DEPARTMENT OF AGRICULTURE 
DEPARTMENT CIRCULAR 274 
Washington, D. C. May, 1923 i 
DUSTING FOR THE COTTON BOLL WEEVIL. — 
B. Rh. COAD AND. T: PP. CASSIDY, 
Bureau of Entomology. 
DO IT RIGHT OR NOT AT ALL. 
ANY valuable lessons have been gained from the recent expan- 
sion of commercial weevil poisoning. It has again been shown 
that the boll weevil can be poisoned with profit if conditions ai 
favorable and if proper methods are used, but it has been emph.. 
sized anew that unfavorable conditions and improper methods ¢ 
lead only to failure. A survey of the poisoning by farmers 
previous years shows that an unfortunately large proportion were 
- not properly informed as to the conditions under which they should 
\ 
poison and the methods they should pursue. As a result there were 
many unnecessary failures. If better results are to be secured in 
the future, the operation must be more thoroughly understood. 
The present circular is prepared to give in a brief and. concise form 
the information needed by a farmer in deciding, first, whether it will 
pay him to poison and, second, the methods he should follow. 
Weevil poisoning is fully as important an operation as cultivation 
and deserves as much serious thought and attention. Unless you are 
willing to give this, you should not attempt to dust. Study these 
instructions carefully and follow them as closely as your conditions 
will permit. 
WHERE WILL IT PAY YOU TO DUST? 
It will pay to dust— 
If the weevils are really injuring your crop seriously, and 
If your land is sufficiently fertile to yield at least one-third bale per 
acre with weevil injury eliminated, and 
46063°—23 4 
