Bui 123, Bureau of Entomology, U, S. Dept. of Agriculture. 



Plate XXIII. 



Fig. 1.— Beet Fields Separated By Strip of Alfalfa. (Original.) 



Fig. 2.— Field of Alfalfa Adjoining Field of Sugar Beets. (Original.) 

 CONDITIONS FAVORING THE SUGAR-BEET WIREWORM. 



