Title: Citrus leaves
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Permanent Link: http://ufdc.ufl.edu/UF00087049/00006
 Material Information
Title: Citrus leaves
Series Title: Citrus leaves
Physical Description: Serial
Creator: Citrus Research and Education Center, Institute of Food and Agricultural Sciences
Publisher: Citrus Research and Education Center
Publication Date: June 1999
 Record Information
Bibliographic ID: UF00087049
Volume ID: VID00006
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.


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UNIVERSITY OF Dr. Harold Bro,,nin, Center Director
Citrus Research & Education CenterTRU
FLO D A 700 Experiment Station Road
1 a IEEEWEE ULake Alfred, FL 33850 LEAVES
Tel. (941)956-1151 LEAVES
Institute of Food and Agricultural Sciences Fax (941) 956-4631

Citrus Research & Education Center Lake Alfred

Volume 17, No. 6 June 1999

Florida Department of Citrus
Scientific Research Department

k Citrus Fruit Factshe<

:cr." ..e ~xt','- : .:- rt .,.I IIi ,', .'t.. 'us It Ia~tS rto cm? 0..crIl c

Lesion: the decay, a well-marked but limited diseased-area

Mycellum 'L,,et Ic ': the mas of interwoven thread-like

Oleocellosis a 1 malge to the rind resulting frm pee
Plugging: the ,t mrs when portions of the rind are t

Pustale: a blist -like spo or spore mass on the s.

Senescence: the, ges which natnully terminate

Sollage: the proc 'ad green or blue mold spores

Spore (also could tuctures of ifun (like seeds

Sporulatlon: the proT ";thich the fngi produce reproducti

Stem-ead: the end of the fruit at the point of anachment to the st

Benlate, An ExerimenSl
For Control Of Postharvest

bllud zu pw t aW Iby i
a thaki tor O Ird dar trmn
ns...an.mhaw -


Best Wishes on Your Retirement, Dr. G. Eldon Brown

At Dr. G. Eldon Brown's retirement luncheon on May 21, Dr Bill
Miller presented Dr. Brown with a large package, wrapped in colorful
paper. "It's not a bunch of rotten fruit, is it?" Dr. Brown asked. The 90
people in the audience laughed. Dr. Brow n spent his 34-year career
with the FDOC studying rotten fruit, or rather, how to prevent fruit rot
and decay. His work has been pivotal to our understanding of the
biology and management of citrus postharvest diseases. Dr. Brown
also worked tirelessly for the citrus industry, traveling to fresh fruit

In this Issue
Dr. Eldon Brown's Retirement Luncheon ........................ pages 1-2
Meet .... ............... .... .............. page 3
Citrus Researchers Receive PEP Awards ........................... page 4
Research Updates at UF Worksho ................................ aee 4

packinghouses throughout ihe state, answering questions and offer-
ing help to scores of people over the telephone and in person.
The package didn't contain a bunch of rotten fruit. It was a beau-
tiful, polished CREC packing crate, a very nice moment. And there
was a digital camera among the gift-, along with a monetary gift.
Over 100 individuals, organizations and companies contributed to the
gi ft For Dr. Brow n's wife, MaryLou, there was a crystal vase and a
pillow with the quotation, "Retirement twice the husband and half
the income!" continued on page 2
continued on page 2

News Around CREC ......... ...... ... .. ................ page 5
BHG Room Reservations ........................ ... ............. .. page 5
Thank you letters from Lake Alfred MIJdlt SLhool .......... page 6
L oo ing for graduate ........ .. ........... ................ page 6
From The Direcior ................ ........... ........ ....... page 7

