Title: Citrus leaves
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Permanent Link: http://ufdc.ufl.edu/UF00087049/00015
 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: March 2001
 Record Information
Bibliographic ID: UF00087049
Volume ID: VID00015
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.


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Institute of Food and Agricultural Sciences

Dr. Harold W. Browning, Center Director
Citrus Research & Education Center
700 Experiment Station Road
Lake Alfred, FL 33850-2299
Tel. (863) 956-1151
Fax (863) 956-4631

March 2001

Welcome to
Dr. Arnold Schumann
New faculty member

In This Issue
Dr. Kender Retires .................... 1

Diaprepes War Wages On:
Reports from the Annual Scientific
Meeting ................................ 2

Meet the Rouseff Lab............... 3-5
Tools of the Trade: Flavor and
Aroma Research ..................... 4

News Around CREC:
Welcome. Farewell, Congrats.... 6
ICS Faculty/Dev workshops ....... 6
Info & Training Seminars............ 6

Manuscripts Submitted .. ...7

Citrus Engineering Conference
Program .................................... 8

Citrus Leaves

Do you have any contributions for
Citrus Leaves? We welcome your
contributions and suggestions.
Editor: Public Relations, Monica
Lewandowski: Photography:
Gretchen Baut Production and
Distribution: Word Processing,
Barbara Thompson. Supervisor,
Kathy Snyder, Karla Flynn, Linda
Murphy and Justin Tabb; Cus-
tomer Service, Kathy
Witherington, Supervisor, and
Nancy Burke.

Dr. Kender Retires

Reception Includes Memories, Stories from 80's and 90's

Dr. Walter J. Kender, I
Professor of Horticulture,
retired on February 28 after
19 years of service to the I
University of Florida and
the Citrus Research and
Education Center. He was J
honored at a reception held
at CREC on February 26
that included 80+
colleagues, friends and
well-wishers. ..., p
"CREC is a great place .
to work," Dr. Kender told
the audience as he reminisced about his career.
He recalled that on his first day of work at
CREC. Dr. John Attaway showed him an
Orlando Sentinel story about possible
environmental and health risks of Temik, a
pesticide used by citrus growers. Thus, from
day one, he seemed to have one crises or
another on his hands
More crises followed, including citrus
canker, freezes, citrus tristeza virus, brown
citrus aphid, blight, groundwater contamination
issues, Diaprepes root weevil and others.
During his directorship. programs were

developed in these and
other areas of
importance to the citrus
He can llugh about
some of the "crises"
now, as he recalled an
incident in\ol inm Dr.
[ Herb Ni-g. Dr. Kender
recalled that without
t prior knowledge or
d s warning, Dr. Herb Nigg
contacted the "-bomb
squad" to destroy some
potentially hazardous petroleum ether. Soon
after. Dr. Kender received calls about
evacuating the Center so the bomb squad
could relocate the chemical to a distant site
and "blow it up"! Amidst some excitement,
the Center was evacuated for a short time
and the chemical was destroyed.
Dr. Kender credited the "grcalt scientists"
at CREC that have been able to meet the
numerous challenges facing the citrus
industry. He also acknowledged the
tremendous support of the Florida citrus

see Dr Kender Retires, page 2

Carole Kender greets On behalf to D)r. Kender's laboratory, Above, left to right: Carole Kender.
old friends, Dr. Uli Hartmond shared words of Dave Tucker, Eldon Brown, Jodie
thanks and presented him with a new Whitney and Harold Browning.
rod and reel,

