Group Title: Lake Alfred AREC Research report
Title: Packinghouse newsletter
Full Citation
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 Material Information
Title: Packinghouse newsletter
Series Title: Lake Alfred AREC Research report
Alternate Title: Citrus packinghouse newsletters
Packing house newsletter
Physical Description: v. : ill. ; 28 cm.
Language: English
Creator: Citrus Experiment Station (Lake Alfred, Fla.)
Citrus Experiment Station (Lake Alfred, Fla.)
Agricultural Research and Education Center (Lake Alfred, Fla.)
Citrus Research and Education Center (Lake Alfred, Fla.)
Indian River Research Education Center
Publisher: Citrus Experiment Station
Place of Publication: Lake Alfred Fla
Lake Alfred Fla
Publication Date: June 1969
Copyright Date: 1965
Frequency: irregular
completely irregular
Subject: Citrus fruits -- Harvesting -- Periodicals -- Florida   ( lcsh )
Citrus fruits -- Packing -- Periodicals -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
periodical   ( marcgt )
Additional Physical Form: Also issued on the World Wide Web.
Dates or Sequential Designation: No.1 (Sept. 1, 1965)-
Issuing Body: Issued by the Citrus Experiment Station (no. 1-38); Lake Alfred (Fla.) Agricultural Research and Education Center (no. 39-136); Lake Alfred (Fla.) Citrus Research and Education Center (no. 137-189); and the Ft. Pierce (Fla.) Indian River Research and Education Center (no. 190- ).
General Note: Title from caption.
General Note: Latest issue consulted: No. 202 (Aug. 1, 2005)
 Record Information
Bibliographic ID: UF00095555
Volume ID: VID00014
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 02430250
lccn - 2006229390

Full Text
SNewsletter No. 23

Citrus Station Mimeo Report CES 69-33
June 17, 1969
650-WG-Lake Alfred, Florida, 33850




Harvesting and Handling Section
University of Florida
Citrus Experiment Station
P.O. Box 1088
Lake Alfred, Florida, 33850
(Complimentary to members of the Florida Fresh Citrus Shippers Association.
Others wishing to receive this newsletter, 'send a dozen stamped preaddressed
envelopes to the above address.).


Newsletter No. 23 (*-
Citrus Station Mimeo Report CES 69-33
June 17, 1969
650-WG-Lake Alfred, Florida, 33850

Harvesting and Handling Section


Thiabendazole Residue Tolerance Approved.

Word has been received that thiabendazole (TBZ or Mertect 260) residue on
citrus fruit has been approved by Canada, West Germany, Denmark, Sweden,and
Australia. As soon as other citrus-importing countries act to establish a tol-
erance for this fungicide you will be notified by newsletter. Apparently the
tolerances established by these countries is 2 parts per million in or on citrus
fruit (as established by the U.S. Food and Drug Administration) with the except-
ion of Australia which permits 10 parts per million. Notification of the Cana-
dian approval will appear in the Canadian Gazette (Canadian equivalent of the
Federal Register) by the middle of July.


Thiabendazole, commonly referred to as TBZ, will be marketed under the
registered trade name of Mertect 260 for use as a postharvest citrus fungicide.
If it is properly applied, decay control is superior to Dowicide A or diphenyl.
For the best control,this fungicide must completely cover the surface of the
fruit. Plugs, scratches, thorn punctures,and particularly the area under the
button of the fruit must be wet with thiabendazole solution.

Method of Application.--A flood application seems to be the most effective
method of application. Experimental work on foam, spray,and wax applications
have not progressed far enough that they can be recommended.

Where to Apply in the Packing Line.--Mertect 260 must be applied after
the fruit is washed and before drying. Do not rinse the fruit after application
of the fungicide. Fruit to be treated can be damp, but not wet. After Mertect
has been applied, excess solution should be removed with water eliminators before
the fruit enters the dryer or water wax is applied.

Time of Treatment.--Treating time must be long enough to completely wet the
fruit. This can be a quick flood if the volume of fungicide pumped over the fruit
is sufficient. An exception is mature 'Temples' late in the marketing season. At
this time,decay control will be better if the fruit are wet with Mertect solution
for about 2-minutes. Shippers heavy to'Temples'might want to take this into con-
sideration when installing a Mertect applicator.

Strength of Treating Solution.--The recommended concentration is about 500
parts per million. A treating range of 250 to 1,000 parts per million has been
effective in experimental work.

Determining the Strength of the Treating Solution.--A test kit to determine
the strength of Mertect 260 in the packinghouse is being developed by Merck Chem-
ical Division of Merck & Co. This is the company that manufactures Mertect.

No. 23

Labeling Containers.--Thiabendazole is the chemical name of this fungicide
and must appear on each carton or Bruce box. A suggested label would read:
"Thiabendazole used as a fungicide".

General.--This fungicide is non-toxic to humans and warm-blooded animals.
It has very little odor. No peel injury has been observed on any variety of
citrus fruit on which it has been tested at concentrations as high as 10,000
parts per million.

As more information is available on the use of Mertect 260,it will be sent
to you by newsletter.

Andrew A. McCornack
Florida Citrus Commission


Available from the Harvesting and Handling Section, C.E.S.

"Thiabendazole, an Experimental Fungicide for Fresh Citrus Fruit", 1967.
A.A. McCornack and G. Eldon Brown. Proc. Fla. State Hort. Soc. 80: 232-237.

"Factors affecting decay control of Dowicide A-hexamine treated citrus fruit",
1968. A.A. McCornack and F.W. Hayward. Proc. Fla. State Hort. Soc. 81: 290-

"Experimental Forced-Air Precooling of Florida Citrus Fruit", 1969.
J. Soule, G.E. Yost, and A.H. Bennett. USDA Marketing Research Report No. 845,
May 1969.

Available from USDA, TFRD, ARS Federal Center Bldg., Hyattsville. Md., 20781.

"Effects of Vent Holes on Strength of Fiberboard Boxes and Fruit Cooling Rate",
1969. Glen O. Patchen, TFRD, ARS, USDA, ARS 52-34, March 1969. (We have a few
available copies).

Available from U.S. Forest Products Laboratory, Madison, Wisconsin.

"Effects of vertical dynamic loading on corrugated fiberboard containers", 1968.
W.D. Godshall. U.S. FS res. paper FPL 94.

Available from the Harvesting and Handling Section, C.E.S.

"Simulated In-transit Fumigation with 2-Aminobutane for Decay Control of Citrus
in Consumer Packages", 1968. W. Grierson and Frank G. Martin. Proc. Fla. State
Hort. Soc. 81: 278-285.

"Effect of Mechanical Harvesting on Suitability of Oranges and Grapefruit for
Packinghouse and Cannery Use", 1968. W. Grierson. Proc. Fla. State Hort. Soc.
81: 53-61.

No. 23 -3-

"A Rapid Method for the Preparation of Citrus Fruit Mitochondria", 1968.
B.S. Buslig and J.A. Attaway. Proc. Fla. State Hort. Soc. 81: 239-242.

"Conversion of linalool to a-terpineol in citrus", 1968. J.A. Attaway and
B.S. Buslig. Biochim. Biophys. Acta, 164: 609-610.

"Screening of Compounds for Reduction of Acidity in Citrus Fruit", 1968.
J.A. Attaway and B.S. Buslig. Proc. Fla. State Hort. Soc. 81: 1-6.

"The Origin of Citrus Flavor Components IV. The Terpenes of 'Valencia'
Orange Leaf, Peel, and Blossom Oils", 1968. J.A. Attaway, A.P. Pieringer
and B.S. Buslig. Phytochem. 7: 1695-1698.

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