IS.. t' D u M' S .L

Page 2
continuedfrom page 1
The luncheon, which included speeches and
presentations, was attended by several indus-
try representatives. "It shows how much
Eldon is appreciated by the industry," said Dr.
Mohamed Ismail, FDOC Fresh Fruit Scientific
Research Director, as he acknowledged rep-
resentatives from the FMIC FoodTech, Indian
River Citrus League, Ben Hill Griffin Inc.,
DECCO, Seald-Sweet Growers, Inc.,
Cushman Fruit Co., Inc., Indian River Ex-
change Packers and others. "Eldon has always
been a real mainstay for those of us in the in-
dustry. Whenever we ran into a problem and
when we'd need advice, he was always there.
ready and willing to give it," said David Hall
of Fresh Mark Corp.
Dr. Brown is well-known throughout the
industry. Frank Kelsey of FMC FoodTech re-
called, "When I first came to FMC they
said, 'Have you met Thee Eldon Brown yet?"
"Wow Thee Eldon Brown. This guy is so
respected that they call him Thee Eldon
Brown," Kelsey said. "It wasn't too long af-
ter that I learned it was G. Eldon Brown," he
laughed. On a more serious tone, Kelsey told
the audience. "Everything that he has done...
She [was] dedicated to whatever is best for
the industry. He has remained focused and true
to that." On behalf on FMC FoodTech, he pre-
sented Dr. Brown with a clock.

The program, which was chaired by Jerry
Metcalf of Indian River Exchange Packers,
Inc., included words from colleagues Drs. Bill
Grierson. John -\taway, Will Wardowski and
Bill Miller. Grierson recalled going to the air-
port in 1965 to meet Dr. Brown when he first
came to Florida. He had never met Dr. Brown
before, but he knew he was looking for a tall,
lean man. "I looked at all the people coming
off the plane, and there... was a young man,
six feet tall. about the right weight, and a copy
of Scientific American tucked under his arm."
Dr Grierson went up to the young man and
said, "Dr. Brown?" Dr. Brown looked at him
and in a surprised tone said, "How did you

Several members ofDr. Brown's familI
attended his retirement luncheon. L to R:
Daughter-in-law Christy, granddaughter Taylor
(frorrt). on SIn e Brown, grandson Aaron, Dr.
Eldon Bromn, wife MaryLou.

A slide show presented by Dr. Bill Miller
chronicled Dr. Brown's life from his child-
hood in Missouri to his days as an Air Force
pilot, his college career at the University of
Missouri, his wedding to his wife MaryLou,
his two children, and his enormous contribu-
tions as a researcher, teacher and advisor. He
was involved in cooperative research with the
University of Florida and the USDA. More
recent. Dr. Brown was an instrumental force
in the modernization ofCREC's packingline
Dr. Brown closed the program, as he
recalled ) ears ofmemories, shared humor-
ous anecdotes and acknowledged collabo-
rations with several colleagues. At the end
of the program, the audience arose in a
standing ovation to thank him for his
tremendous contributions as a scientist,
colleague and friend. Fortunately, it is not
a final farewell, for Dr. Brown will teach a
short course in the near future and plans to
keep up with the literature and keep in
touch with the CREC community. Perhaps
Carl Fezter III of Florida Indian River
Groves said it best. "He's always been
there to help, and he's always given me the
right answer. So I want to say to him,
'Thank you very much, and I will miss
you." Best wishes, Dr. Brown.

L to R. Craig DaJ is, Mel Chambers. Dr. Brown and Lowell Schmidt -all worked with Dr Brown; Drs Bill Miller, V
share a few words at the luncheon.

Vardo ski and John Attawa,

Mohamed Ismail. Beverl) Jakels) (L), Ellen Wheeler(standing) and Jane
Wilson greeted guests as they arrived.

L Iun0iilmie rinus JIo iemin aniu ray an D r i lrcuIeI JiuY DwIus.
Elearor Ramage retired) and Dr Ed Moore.

Page 3

Meet ......

Left photo: L to R Dr. Ed Echeverria, Pedro Gonzales-Blanco. long-Hee Lee. and Ken
Marsh. Right photo: Brandon Hockema. Dr. Echeverria's laboratory is on the second
floor of the Packinghouse. Read on to learn more about Dr. Echeverria's research and
the members of his laboratory.

