free for miscellaneous purposes. 

 Each year there are produced 20 acres of corn, 20 

 acres of timothy and clover hay, 10 acres each of 

 wheat and flax, 20 acres of barley, and five acres each 

 of corn fodder, rye, peas, and potatoes, while 20 acres 

 are reserved for pasture. The main income is derived 

 from the sale of live stock and dairy products. 



Problems on Rotations 



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

 lowing 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 object 

 being potato culture. 



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

 and sodium nitrate 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, each continuously ? 



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

 grown, and where clover and timothy fail to do well; wheat and all 

 small grains thrive ; also millet, peas, 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 being the important market crop. 



