Bui. 112, Bureau of Entomology, U. S. Dept. of Agriculture. 



Plate 



Fig. 1. — Volunteer growth of alfalfa on vacant lots in Salt Lake City, Utah. The alfalfa 

 plant beside the hat contained at the time approximately 1,200 to 1,300 eggs. This 

 was in the midst of the egg-laying time. (Original.) 



-, • ■ " 



Fig. 2. — Volunteer alfalfa growing along the right of way of the Oregon Short Line Railway a 

 short distance north of Salt Lake City, Utah. (Original.) 



Conditions Favoring the Spread of the Alfalfa Weevil. 