Dr. Ed Echeverria heads a research program in area of carbohy-
drate metabolism in storage tissues. His research interests include the
intracellular transport, accumulation and utilization of sugars and acids
in harvested tissues, and mechanisms of sugar synthesis and accumula-
tion in citrus fruits. A native of San Lorenzo, Puerto Rico, Dr.
Echeverria has a B.S. in Botany from the University of Massachusetts,
Amherst, and M.S. and Ph.D. degrees in botany from the University of
Florida. He also did post-doctoral studies at Penn State University
before coming to CREC 13 years ago. Some of Dr. Echeverria's inter-
ests outside of work include tennis and Spanish literature,

Pedro Gonzales-Blanco is a Senior Biological Scientist who has
worked with Echeverria for 4 1/2 years. In the laboratory, Pedro is
currently working on the isolation and characterization of membrane
proteins involved in the transport of sugars and acids in plants cells..
Some of the biochemical tools and analyses he uses are discontinuous
sucrose gradients. SDS-PAGE, immunodetection methods and radio-
isotope markers. Pedro has a B.S. and MSc. in Chemistry from Mos-
cow State University in Russia, and did graduate studies in Biochemis-
try at the Cuban Research Institute on Sugarcane By-Products in Ha-
vana, where he worked for 10 years. As a visiting scientist, he has
spent time at the University of Mexico, the Institute of Chemistry of
the Slovak Academy of Science and other institutions. Pedro also likes
reading, traveling and movies.

Jong-Hee Lee is a visiting scientist from the Cheju Citrus Research
Institute in South Korea, where he is studying soil and plant nutrition
in citrus. He holds B.S. and M.S. degrees from Kyung Pook Univer-
sity He likes tennis, hiking and photography.

Dr. Ken Marsh is a visiting scientist from HortResearch, Auckland,
New Zealand. He brings to CREC considerable laboratory and field
experience in the area of acid and sugar metabolism in apple and citrus
fruits. He's working with Dr. Ed Echeverria and Pedro Gonzalcs-Blanco
on the citric acid uptake and metabolism in tonoptast vesicles, and con-
ducting studies on enzymes related to vacuole acidification. He re-
ceived his Ph.D. from the University of Wisconsin in Madison. Dr.
Marsh has three sisters and a brother in New Zealand and Australia,
and enjoys such activities as kayaking, biking, walking and traveling.

Brandon Hockema is a graduate student studying with Dr.
Ed Echeverria. He's been taking courses in Gainesville, but is
now at CREC conducting laboratory research on how drought
stress affects fruit "sink" strength in citrus. (A "sink", in plant
physiological terms, is an organ that consumes or stores sugar,
such as a fruit.) Brandon grew up in a farm setting in his
hometown of Yamhill, Oregon. He graduated from Western
Oregon University with a BA in Biolog). Brandon's research
experience includes undergraduate studies on CAM-C, cycling
in the plant, Portulaca. Brandon is interested in plants (all
sizes, shapes and colors), and also enjoys fishing, hiking and

Dr. John Jifon, a native of
Cameroon, is a postdoctoral scientist
working with Dr. Jim Syvertsen. Dr.
Jifon, an environmental plant
physiologist, recently received his
SPh.D. from Cornell University,
where he studied plant responses to
elevated CO,. Dr. Jifon earned a
Bachelor's degree in Ecological
Sciences from Edinborough Univer-
sity in Scotland, where he studied
forestry, and a Master's degree from
Mississippi State University, where he also studied plant re-
sponses to elevated CO,. At C REC. Dr. Jifon is working on a
BARD-supported project investigating how light irradiation
influences water use, fruit quality and yield in citrus.

Dr. Young Mo Koo was featured
in last month's Citrus Leaves.
Here is a reprinting of his photo,
which didn't photocopy very well
in last month's issue. Our
apologies the photo doesn't do
him justice!

The University of Florida (UF) has an-
nounced that Dr L W "Pete" Timmer and Dr
James Graham of the UF Citrus Research and
Education Center (CREC) are 1998-1999
Professorial Excellence Program (PEP) award
recipients. These merit awards recognize
employees for outstanding accomplishments
and productivity since promotion to the rank
of Professor. There were 123 PEP awards
given to UF faculty this year.

