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 UNITED STATES DEPARTiaiT OE AGFICTJITIBE / 
 
 Bureau of Entomology and Plant Quarantine 
 7/Qshington, D. C. 
 
 B.E.P.Q.— 365 STATE Fi-i^iNT BOAF 
 
 NOTICE TO PERMITTEES AITD OT?IEPS INTERESTED 
 
 WILLOW 7ITI-2i:S AS PLAIIT TIIS PROPilBITED ON PL.^ITTS FOR ENTRY 
 
 FROM EUI^OPS AND CANADA 
 
 (Approved Aug. 14, 1934; effective Oct. 1, 1934) 
 
 r/illow -j^itlies taken from plants infected with the destructive 
 watermark disease may readily disseminate that malady, since the bac- 
 terial organism concerned ( Bacterium salicis Day and Pseudomonas 
 saliciperda Lindeijer) may be carried within the tissues. The water- 
 mark disease thus far has been reported only from England and the Nether- 
 lands 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 occount 
 of uncertainty as to the distribution of this disease and freedom of 
 movement of the host material, the entry of willow v/ithes from Europe 
 may readily bring the watermark disease to this country. As a precau- 
 tion against the introduction of this disease, S alix propagating stock 
 from Europe has been restricted for so:ae tiiiie to horticultural neces- 
 sities; permittees and others in interest are now notified that as a 
 further precaution willov; rithes used as ties or otherwise in connec- 
 tion v/ith shipm.ents of plant materials for propagation, from Eui-ope , 
 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 eniry of willO'-v withes from 
 Europe, shipments of plants fromi Canada, after October 1, 1934, must also 
 be free from v;illov; withes. 
 
 Accordingly, attention is directed to regulation 7 of Nursery 
 Stock, Plant, and Seed Quarantine ITo. 37 which requires that "All pack- 
 ing materials emplo^/ed in connection with importations of nursery- stock 
 and other plants and seeds are subject to approval as to such use." The 
 use of willov^ withes in any mianner as packing m.aterial for such plant ma- 
 terial is disapproved. On and after October 1, 1934, all plant material 
 for propagation from Europe and Canada must be free from willow withes or 
 it will be refused entry until such withes are removed. Shipments v/ith 
 such material present may be held in customs custody for a period not ex- 
 ceeding 40 days, d^jring which period the permittee or his agent, after 
 making satisfactory arrangements, m*ay remove and dispose of the withes 
 under the supervision of, and in a manner satisfactory to, an inspector 
 of the Department of Agriculture, after v/hich the shipment m*ay be handled 
 in the usual way. 
 
 LEE k. STRONG, 
 
 Chief of Bureau. 
 
UNIVERSITY OF FLORIDA 
 
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