Citrus Leaves

Citrus Research and Education Center News and Information


Volume 18, No. 3


War Against Diaprepes Wages On

Reports from the Annual Scientific Meeting

Over 80 growers, researchers and indus-
try personnel attended the Diaprepes Task
Force Annual Scientific Meeting on Febru-
ary 9 at the UF FAS Citrus Research and -I
Education Center (CREC) in Lake Alfred. .
The meeting was chaired by Clayton Mc-
Coy, CREC entomologist and Diaprepes
Task Force Scientific Coordinator.
The Diaprepes root weevil, Diprcpe q
abbreviatus, is a devastating pest of citrus
and other crops, including sweet potato,
sugar cane, corn and several ornamentals. Participants a
It was first documented in the Apopka area Scientific Me
in the I 60's, and has now spread to all ma- meeting featu

jor citrus growing regions in Florida.
This year's meeting included several participants from Texas,
who are now on the alert for a Diaprepes outbreak in their state.
Diaprepes was recentlN identified in a Texas citrus grove, and
researchers fear that the root weevil has spread to other groves.
"Although I believe we are slowing [Diaprepes] in certain ar-
eas, it continues its relentless advance and growers continue to
lose trees on a daily basis," said Garvie Hall, Diaprepes Task
Force Co-Chair and Bartow grove owner.
Harold Browning, CRIC Center Director, told the audience thai
researchers are focusing on ways to reduce the impact of Di-
aprepes. "it's a very serious problem," he acknowledged.
Special recognition was given to Buster Pratt, past Co-Chair
and a founding member of the Diaprepes Task Force. Pratt was
inducted into the Florida Citrus Hall of Fame at an industry lun-
cheon later that day.

Difficult Pest
The adult insects feed and mate on the leaves of citrus and
other host plants. The eggs hatch and larvae drop to the soil
where they feed on citrus roots, where they can cause extensive
mechanical damage. The wounds caused b,, feeding also renders
the tree vulnerable to Pfhyi'phlihra,: fungal infections, causing a
rapid and severe decline.
Current pest management programs are costly and while they
may help suppress an infestation, they do not eradicate the pest.
Researchers continue to make progress on improving current
pest manaL2ement programs. which include a combination of chemi-
cal treatments, biological control with parasitic nematodes, fungi-
cides for Plnrnphthora control and proper irrigation and fertiliza-
tion to improve tree health.
Much effort has been aimed at understanding the factors that
affect the efficacy of parasitic nematodes in the field. Nematode
species such as Steinernema riobrave, Heterorhabditis indicus
and H. bacteriophora parasitize and kill Diaprepes larvae in the
soil. CR FC researchers Larry Duncan and others have been study-
ing possible relationships between soil texture and nematode ef-
ficac\, as well as other factors that can influence the success of

t the Diaprepes Task Force Annual
eting on February 9, This year's
red an afternoon poster session,

this treatment, particularly under dif-
ferent soil types found in Florida.
CREC researchers Jude Grosser and
Jim Graham search for suitable variet-
ies that are resistant to Diaprepes.
More specifically, they are looking for
rootstocks that can tolerate mechani-
cal damage inflicted by Diaprepes lar-
vae. are resistant to Ph toilphtihora fun-
gal infection and capable of vigorous
re growth following Diaprep',s damage.
They have bred some hybrids that
show promising results in a Diaprepes-
infested field site %\ ith high-pH, calcar-

eous soils, a soil type found on the
Indian River and East coast growing regions.
Additional scientific reports included studies on the biology
of egg laying in Diaprepes and seasonal changes in insect popu-
lations, as researchers work toward developing better nan.ae-
ment strategies for this pest. Researchers also are exploring bet-
ter detection methods for Diaprepes, which is notoriously diffi-
cult to detect, particularly when an infestation is small. Areas of
research include the use of remote sensing to monitor Diaprepes
spread throughout an area and acoustic devices to detect under-
ground noises made by Diaprepes feeding on roots. Results on
testing of insecticides and thiamethaamn a pesticide used on
vegetable crops, were also presented at the meeting.