Timmer- Plant Pathologist
Timmer heads a research program that has
contributed greatly to our understanding of
some of Florida citrus' worst fungal diseases:
greasy spot, postbloom fruit drop, melanose,
citrus scab and Alteraria brown spot. These
diseases can cause problems such as flower
and fruit drop, leaf defoliation and/or large,
unsightly fruit blemishes, resulting in devas-
tating losses.
To develop management programs for
these diseases. Tunmer studies fungi from sev-
eral different angles. He conducts research
on fungal biology and life cycles, evaluates
fungicides and analyzes genetic differences in
fungal populations from different parts of
Florida and the world. Timmer also studies
how weather conditions promote disease out-
breaks. By using data on temperature, rain-
fall and leaf wetness duration, Timmer has
developed models that predict the amount and
severity of infection. Growers use these mod-
els to make decisions on the timing and num-
ber of fungicide sprays.
Each spring, Timmer provides growers
with timely information on the status and rec-
ommendations for Postbloom Fruit Drop dur-
ing the Valencia and navel orange flowering
season via a toll-free hotline He recently co-
edited a book, "Citrus Health Management,"
with CREC colleague Dr. Larry Duncan,
which covers all aspects of citrus crop man-
agement from citrus cultivation and nursery
trees to maintenance of fruit quality, after har-
Timmer earned a B.S. from Michigan State
University and a Ph.D. from University of
California, Riverside He joined CREC in
1978, where he has mentored graduate stu-
dents, published books, scientific papers and
popular articles, and served as editor for the
Proceedings ofthe International Organization
ofCitrus Virologists and Senior Editor for the

Page 4

Graham Soil Microbiologist
Graham, who has been at CREC since 1981,
heads a research program on soilbome diseases
and organisms. He is well known in the citrus
industry for his work on citrus brown rot, a
fungal disease caused by Phytopthora.
Phytopthora attacks the roots, fruit and other
parts of the tree, causing devastating damage.
Recently. Graham discovered that the cause
of a severe form on brown rot in Florida is a
newly recognized fungal species, Phytopthora
palmivora. This new species is of concern be-
cause it breaks down the resistance of the
widely planted rootstock, Swingle citrumelo.
making thousands of citrus trees in Florida sus-
ceptible to outbreaks of this disease
Graham is helping citrus growers by work-
ing to develop Phytopthora-resistant
rootstocks, evaluating fungicides and testing
the use of composted municipal waste to sup-
press the fungus. Graham also works with en-
tomologists on ways to manage the problem-
atic Phytopthora-Diaprepes root weevil com-
plex, in which the combination of the fungus
infection and root weevil feeding causes severe
damage to citrus roots.
In addition to his work on brown rot, Gra-
ham also works with USDA researcher Dr.
Timothy Gottwald on citrus canker. They are
studying the effects of weather patterns on dis-
ease spread, analyzing the survival of bacteria
on plants and equipment to assess the possibil-
ity of future outbreaks, and working on im-
provements in disease detection methods.
Another aspect of Graham's research pro-
gram involves mycorrhizal fungi. These fungi
are associated with roots and aid in the absorp-
tion of certain plant nutrients, particularly phos-
phorus. Although mycorrhizal fungi are gen-
erally considered beneficial in natural ecosys-
tems, Graham is studying how these fungi may
actually negatively affect citrus tree growth in
fertilized soils where abundant phosphorus is
Graham, who has a B.S. from University of
California, Irvine and a Ph.D. from Oregon
State University, has mentored graduate stu-
dents, written numerous articles and scientific
papers and is active in teaching and Extension
activities at CREC.

Note: The above article was issued as a
CREC News Release on May 24, 1999.

