The Bulletin 31 



An application of 600 to 800 pounds of rock phosphate per acre to a 

 good crop of clover before it is turned under in the fall might furnish 

 much of the pliosphoric acid required by the crops during the second 

 period of rotation. Within a comparatively short time enough nitrogen 

 should be furnished by the soybeans, or cowpeas, the clover and the 

 roughage or stable manure, if the crops are fed and the manure saved 

 and applied back on the land or the crops are ploAved directly into 

 the soil after maturity. Then the use of nitrate might be entirely dis- 

 pensed with. The application of rock phosphate and lime should be 

 made every four or five years. Live-stock farming in connection with 

 this rotation might help in improving the productivity of these soils. 



FOUR-YEAR ROTATIONS 



A good four-year rotation is the same as the above, with oats and soy- 

 beans or cowpeas following corn the second year. 



Other four-year rotations which could be adopted in this county are : 



First Year. — Corn. 



Second Year. — Crimson clover and cowpeas or soybeans. 



Third Year. — Wheat and oats, red clover. 



Fourth Year.- — Red clover. 



Or for sections of the county in which cotton is grown one similar to 

 this might be used : 



First Year. — Corn. 



Second Year. — Wheat or oats, red clover. 



Third Year. — Red clover. 



Fourth Year. — Cotton, rye. 



A similar method of fertilization should be adopted with these four- 

 year rotations as is given for the three-year rotation. 



FIVE- OR SIX-YEAR ROTATIONS 



Any of these rotations with two years of pasture added would make 

 them even better adapted to live-stock farming. Where it is desired to 

 grow cotton, the following six-year rotation should under an intelligent 

 supplemental system of fertilization and proper cultivation give good 

 results. 



First Year. — Corn, with cowpeas in the row or sown broadcast just 

 before the last cultivation. 



Second Year. — Cotton, with rye sown broadcast in the cotton after 

 the first picking and covered with a harrow or light cultivator. 



Third Year. — Rye plowed under, cowpeas, wheat or oats. 



Fourth Year. — Wheat or oats, red clover. 



Fifth Year. — Red clover. 



The fertilizer here, too, would be similar to that indicated above for a 

 three-year rotation. 



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