Dr. Kender Retires ... from page 1

industry, citing the Florida Citrus Production Research Advisory
Council's "box-tax" program as a prime example.
During his directorship, CR EC's education program expanded
to include the addition of several on-site courses and distance
education. The Hunt Brothers endowment for graduate student
support was established.
Other milestones during Dr. Kender's tenure included the
dedication of Ben Hill Griffin, Jr. Citrus Hall and a new %;ng to
Building 24, the construction of the student dormitory and
Building 71 07, new greenhouses and other fac lir impr oi events
Twenty faculty were hired during Dr. Kender's tenure, and in
1990, the Graves Endowed Chair in Citrus Biotcchinolo:_, was
For the past fi\ e years, Dr. Kender has been involved in citrus
abscission research.
At the reception. Dr. Kender was presented with a plaque from
CREC. a plaque of appreciation from the Diaprepes Task Force, a
new rod and reel from his laboratory group and a crystal clock
and illf cernficate from the CREC community.
Dr. Kender thanked his wife, Carole, for being his greatest

o 2 o

-V --A


Dr. Russell Rouseff

Original from: Chicago area.
Interesting background info: Earned a scholarship to attend an art institute (Saturday
classes) in Chicago from elementary school through high school. No", one ofhis creative
outlets is designing web pages for his laboratory and courses (www lal.ul.edu rousefT)
Career: Bachelor's degree in Chemistry from Wheaton College: master's degree in ana-
lytical chemistry from Southern Illinois. Then followed his major professor to the Univer- __
sity of Georgia. where we earned his Ph.D. Shortly before completing his dissertation. he
was offTrcd a teaching position at Polk Community College in Winter Haven. He subsequently finished his Ph.D. (he still has vivid
memories of him and his wife typing 4 copies ofhis dissertation on a typewriter ith carbon paper). After teaching tor three years, Dr.
RousetTaccepted a position at CREC in 1974- with the Florida Department of Citrus. In 1987, he accepted a Uni\ ersit of Florida faculty
position at CREC.
Dr. Rouseff's leads a research and teaching program the flavor chemistry of citrus, tropical juices, oils and essences and the human
perception of flavor. His lab is equipped with instruments such as gas chromatography-olfactometry, mass spectrometry, electronic
noses and other state-of-the-art equipment to characterize and identify flavor impact compounds.
Much of his recent work has focused on determining the key components that contribute to "good and bad" grapefruit juice flavor.
"We are just now starting to understand the driving factors for grapefruit juice [flavor]", Dr. Rouieff said. Interesting, they have
learned that trace components can have a noticeable impact on grapefruit juice flavor. For example, sulfur compounds contribute to
flavor of grapefruit juice. At minute concentrations, certain sulfur compounds are perceived as warm and fruity. At slielgtl higher
concentrations, Dr. Rouseff explained. these same compounds become offensive to the human nose, smelling "st ink ". "We're tr ing
to find the proper balance. It's not just one or two compounds," said Dr. Rouseff.
Dr. Rouseffis also directing research on the flavor impact ofcarotenoids, a group oforange-yellow plant pigments. Researchers are
discovering that some of the breakdown products of carotenoids can have flavor components. "It's a brand new area," said Dr.
Rouscff His graduate student, Kanajana Mahatianatawee, is currently working on this project.
Dr. Rouseffalso enjoys teaching and training graduates students. He teaches the course, Flavor Chcmistrn and Technolpgy. every
other spring semester. His lab includes Jack Smoot (chemist), Dr. Jianming Lin (postdoc), Dr. Filomena Valim (% isitine sc ienlist Glen
Dreher (Ph.D. student). Kelly Evans (M.S student). Aslaug Hognadortir (Ph.D. student) Kanjana Mahattanatawee (Ph.D. student).
April Elston (a Florida Southern senior who will enter the 1F graduate program this fall) and Kurt Schulbach (Ph.D. student at
Family: Wife, June, recently retired as Principal ofAlbert Elementary School. Daughter, Rebecca. 23, now lives in Key West. Son,
Christopher, a senior at International Baccalaureate High School; was recently) awarded scholarships to attend the University of
Central Florida in the fall