CREC Researchers Receive
University of Florida Merit Awards
Timmer and Graham Receive PEP Awards

Research Updates in
Citrus, Other Projects at
UF Workshop
Salt-tolerant and disease resistant plants,
and the inner secrets of gene regulation
were some of the topics at the UF Plant
Molecular and Cellular Biology (PMCB)
Workshop was held in Crystal River on May
7-8, 1999.
The PMCB program holds an annual
workshop to give researchers, post-docs
and students the opportunity to talk about
their latest research progress and to learn
about other programs.
Below is a summary of the citrus
presentations, as well as news about other
research programs at the Gainesville

Citrus Transformation Putting New
Genes into a Citrus Tree
Genetic engineering ofplants involves
the transfer of a new, desirable gene(s) into
a plant, with the goal that the new gene(s)
will confer a desirable trait, such as disease
resistance. But how do you transfer a new
gene into citrus?
Dr. Oscar Olivares-Fuster, a post-
doctoral researcher working with Drs. Jude
Grosser and Geraldine Fleming, dis-
cussed the transfer of a marker gene into
citrus protoplasts by disrupting the mem-
branes with polyethylene glycol. The
marker gene, which was originally isolated
from jellyfish, produces a green fluorescent
protein. It is thus easy to visually identify
and evaluate the effectiveness and success
of gene transfer by looking for cultures that
'glow" bright green.

Loosening Oranges from the Tree
Dr. Dennis Lewandowski presented an
overview of the abscission project. Drs.
Jackie Burns, Igor Kostenyuk.
Covadonga Arias, Tony Trieu, Tina Le
and Lyudmyla Tretyak also attended the
As Dr. Lewandowski explained, me-
chanical harvesting machines for citrus are a
pressing need as growers cope with labor
shortages. One challenge has been that
oranges are notoriously difficult to pull off
the tree. He described their efforts at
looking for an abscission agent that will
help loosen the fruit, making oranges easier
to harvest. Currently, the abscission team is
studying tree responses to a compound
continued on Page 5

Page 5

UF Workshop. continuedfrom page 4
called "Release," which loosens only mature
fruit on the tree. They are examining
changes in RNA and protein levels that are
associated with mature fruit abscission.

Making Grapefruit Less Bitter and
Looking for Citrus Genes
Fatma Kaplan, a student with Dr.
Gloria Moore in Gainesville, is conducting
studies on the synthesis of naringen, a
compound that contributes to the bitter taste
of grapefruit.
Antoinette Sakar, another student
working with Dr. Moore, is working on a
genetic map for citrus using Inter-Simple
Sequence Repeat markers. Genetic maps are
used by geneticists and breeders to find
genetic markers, including genes, that help
confer desirable traits.

Best Graduate Student Presentation -
Ricardo Harakava: Disease-Resistant
An award for Best Graduate Student
Presentation was given to Ricardo
Harakava, who is working with Drs. Dean
Gabriel, Chuck Niblett and Richard Lee.
Ricardo is working to develop plants that are
resistant to the disease, Citrus Variegated
Chlorosis (CVC).
CVC, which is caused by the bacterium,
Xylellafasrtiosa, is a severe problem in
Brazil and other countries.
Using tobacco as a model system,
Harakava is trying to express antibacterial
peptides in the xylem, where the bacteria
typically reside.
Harakava will receive a $500 travel
compensation from the UF Plant Molecular
and Cellular Biology Program, to be used
towards travel to a scientific meeting.

News In the Horticultural Sciences
Department in Gainesville
Students and post-does working with Dr.
Andrew Hanson are studying the synthesis
of osmoprotectants that help confer salt
tolerance. Their ultimate goal is to geneti-
cally engineer salt-tolerant crops. ........
Dn. Coralie Lashbrook and Harry Klee
are undertaking molecular studies on how
ethylene is involved in the abscission of
drought-stressed cotton leaves and buds ....
Dr. Curt Hannah's laboratory is studying
how certain DNA sequences, including some
specific to certain introns, can disrupt gene
expression; his laboratory is also studying the
regulation of a key enzyme in starch

synthesis One of their goals is to make
developing corn less susceptible to heat
stress by improving the heat stability of this
enzyme ...... Members of Dr. Rob
Fed's laboratory are studying the regula-
tion of a key enzyme in anaerobic respira-
tion, alcohol dehydrogenase (ADH). Dr.
Ferl will have a plant experiment aboard an
upcoming space shuttle flight, STS-93,
tentatively set for a July launch. They will
examine plant respiration and ADH
activity/regulation in plants exposed to


From Personnel

Time cards/records due:
Monday, June 7
Monday, June 21

From The Mail Room

Recycle Day is June 6.

