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 B. E. P. Q. 59*S Amended Effective March 13, 1953 
 
 UNITED STATES DEPAKEMEHT OF AGRICULTURE 
 AGRICULTURAL KftSEAHCH AIMINI3TRATI0N 
 BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE 
 DOMESTIC QUARANTINE NOTICES 
 
 AMENDMENT OF ADMINISTRATIVE INSTRUCTIONS AUTHORIZING ETHYLENE 
 
 DIBROMIDE FUMIGATION AS A CONDITION FOR CERTIFICATION OF MANGOES 
 
 UNDER PUERTO RICAN FRUIT AND VEGETAELE QUARANTINE NO. 58 
 
 Pursuant to the authority conferred upon the Chief of the Bureau of Ento- 
 mology and Plant Quarantine "by sc 301,58-2 and 301,58-3 of the regulations 
 supplemental to Puerto Rican Fruit and Vegetable Quarantine No. 53 (7 CFR 
 301.58-2 and 301.58-3), issued under section 8 of the Plant Quarantine Act cf 
 1912, as amended (7 U, S. C. l6l), paragraph (b) (l) of administrative instruc- 
 tions appearing as s 301.58-34 in Title 7, Code of Federal Regulations, effec- 
 tive October 1, 1951, is hereby amended to read aG fellows: 
 
 s 301.58-3d Administrative instructions authorizing tho movement of ican g oes 
 from Puerto Rico after a;.p roved fumigation. 
 
 (t>) Approved treatment , (l) The approved treatment shall consist of 
 fumigation with ethylene di bromide in an atmospheric fumigation vault, which 
 vault and its equipment have been approved for that purpose ty tho Bureau of 
 Entomology and Plant Quarantine, The dosage shall be applied at the following 
 rates : 
 
 6 ounces of ethylene di bromide per 1,000 cubic feet of spaco 
 for 2 hours at 80° F. 
 
 8 ounces of ethylene di bromide per 1,000 cubic foot of space 
 for 2 hours at 7O F. 
 
 Cubic feet ef space shall Include the lead. The 2-hour period of exposure 
 begin when all of the fumigant has been Introduced into the clamber, rhe 
 quired temperatures apply to both air and fruit. Tho ethylene di "brood 
 be applied in tho liquid state and volatilized within the sealed fta ' 
 chamber by direct contact with a highly heated metal surfaco ovor an oleotrio 
 hot plate or other suitable heating medium. The gas shall be circulate 
 til© clamber continuously for the 2-hour period by an electric fan or blow 
 
 (Sec. 8, 37 Stat, 313, amonded, 7 U. S. C. - 
 
 This amendment clall be effective !:>. cL Li, 1J53. 
 
 The purpose ef 1 adment is • the dosage scheiulos auth 
 
 for tho fumigati n of mangoes a3 a w rtifioati m prior to tl 
 
 interstate movement from Puerto Rico. The pres 1 schedule for 
 
 pheric fumigation is pr< :■'. or aho\ 
 
 involves no oosontiJ. ohange in actual fumigation procodur' 1 . Lnc 
 
I II llll II III 
 3 1262 09314 8541 
 
 of 80 F, or above normally prevail during the mango harvesting season in Puerto 
 Rico. The £0° dosage schedule in the amended instructions parallels the 50° 
 schedule in the present instructions , The amended instructions will also bo 
 consistent with the latest experimental data and with the 70° schedule for 
 ethylene di bromide fumigation in Hawaii of certain fruits and vegetables pre- 
 scribed in 7 CFR 301.13-Ub (B. E. P. Q, 592, effective February 18, 1953;~l8 
 F.P. 9^7 ) • Accordingly, it is found for good cause that notice and public pro- 
 cedure under the Administrative Procedure Act are unnecessary and contrary to 
 the public interest, and good cause is found for making the effective date 
 hereof le3o than 30 day3 after its publication in the Federal Register. 
 
 Done at Washington, D, C, this 5th day of March, 1953. 
 [SEAL J 
 
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 , Pu rcau of Enyomology and Plarit/Quarantine 
 
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 i of Enfomology and Pla'nyQuaran