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: March 1974
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: VID00049
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

Newsletter #61
Newsle r Lake Alfred AREC Research Report CS74-i
1000 copies
March 5, 1974

Editor: W. F. Wardowski
Harvesting and Handling Section
University of Florida
j I' Agricultural Research and Education Center
T P. O. Box 1088
Lake Alfred, Florida 33850




*Anyone wishing to receive this newsletter -, 4k r'.,
may send a dozen stamped, preaddressed c ~
envelopes to the above address. / Zo

rd Index
ling Injury, Export, Fresh Fruit Shipments, Bagging Machines,

Newsletter #61 Lake Alfred AREC Research Report CS74-
1000 copies
March 5, 1974

Harvesting and Handling Section



Both commercial experience and laboratory experiments with various types of citrus
have long indicated that there is a tendency for decay to increase with increasing matu-
rity. It has usually been considered that the opposite condition prevails with regard
to grapefruit's susceptibility to chilling injury. Very early pickings are so suscepti-
ble that temperatures under 60 F (16 C) may cause peel injury. As the season advances
lower temperatures become safe down to 50 F (10 C).

However, in simulated shipping experiments which include temperatures in the chillin
injury range, usually 400F (4.5 C1 some unexpected results have been noted very late in
the season. Last year a treatment which decreased chilling injury in early and mid-seaso
harvests caused severe peel injury in our late picking. Going back over previous seasons
work, we note that peel injury problems tended to occur when very late pickings were

The U.S.D.A., A.R.S. group at Orlando are also working on chilling injury, and Paul
Davis tells us that they also have had similar cases of unexpectedly high amounts of
chilling injury in very late pickings. We can find occasional evidence of such behavior
in published papers up to 40 years ago.

It will take a great deal of experimental work to determine just what is involved.
However, it does seem possible that this increased susceptibility to chilling injury may
very well be connected with the post-bloom period. This year we have an abnormally
early bloom and so it is possible that this chilling injury susceptible condition of grap
fruit may occur earlier than usual.

The only recommendation that we can make at this time is to be very careful indeed
that shipping temperatures in any part of a shipment do not go below 50 F for any
late grapefruit exports (beginning now).

Shippers and buyers alike are reminded that our success in arriving at a better
recommendation will be greatly accelerated by accurate and prompt reports from the market
place. If grapefruit arrive with ugly, dark, sunken peel injuries please let us know,
supplying all details of shipping conditions, brand name, transit temperatures, etc.
Kodachrome pictures of the damaged fruit are particularly helpful. See available public
tions list for "Market Diseases & Blemishes of Florida Citrus Fruits" which includes a
color photo of grapefruit chilling injury.
W. Grierson, AREC, Lake Alfred
W. F. Wardowski, Extension Service

On Wednesday, March 6, 1974, 10:00 a.m. a joint Florida Fruit and Vegetable Associa-
tion Indian River Citrus League Labor Seminar, Vero Beach Women's Club, Vero Beach.
Topics of the seminar will include: Wage & Hour Law, "Right to Work", Pending Legislatio
and Unemployment Compensation.

Newsletter #61



Any clear cut understanding of the changes in volumes of fresh citrus shipped are
habitually confused by the illogical custom of dumping Temples in with oranges (instead
of with the other specialty fruit where they belong) and by occasional name changes such
as from "Murcott Honey Orange" to "Honey Tangerine." The above graph shows fresh fruit
shipments in 4/5 bushel cartons since 1961-62, taken from the Annual Reports of the
Division of Fruit and Vegetable Inspection, but grouped as grapefruit, round oranges and
specialty fruits. The latter group includes Temples, tangerines of all types and tangelos.

Several trends are apparent, such as:

1. Total fresh fruit shipments have increased steadily since 1968-'69.
2. Grapefruit and specialty fruits together constitute an increasing majority of fresh
fruit shipments.
3. Although fresh fruit shipments of round oranges were down to approximately 7% of the
total crop last season, total fresh fruit shipments of round oranges were, surpris-
ingly, the highest since 1967-68

W. Grierson
AREC, Lake Alfred

This public document was promulgated at an annual cost
of $201.60, or two and one-half cents per copy to inform
county agricultural directors, ranchers, and growers of
research results in harvesting and fresh fruit handling
and marketing.


March 5, 1974

Newsletter #61


A sleeve-type bagging machine using "rope stock" is now in our packinghouse for
tests and demonstrations. It is the Makfil Systems (International Staple) count and
weigh model which was recently demonstrated at the United Fresh Fruit & Vegetable
Association meeting in New Orleans. The machine is presently equipped with Vexar
net rope stock and is to be demonstrated to the Florida Fresh Citrus Shippers Associa-
tion, at their April 10, 1974 meeting (the business portion of this meeting is limited
to FFCSA members).

Any Florida citrus packer interested in trying out this bagger should contact
Dr. Bill Grierson or Dr. Will Wardowski, Agricultural Research & Education Center,
P. O. Box 1088, Lake Alfred, Florida 33850 (Phone 813- 956-1151), for an appoint-
ment to use the equipment. You should be aware that a full day needs to be set
aside for this trial and that three of your people should probably be present.
Your mechanic and/or foreman could help to evaluate the system as you pack fruit.

W. Wardowski
Extension Service


Available from F. Wardowski, AREC, P. 0. Box 1088, Lake Alfred, Florida 33850.

"Market diseases and blemishes of Florida citrus fruits" by A. A. McCornack, G. E.
Brown. Fla. Dept. of Citrus. 1973.

Available from Supt. of Documents, U.S.Govt. Printing Office, Washington, DC 20402

'"The nature and extent of retail and consumer losses in apples, oranges, lettuce,
peaches, strawberries, and potatoes marketed in greater New York". MRR 996.
July 1973. Price: 40..

"What About Metric", 0303-01191, is an explanation of the metric system and what
will be involved in changing the United States to metric measures. Price:80J

Available from Metric Information Office, National Bureau of Standards, Washington,DC

"Toward a Metric America", NBS LP 67, is a bibliography of available literature on the
metric system.

Available from Volcani Institute of Agricultural Research, Rehovot, Israel

"Research Summaries 1971-1973, Division of Fruit and Vegetable Storage". An excellent
117 page book of abstract-like summaries .for fruit, vegetable and flower postharvest
research and list of publications by their staff members.

Available from U.S. Horticultural Research Center, USDA, 2120 Camden Rd., Orlando, FL
"Compatibility of Fruits and Vegetables during Transport in Mixed Loads" ARS 51-48.
Sept. 1972.


March 5, 1974

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