Welcome to ....
Michael Durrence OPS Nielsen
Marsha Obraztsova OPS Burns
Janina Allende OPS Nielsen
Mohamed El-Deeb Visitor Grosser
Ajia M Paolillo OPS Parsons
Jennifer Parsons OPS Timmer
Shannon H Sloan OPS Bergh
Lyudmyla Tretyak OPS Bums
Graeme Lindbeck OPS Brlansky
Jing-fing Yang OPS Rouseff
Trevor Fike OPS Dawson

Farewell to....
Michelle Sprosty Secretary Ismail
Joao Renato Silva Visiting student Singh
Jose Lima OPS Briansky
Toni Ceccardi Post-doc Derrick
Sympathy to... Nancy Burke, for the loss of
her fiance, Peter Marcoe. ... Rick Ramos, for
the loss of his father .... Ellen Wheeler, for
the loss of her mother ... .the family of Perry
Cooper.. .the family of Donald Petrus
Get well wishes to Wayne Hillsgrove, CREC
computer technician He is recuperating at
Royal Oaks Nursing Center following a
stroke. Cards can be sent to Wayne at:
Royal Oaks Nursing Center Rm 219
37300 Royal Oak Lane
Dade City, FL 33525

BHG Room
Reservations -
The Need To
Plan Ahead

You may have noticed that BHG is busier
than ever. With an increasing number of
events and meetings at CREC. advance plan-
ning is crucial. We need your help in giving
us advance notice when you need audio/vi-
sual (A/V) equipment or request custodial
services (table-chair arrangements. coffee and
OJ, refreshments, lunch, etc.).
We often have concurrent events, each
with different A/V setups and custodial needs
It's not uncommon to have three or four meet-
ings in a day. It can get pretty crazy
You may think a slide or overhead projec-
tor is a simple request, but when there are
three or four other events occurring at the
same time, it becomes a juggling act to coor-
dinate equipment and manpower! And we
don't want to disrupt ongoing meetings to
retrieve AV equipment or move tables and
chairs to accommodate last-minute requests.
To ensure that everything runs smoothly.
Public Relations and Customer Service is
working to coordinate events with AV and
custodial personnel. Please help us out by
informing the Switchboard of your A/V and
custodial needs when you make a room res-
ervation. If the event involves outside speak-
ers, we can make contact with the appropri-
ate people to find out their needs ahead of
time, too -just let us know

Manuscripts submitted to the
Publications Committee
in May:
Bill Castle. Promising New Selections
of Sweet Orange Cultivars. Citrus
Ed Echeverria and Pedro C.
Gonzalez. ATP-Induced Sucrose Efflux
from Red Beet Tonoplast Vesicles.
Clayton W. McCoy, David I. Shapiro,
and Larry W. Duncan. Application
and Evaluation of Entomopathogens for
Citrus Pest Control. Manual of
Techniques in Insect Pathology: Field
W. Wardowski (Editor). Packing-
house Newsletter No. 186.


Page 6

We received dozens of thank-you letters
from Lake Alfred Middle School 7th-
graders after their visit to CREC in April.
The students were impressed by the size
and scope of CREC's programs, and were
surprised to learn that CREC is so close to
their school (Lake Alfred Middle School is
located on the comer of Evenhouse Rd.
and S.R. 557). Here's a sampling of their
cards and letters.

Dear Dr. Duncan and Dr. Timmer,
- This is a note from me to you
- Telling you I appreciate everything you do
- You taught many things to the class
and me
-To help protect the citrus plants
- You really helped me see
- I am really thankful for all that you have
- You showed us many things while having
- Nematodes and fungi is what we learned
that day
- Just to really thank you, is what I want
to say.
Christina English

Dear Dr. Timmer and Dr. Duncan,
.... [We] loved learning about nema-
todes with Dr. Duncan. [We] loved the
way nematodes looked under the micro-
scope. [We] also loved studying Dr.
Timmer's lab. We also found Dr. Timmer's
lab exciting and interesting as well, We
love to learn about greasy spots. [We]
never knew you could take a bud out of a
tree and then put It in another. [We] love
to thank you again for letting us come
visit your lab, and for the outstanding
lesson we learned about nematodes and
greasy spots.
Love, Melinda Baker

