HIS BULLETIN, devoted chiefly to a description 
and illustration of the control of the alfalfa 
weevil by means of arsenical sprays, is intended for 
the man who is already well acquainted with the 
appearance of the pest and its effect upon his crop. 
There are thousands of such farmers in Utah, 
Idaho, Colorado, and Wyoming, and their aggregate 
losses from this cause reach hundreds of thousands 
of dollars each year. The treatment described in 
these pages can be used throughout most of this ter- 
ritory and is suitable for both large and small acre- 
ages. It has been prepared during seven years of 
study and experiment and one séason of thorough 
field trial in cooperation with farm bureaus, in the 
course of which over 4,000 acres were successfully 
sprayed by practical farmers, many of whom were 
without experience in any kind of spraying. The 
Farm Bureau News, of Sevier County, Utah, re- 
ports a saving of $15,000 by this means and estimates 
from other sources raise the total to $40,000. 
Contribution from the Bureau of Entomology 
L. O. HOWARD, Chief _ 
Washington, D. C. December, 1920 
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