U. S. DEPARTMENT OF AGRICULTURE. 

 BUREAU OF PLANT INDUSTRY — BULLETIN NO. 187. 



B T. GALLOWAY, Chief of Bureau. 



A STUDY OF CULTIVATION METHODS AND 

 CROP ROTATIONS FOR THE 

 GREAT PLAINS AREA. 



E < C: CHILCOTT, 



Agriculturist in Charge, Assisted by Members of the 

 Field Staff of the Office of Dry-Land 

 Agriculture Investigations. 



Issued November 5, 1910. 



WASHINGTON: 

 government printing office. 