.... I thank Dr. Parsons for teaching me
about irrigation. He taught me that If
you put water on the trees it will keep
them at 32 F on a cold night. Also, he
taught me that if a tree freezes it will die.
Last, I would like to thank you for taking
the time to teach me.
Next, I would like to thank you, Dr.
Diana [Drouillard], for all the things you
taught me. I would like to thank you, Dr.
Diana, for teaching me about fungus. You
taught me that there are good fungus
and bad fungus. Also, you taught me
that the good fungus can help a tree
grow. Last, I would like to thank Dr.
Lewandowski for being my tour guide. You
were very nice to me.
Sincerely, Rashad James

Thank you, Dr. Rouseff, for educating us
on the taste and color of citrus. It was
really interesting. But, that arm sniffer
was really nasty. It was fascinating how
the brain reacts to taste and color.
Dr. Chandran, your lab was neat. You
must get really hot working in the hot
house. We liked learning about all the
different types of weeds.
Dr. Alva, thank you for taking us
through the soil and water analysis lab.
We thought the plasma machine was
really cool We think that it was neat how
you broke down the soil with acid.
Thank you,
Jessica Johnson and Nate Depuy

Dear Dr. Parsons,
We had a great time in your Irrigation
lab. The coolest part was when you used
the Infrared heat gun on people's heads.
We also thought it was neat how you
taught us about the microsprinklers. It's
amazing that you could freeze something
to keep it from freezing, because In a way
that's what you're doing when you use the
We both really appreciate your kind-
ness and patience.
Thanks again,
Laura Noel and Erica Cordero

Dear Dr. Lewandowski,
We are writing to say thank-you. You
took time out of yourjob to show us
around. We think you have a lot of
patience to take on so many teenagers at
one time. It takes a lot of courage, also.
.... We really appreciated your coopera-
tion with us.
Thank you, Nikki Williams

Dear Dr. Fares,
Thank you for allowing us to visit your
lab. We learned many new things about
how water and acid are measured In
leaves. And by the way. "HI Dad!"
We liked the I.C.RE.A.S. machine because
it was cool the way the needle moved. We
also noticed that you used the periodic
table a lot. We hope we can get another
chance to visit your lab again sometime.
Sincerely, Emna [Fares] & Sheena Orta

Dear Dr. Duncan,
I had fun at the citrus lab. It was
great. The little bugs that were crawling
on the grubs looked like worms. The
adult nematodes looked like a beetle and
an ant mixed together. The orange juice
was very good. I wish I could have had
more of that orange Juice, You all take
very good care of the oranges and
orange trees ....
Sincerely, Your friend, Daniel White

Citrus Leaves: Editor, Monica Lewandowski,
PublicRelations; Production and Disiribution:
Word Processing. Barbara Thompson, Super-
visor; Customer Service: Kathy Withcrington,
Supen isor, Nancy Burke.
We welcome your contributions send to
Monica Lewandowski, Ext. 233 or
mmlew,''lal.ufl edu

If you or a member of your family recently
graduated, we'll include their names in a
future issue of Citrus Leaves. Send name,
school and major (for college graduates) to
Monica Lewandowski at mmle r(i'lal ufl.edu
or leave a note in her mailbox.

Page 7


Spring Picnic
Many thanks to all who participated in the CREC Spring Picnic at Lion's Park.
Those brave individuals who faced the wind and rain in the afternoon were rewarded
with a lovely, cool evening, some great food and good companionship. Many thanks to
the Entomology/Nematology and Extension groups for organizing the fun and food.
Also, thanks to Joe Knapp, Steve Futch and others who assisted financially with the
event. And finally to all of you who assisted in many ways to make this a successful
afternoon. Let's do it again'

Purchase Cards
The purchase card system has now been in place for some time and many users are
expressing their satisfaction with the results in terms of purchasing privilege and sim-
plicity. Not all of the bugs have been worked out, as with any new system, but things are
progressing well. Please remember, for this system to work, we need to submit the card
receipt immediately so that the accounts can be reconciled within 24 hours. Failure to
do this is increasing, leading to problems in clearing the accounts. Please return the
purchase card receipts on the day in which the purchase occurs, and we will be able to
keep the system going. Thanks to Candy and Mary for making this system work!

