658 



WEED FLORA OF IOWA 

 FIELD 3.* 



Weed 



Date 



*On corn land that had been fall plowed. Field worked up and sowed to 

 small errain just before April 27. 



FIELD 4.* 



Weed 



Date 



•On land sowed to winter wheat. 



FIELD 5.* 



Weed 



Date 



•On old corn land. Stalks harrowed down just previous to April 20. 



