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FLORIDA ENTOMOLOGIST 
Official Organ of The Florida Entomological Society, Gainesville, 
Florida. 
dbus, WATSON: ccc esse og eee rene Editor 
Witton: NEWEUL2. 22 33 ea eee Associate Editor 
ATED BEYER 4 2205.2. itso Se os ee Business Manager 
Issued once every three months. Free to all members of the 
Society. 
Subscription price to non-members is $1.00 per year in ad- 
vance; 35 cents per copy. 
ENTOMOLOGY AT THE AGENTS’ MEETING 
The eleventh annual conference of the county demonstration 
agents was held at the University from September 7 to 14. There 
were four scheduled talks on entomological subjects and much 
discussion during committee meetings, laboratory and informa! 
conferences. 
Mr. W. W. Yothers outlined the life history of the rust mite. 
At least 90% of them complete their life cycle, from egg to egg 
in nine days. Exposure to sulphur kills them in fifteen seconds. 
A very live topic was that of dusting citrus trees for the con- 
trol of rust mite. Mr. DeBusk spoke of the results of some 
dusting done in his county in cooperation with the Experiment 
Station. The control on the dusted plots was as good as on the 
sprayed plots and the cost was only about one fourth that of 
spraying. Mr. Kime thought it might be necessary to dust two 
or three times to secure as good a control as with spraying. 
Other agents spoke of the satisfactory results of dusting in their 
counties. Of even more importance than the cheapness of dust- 
ing as compared with spraying is the rapidity of the operation. 
In large groves, even tho spraying may be started at the first 
sign of danger, much damage may be done before the entire 
grove can be covered. Another point which might have been 
mentioned is that of safety. Much fruit was burned last year 
as a result of spraying during hot weather. Mr. Yothers re- 
ported as good results from the use of straight flowers of sulphur 
as with the mixture of sulphur and lime. 
Mr. Yothers spoke of the work done at his laboratory on the 
entomogenous fungi by Dr. Spear. He came to the conclusion 
that the Red Aschersonia was spread mostly by the whitefly 
crawlers. This points strongly to the conclusion that the best 
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