1934] 
SERVICE AND REGULATORY ANNOUNCEMENTS 
71 
ANNOUNCEMENT RELATING TO MEXICAN FRUIT FLY 
QUARANTINE (NO. 64) 
B. E. P. Q.-367 September 21, 1934. 
ADMINISTRATIVE INSTRUCTIONS— SHIPPING SEASON FOR TEXAS CITRUS FRUIT 
TO BEGIN SEPTEMBER 26 
(Issued under regulation 7, section A, Federal Quarantine No. 64, as revised effective 
Sept. 1, 1932) 
(Approved Sept. 21, 1934; effective Sept. 26, 1934) 
The issuance of permits for the shipment of citrus fruit of the 1934 crop 
under the Federal Mexican fruit worm quarantine (Notice of Quarantine 
No. 64) from the counties of Willacy, Cameron, and Hidalgo, in Texas, is 
hereby authorized to begin on September 26, 1934, so far as that quarantine is 
concerned. The host-free period required by the Department of Agriculture 
to be enforced by the State of Texas under regulation 7 will for the year 1934 
close on September 25. 
The Department of Agriculture has evidence that such modification is de- 
sirable from the standpoint of Mexican fruit worm control and does not in- 
volve increase of risk of propagating that insect. All clean-up and other 
requirements concerning the production and distribution of Texas citrus fruit 
remain unchanged. 
Lee A. Strong, 
Chief, Bureau of Entomology and Plant Quarantine. 
ANNOUNCEMENT RELATING TO NURSERY STOCK, PLANT, AND 
SEED QUARANTINE (NO. 37) 
B. E. P. Q.-365 
NOTICE TO PERMITTEES AND OTHERS INTERESTED 
WILLOW WITHES AS PLANT TIES PllOHIBITED ON PLANTS FOR ENTRY FROM EUROPE 
AND CANADA 
(Approved Aug. 14, 1934; effective Oct. 1, 1934) 
Willow withes taken from plants infected with the destructive watermark 
disease may readily disseminate that malady, since the bacterial organism 
concerned (Bacterium salicis Day and Pseudomonas saliciperda Lindeijer) may 
be carried within the tissues. The watermark disease thus far has been 
reported only from England and the Netherlands and, insofar as this Bureau 
has been able to ascertain, there are no restrictions in Europe on the movement 
of such infected material from the two countries concerned. It is obvious, 
therefore, that, on account of uncertainty as to the distribution of this disease 
and freedom of movement of the host material, the entry of willow withes from 
Europe may readily bring the watermark disease to this country. As a precau- 
tion against the introduction of this disease, Salix propagating stock from 
Europe has been restricted for some time to horticultural necessities ; per- 
mittees and others in interest are now notified that as a further precaution 
willow withes used as ties or otherwise in connection with shipments of plant 
materials for propagation, from Europe, including the British Isles and Ireland, 
will not be admitted into the United States on and after October 1, 1934. Since 
European nursery stock is frequently reshipped here from the Dominion of 
Canada and since Canada imposes no restrictions against the entry of willow 
withes from Europe, shipments of plants from Canada, after October 1, 1934, 
must also be free from willow withes. 
Accordingly, attention is directed to regulation 7 of Nursery Stock, Plant, 
and Seed Quarantine No. 37 which requires that "All packing materials em- 
ployed in connection with importations of nursery stock and other plants and 
seeds are subject to approval as to such use." The use of willow withes in any 
manner as packing material for such plant material is disapproved. On and 
after October 1, 1934, all plant material for propagation from Europe and Canada 
