WHEAT 



47 



In those parts of the South where red clover is grown, 

 a good three-year rotation is : 



First year : wheat, with red clover seed. 



Second year: red clover. 



Third year: corn. 



Wheat is again grown the fourth year. 



Where neither red clover nor cotton succeeds, crimson 

 clover may be used instead of red clover, as follows : 



First year: late corn, cultivated late, and the middles 

 seeded to crimson clover in September. 



Second year: tobacco, late corn, or other summer crop 

 not requiring early planting. 



Third year: wheat, followed by cowpeas. 



In those parts of the cotton-belt where red clover does 

 not thrive, the following four-year rotation is often desir- 

 able : 



First year: cotton, with crimson clover seeded in 

 September between the rows. 



Second year : cotton. 



Third year: corn, with cowpeas between the rows. 



Fourth year: wheat, followed by cowpeas. 



50. Fertilization. A crop of 25 bushels of wheat, with 

 its accompaniment of say 2500 pounds of straw, removes 

 from the land approximately the following amounts of 

 plant-food : 



