The BuLLETiisr 

 Three-year Rotation. 



101 



First Year — Corn, with soja beans or cowpeas drilled in row at planting 

 or before first cultivation. They may too be sown broadcast before last 

 cultivation. 



Second Year — Wheat, red clover. 



Third Year — Red clover. 



This is a short rotation admirably adapted to the grain farms of the 

 section. The corn stover and wheat straw should be plowed under or 

 fed to stock and the manure carefully saved an'd returned to the soil. 

 The soja beans or cowpeas should be turned under and likewise the last 

 crop of red clover. 



Fig. SIII. Building up the productivity of the soil by sowing cowpeas broadcast in the 



corn at tlie last working. 



In starting this rotation we would recommend an application of 200 

 to 400 pounds of acid phosphate under the corn and 75 to 100 pounds of 

 nitrate of soda used as a top dressing. If available, farm manure may 

 be used with the phosphate and the nitrate eliminated. This fertiliza- 

 tion applies to the more extensively tilled types. The nitrogen appli- 

 cation could well be reduced or left off entirely on new land or on the 

 darker phases or types. Unless lime has been applied within the last 

 two or three years, an application of 1,000 pounds of ground limestone 

 per acre should be added to those soils on which legumes are to be grown 

 and to those containing a considerable amount of organic matter. The 

 lime should be applied broadcast and be thoroughly incorporated with 

 the surface soil with a disk or spike-tooth harrow at the time of pre- 

 paring the land for corn or wheat crop. 



The first year wheat is grown it should receive similar treatment to 