Jack Smoot
S Background: Born in Mar land, has lived in the Orlando area for most of his life.
Career: Bachelor's degree in Chemistry from Florida Technological University (now known as the
S University of Central Florida). Worked at the USDA Citrus and Subtropical Products Laboratory
in Winter Haven for 8 years, including 5 years with Dr. Steve Nagy (he commuted from Orlando
with Dr. C lay McCoy back then. as he does today). He then spent the next 18 years at the JUSDA
Horticulrural Research Laboratory in Orlando, working ith Dr Heinz Wuscher on mineral analy-
CREC: After the USDA lab was relocated from Orlando to Ft. Pierce. Jack came to work with Dr.
Rouseff in September 1999, which makes him the current "'veteran" of the lab. Besides being
chemist, he also helps keep the 8 networked computers and other electronics in the lab running.
Other: Wife. Jill, works at the Florida Hospital in Orlando. Daughter Julie, is a high school senior,
and daughter Jennifer, a high school sophomore. Enjoys scuba diving, hiking, and playing tennis.


THE ROUSEFF LAB, continued

W- Glen

Grew up in
West Palm
S Florida.
S Career:
Holds a
degree in
Food Science from Purdue University.
Entered the Ph.D. program at UF in
January, 1999, and spent a year at the
UF-Gnv. campus in coursework.

Other: Glen is engaged to be married in
May. His fiancee, Renee, is graduating
from UF in the spring from with a degree
in dietetics. Glen likes to plain volleyball
during lunch. His pets include 3 ferrets
and a coral reefaquarium.

I Kelly
Native of
S t Springs,
dereidegree in
in June 1999 from Georgia Tech University
in Atlanta.
CREC: InAugust 1999, Kelly entered the
UF graduate program to obtain a master's
degree in Food Science. She mor ed to Lake
Alfred in January 2001. Her research in-
volves the identifying and characterizing
aroma impact compounds in tangerinejuice
with gas chromatograph; -olfactometn and
other state of the art techniques.
Other: Kelly was on the track team at Geor-
gia Tech and UF. specializing injavelin and
discus. She recently ran her first marathon
as a participant in the Disne% Marathon on
January 9, completing the 26.2 mile course
in 5 hours, 40 minutes.


l Back-
S A r_ h anter
Sw from Lake
S- 0.... Region High
Sc hool. is
now a senior at Florida Southern College.
Will graduate this spring with a B.S. in
CREC: April came to CREC with another
senior chemistry major looking for an un-
dergraduate research project in chemistry.
April was the stimulus for this first inter-
institutional arrangement between UF,
CREC and Florida Southern. Iler project
involved the use of gas chromatography-
ol tactometryv to determine the aroma impact
components in rose oil and a citrus juice
blend study utilizing an electronic nose (see
below). She is currently preparing her re-
sults for publication. April plans to pursue
a UF master's degree in food and flavor
chemistry, and was recently awarded a CREC
Graduate Assistantship starting Fall 2001.

Tools of the Trade: Flavor and Aroma Research
Dr. Rouseff's laboratory is equipped with slate-of-the-art instrumentation for fla or and aroma identification and characterization.
"Flavor has many different aspects," says Dr. Rouseff. when explaining the different instruments used. Below are some of the
equipment used in his research. He works closely with the citrus processing industry to provide information for quality control -
with the ultimate goal of producing quality citrus products for the consumer. Funds for this equipment were provided by the F orida
Department of Citrus, BARD (Joint US-Isreali research fund), commercial grants and the UF/IFAS Dean for Research.

GCO Gas chromatography (CC)-
olfactometry (0)
This instrument enables a user to
analyze a sample by GC and
simultaneously provide a human
description of the type and intensity of
odor. The human response is critical,
said Rouseff, because humans are

\trcmelt sunsiili\ e
to certain
compounds, and
oblivious to most
volatile compounds.
Responses from 2-3
panelists are
combined to obtain
an average

, -


Electronic nose
This apparatus attempts to
simulate the human nose. It
uses a series of 20+ solid state
sensors of different
selectivities to generate a
paniern that is characteristic
of each product. This is a
rapid and reproducihle way to
analyze the volatile 1
compounds responsible for
both pleasant and unpleasant
aroma. Its primary intended use is a
rapid quality control tool that requires no
sample preparation.

