1941] 
SERVICE AND REGULATORY ANNOUNCEMENTS 
75 
ANNOUNCEMENTS RELATING TO WHITE -FRINGED BEETLE QUAR- 
ANTINE (NO. 72) 
B. E. P. Q. 496, Revised. 
SUGGESTION'S FOR CONSTRUCTION OF PLUNGING AND GROWING BEDS AND THEIR 
MAINTENANCE UNDER BEETLE-FREE CONDITIONS IN ACCORDANCE WITH REGU- 
LATION'S OF THE WHITE-FRINGED BEETLE QUARANTINE 
August 25, 1941. 
Nursery stock with soil attached is eligible for certification for movement 
from areas under quarantine on account of the white-fringed beetle, provided 
it has been grown and maintained under beetle-free conditions, or has been 
otherwise treated, as specified in paragraph (b) of regulation 5 of Quarantine 1 
No. 72. 
The Bureau of Entomology and Plant Quarantine and cooperating State of- 
ficials are attempting to reduce beetle populations as drastically as possible in 
all infested areas by the application of intensive control measures in the vicinity 
of nurseries and other establishments dealing in regulated products. However, 
unless or until eradication is accomplished, such suppressive measures within 
themselves do not and cannot adequately protect nurseries or other establish- 
ments within a generally infested area from being exposed to infestation, and 
additional action on the part of the nurserymen is necessary. 
In order to establish and maintain an infestation-free status in nurseries or 
units of nurseries located within a generally infested area, approved beetle- 
proof barriers must be constructed by the nurserymen to protect plunging beds 
and growing areas, and adequate sanitary and protective measures must be 
taken to maintain such barriers in an effective status. Barriers must be sup- 
plemented by precautionary measures against the artificial introduction of 
beetles into such protected areas and iusecticidal treatments as specified by 
authorized inspectors should be applied. 
B. E. P. Q. 496. issued April 28, 1939, provided information on the construc- 
tion of barriers approved at that time. Subsequent research indicates that 
barriers of a less expensive construction will furnish adequate protection. 
The following types of units and barriers are therefore suggested as a means 
of providing protection against natural infestation by the white-fringed beetle. 
RAISED PLUNGING OR GROWING BEDS 
Beds or benches, indoors or outside, must be used, which are at least 12, 
preferably IS inches, above the ground, the legs or supports of which are pro- 
tected by approved oil or other barriers, and which are maintained in a manner 
satisfactory to an authorized inspector. * * * 
GROWING BEDS INCLUDING ENTIRE NURSERIES OR PORTIONS THEREOF 
Heeling-in or growing areas should be enclosed within approved barriers. 
• * * The areas contained therein must, at the time of erection of barrier, be 
known to be free of infestation or must be treated in approved manner under 
the supervision of an inspector. 
No plants with soil, and no soil or other materials restricted by the regula- 
tions of the white-fringed beetle quarantine which have not been produced 
under approved sanitation conditions or which have not been given approved 
treatment, may subsequently be placed in such protected areas. 
P. N. Annand. 
Chief. 
B. E. P. Q. 503, Third Revision, Effective September 11, 1941 
Superseding Circulars 
B. E. P. Q. 486 and 489. 
TITLE 7— AGRICULTURE 
Chapter III — Bureau of Entomology and Plant Quarantine 
PART 301 DOMESTIC QUAKAN 1 TNE NOTICES 
WHITE-FRINGED BEETLE ADMINISTRATIVE INSTRUCTIONS MODIFIED 
INTRODUCTORY NOTE 
Instructions as to various methods <>f treatment of plants in pots, or in soil 
balls, and of potting soil, as previously authorized in Circulars B. E. P. Q. 
