Issued October 15, 1912. 



U. S. DEPARTMENT OF AGRICULTURE. 



BUREAU OF PLANT INDUSTRY— BULLETIN NO. 257. 



B. T. GALLOWAY, Chief of Bureau. 



THE WEED FACTOR IN THE CULTIVATION 



OF CORN. 



J. S. GATES, 



Assistant Agriculturist, 



AND 



H. R. COX, 



Agriculturist, 



Office of Farm Management. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



1912. 



