BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE O 
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White-fringed beetles 75 
Surveys show annual white-fringed beetle spread 75 
Wide cooperation in controlling white-fringed beetle 75 
Soil insecticides give effective white-fringed beetle control 76 
Cultural practices fail to influence beetle's development 76 
Nematodes infesting potatoes 76 
Cyst forming nematode found on tobacco 76 
Croplands surveyed for golden nematode 77 
Compensation paid for acreages withheld from host crop production, _ 77 
Improved device for detecting nematodes in soil 77 
Control of plant diseases 78 
White pine forests protected against blister rust 78 
Blister rust now controlled in over half of infested areas 78 
Power sprayers adapted for use in remote areas 78 
Encouraging results with defoliants 79 
Antibiotics tested against blister-rust cankers 79 
Additional rust-resistant pines found 79 
Blister rust spread determined 79 
Barberry eradication to control stem rust 80 
Broad areas freed of barberries 80 
Wind-spread of rust spores traced 80 
New chemicals tested against barberries 81 
Six million barberry plants certified for movement 81 
Extensive educational activities acquaint public with rust control 
methods 82 
General decline in peach mosaic infection 82 
More grower participation in phony peach control 82 
Life history of phony peach vectors determined 83 
Aircraft and special equipment center 83 
Organization of the Bureau of Entomology and Plant Quarantine 84 
THIS YEAR IN BRIEF 
Major accomplishments of the year included the practical control 
by an insect predator of the noxious Klamath weed in the California 
county most heavily infested, the inauguration of a Bureau supervised 
source-inspection service for Holland-grown bulbs prior to their ex- 
port to the United States, and the successful colonization in Mexico 
of parasites that have proved effective in controlling citrus blackflies 
in some infested areas. 
This year's research activities have again demonstrated the impor- 
tant place insecticides hold in reducing the enormous losses of crops, 
livestock, and stored products caused by insect attack. Departmental 
estimates are that 252 million pounds of the five major representative 
insecticides will have been used in crop protection activities through- 
out the United States for the crop year October 1951 to September 
1952. This compares with the consumption of 232 million pounds for 
this purpose in the preceding year. There was an ample supply of 
insecticides available for use this year. 
Five regional offices were established at the beginning of the fiscal 
year to handle administrative matters for all Bureau field stations and 
to direct regulatory and control programs. Substantial progress was 
made in consolidating and improving laboratory and office building 
facilities, establishing Bureau-wide uniformity in administrative pro- 
cedures, and appraising both program and personnel requirements of 
regulatory and control projects. 
Functions of the former Division of Grasshopper Control were re- 