7122 Fire Drill Report
A report on the May Fire drill in Building 7122 (Packinghouse/Processing Plant) indi-
cates that the response by CREC and the emergency services was great! Upon sounding
the alarm, 911 was alerted and the fire department was on site in 3 minutes. Emergency
Medical Response was here simultaneously. Personnel were evacuated in 2 minutes, and
only one person needed to be prompted by phone to evacuate, all within 3 minutes.
Firemen with full scuba gear cleared the first floor in less than 5 minutes, checking and
tagging every space. The second floor took longer (more doors and spaces) but the
whole building had been verified by the fire department within 16 minutes of the 911
call. This activity is an important training and response exercise for the emergency
repsonse teams as well as our community. We will schedule additional drills through
time and appreciate your participation and attention. This is for your safety!

Lab and Pesticide Waste
Finally, Environmental Health and Safety from UF./FAS has been working with us to
reduce and eliminate the backlog of laboratory and pesticidal waste that has accrued at
CREC. Several pick-ups have occurred in recent months. During July, the team from
Gainesville EH&S will be here to complete the backlog of both lab and pesticidal
wastes. Please do your part by arranging to move your waste materials to the appropriate
facilities Contact Debbie Van Clief(Ext. 200) for laboratory waste and Joe Knapp (Ext.
278) for pesticide wastes. Moving them from your lab or storage area will assist in their
packing and disposal.

Harold Browning

Tuesday Wednesday




June 1999


Student Tour

Student Tour


6 7 8 9 10 11 12
Southern Harvest iFAS
Extension & CPR Class ing Labor Promotion &
Research Management Tenure
group tour Comm. Workshop

13 14 15 16 17 18 19
Faculty Statisti
CED Mtg / cs
District IV Supervisor's Seminar Dr.
Mtg. R. Littell

20 21 22 23 24 25 26
Water Qual./


Staff Mtg.1
Multi County
Citrus Extension
Agent Interviews
& Seminar



2- Mike Armstrong Network Computing at
CREC. BHG Rm. 1, 11:00 am-Noon,
5- Holiday (4th of July).
9- Stats Seminar, R. Litlell BHG Rm.1, 10-Noon.


___~ ___



June 1999
1&2 Brazilian Student Tour Steve
Futch. BHG Teaching Lab., 8 am -
4:30 pm.
4 Network Computing at CREC -
Mike Armstrong. BHG Rm 1, 11
am Noon.
7 Southern Extension & Research
Activities- Tour, BHG, Rm 4, 1 5
9 CPR Class Bill Clayton BHG Rm
4, 8 am 5 pm.
10 Harvesting Labor Management
Comm Galen Brown. BHG Conf.
Rm., 1 4 pm.
11 IFAS Promotion & Tenure
Workshop Rod Clouser. BHG
Conf. Rm.& Rm.4., 9 am -4 pm.
15 CED District IV Dr. Norman. BHG
Conf. Rm, & Teaching Lab., 8:30
am 3:30 pm.
17 Faculty Mtg. Dr. Browning. BHG
Rm. 4, 8:30 10 am.
17 Supervisors' Meeting -
Dr. Browning. BHG Conf. Rm.,
3:30 5:00 pm.
18 Seminar: Design & Analysis of
Split-plot Experiments Dr. Ramon
Littell. BHG Rm. 4, 10 am Noon,
23 Ridge Water Quality Dr. Wheaton.
BHG Rm. 4, 9 am 2 pm.
23 Citrus Greening Workshop DPI
Wayne Dixon. BHG Rm. 1, 10 am -
3 pm.
30 Staff Meeting Dr. Browning. BHG
Rm. 1, 8:30 10:00 am.
30 Multi County Citrus Extension Agent
Interviews & Seminar Dr. Norman.
BHG Conf. Rm. & Rms. 1&4, 8 am -
5 pm.

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