UBRARY 
STATE PLANT BOARD 
REPORT OF THE CHIEF OF THE BUREAU OF PLANT 
QUARANTINE, 1933 
United States Department of Agriculture, 
Bureau of Plant Quarantine, 
Washington, B.C., August 26, 1933. 
Sir: I transmit herewith a report of the work of the Bureau of 
Plant Quarantine for the fiscal year ended June 30, 1933. 
Respectfully, 
Lee A. Strong, Chief of Bureau. 
Hon. Henry A. Wallace, 
Secretary of Agriculture. 
INTRODUCTION 
The revocation of two domestic plant quarantines, progress in the suppression 
of the pink bollworm in the United States, and the inauguration of a vigorous 
attack on a newly discovered gypsy-moth outbreak in Pennsylvania have been 
among the more important developments in plant-quarantine work during the 
fiscal year 1933. 
The regulations that were canceled were those relating to the European corn 
borer and to the phony peach disease. The revocation of the corn-borer quaran- 
tine was made necessary by the lack of available funds for its adequate enforce- 
ment. In the case of the phony peach disease, on the other hand, the discovery 
that the disease occurred extensively in large peach-growing areas in a con- 
siderable number of States made it appear that further work in the direction of 
preventing the spread of this disease could be carried out more satisfactorily 
through the nursery-inspection organizations of the various States rather than 
under the provisions of a Federal quarantine. In the case of both the European 
corn borer and the phony peach disease projects, the Bureau is continuing to aid 
in prevention of spread by cooperating with the States in the inspection and 
certification of susceptible materials. 
The Pennsylvania outbreak of the gypsy moth, which was found in the late 
Bummer of 1932, is the most extensive infestation of this pest that has ever been 
discovered in this country west of the New England States, with the exception 
of the one in New Jersey discovered in July 1920. The State and Federal 
Governments are cooperating in the effort to suppress the outbreak. 
During the year the port inspection service made more than 20,000 interceptions 
of insects and plant diseases in shipments coming from foreign countries, including 
many serious pests of fruit, cotton, rice, beans, potatoes, forest trees, and other 
plants and crops of economic importance. 
The progress of these lines of work, as well as the Bureau's activities in sup- 
pressing or preventing the spread of the Mexican fruit fly, the Japanese beetle, 
the pink bollworm of cotton, the Thurberia weevil, the Parlatoria scale on date 
palms, the brown-tail and satin moths, narcissus pests, the white pine blister 
rust, the black stem rust of grains, and the Woodgate rust, and preventing the 
introduction of foreign insect pests and plant diseases, are presented in detail in 
the following pages. 
DOMESTIC PLANT QUARANTINES 
GYPSY MOTH AND BROWN-TAIL MOTH 
QTPBY M')i !I rOl M> IN ri.\ w, l.\ ANIA 
An infestation of the gypsy motb Poriheiria diaper L.) vraa discovered at Inker- 
mann, near Pittston, Pa., late In July 1932. \ ral or State funds 
were available to carry on clean-up work, but In the emergency the State made 
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