High Performance Liquid
Chromatography. It is used
in the Rouseff Lab for
analysis of carotenoids,
flavor precursors and semi-
volatile compounds.
*... Components are detected
with UV-vis ua elenglh and
--fluorescence detectors.

Gas chromatography-mass spectrometry, for
characterization and idenrllitainln ii t i ,liaril e
compounds based on their fragmentation patterns.
It is the most widely accepted technique for
compound identification.



THE ROUSEFF LAB, continued

Dr. Jian ming Lin
Background: Native of Southeast China.
Career: Bachelor's and Master's degree from
Xiamen University in Southeast China. Ph.D.
in Food Chemistry from Lausanne University t
in Switzerland. Her doctoral research involved I
the study of meat flavors atthe Nestle Research
Center in Lausanne, a large facility) for research
on coffee, chocolate, meat, dairy products and I
other foods. Switzerland. Germany and other -
European countries are home to some of the
world's premiere flavor research centers.
Post-doc Dr. Ji
Came to CREC: October 1999. Dr. Lin was student AsDau
student Aslaug
interested in fruit flavors, and wanted to work
with Dr. Rouseff because of his international
reputation in citrus flavor and aroma research.
Other: Dr Lin's husband, an organic chemist, is currently a
post-doc at Indiana University in Bloomington. They have a
19-month old daughter, Cindy.

I luifi

Aslaug Hognadottir
f EBackground: Native of Reykjavik,
Career: Bachelor's degree and M.Sc. in
Food Science from the University of
Iceland in electronic nose sensing. Has
experience in the food industry and food
research, including quality control and
savory analysis.
CREC: Entered the UF Ph.D. pror-am in
1999, and spent a year at the Gnv. campus
taking coursework. She is currently
ng Lin ilerb and Ph.D.
gLiadn r holds a Hunt Brothers graduate
assistantship, and splits her time
between Lake Alfred and Gainesville.
She is evaluating techniques for analyzing samples for o ifacometr%
(measurement of volatile components, odors) and other aspects of
flavor chemistry.
Other: Aslaug's husband is currently pursuing a Ph.D. in Chemistry
at UF. She notes that the main difference between Iceland and
Florida is, of course, the weather! She enjoys the cultural diversity
in Florida and found the recent presidential election issues

Ji l l I1 Dr. Filomena

Visiting Scientist
i from the School of
Sciences at Sao
Paulo State
(UNEI SP) in
S i Araraquara,Brazil.
where she teaches
courses in food technology and sensory analyses. Brazil's
first orange juice processing plant was built in Araraquara,
which is the the middle of the country's citrus belt.
Career: Dr. Valim holds a Bachelor's degree in Food
Engineering, Master's degree in Food Science and a Ph.D. in
Food Technolovyv from the Unmversity of Campinas (UNICANMP)
in Brazil. (CREC's Dr. Chin Shu Chen chaired the Food
Engineering Department at U N IC A NMP in the mid-70's be fore
moving to CREC. They didn't overlap but do know each
CREC: Dr. Valim arrived last September. She is studying
strecker aldehyde kinetics and tropical juice flavors.
Other: Dr. Valim's husband is a plant operations manager at
Citrosuco in Lake Wales. They have 3 children: Gabriel (age
14). Rafael(age 12) and Henquire (age 91.

Kanjana Mahattanata: ee
I .Background: Native of Bangkok.
Thu land
Career: Kanjana holds a bachelor's
degree in Microbioloig from
S Srinakharinwirot University and a
S master's degree in Industrial Microbi-
'. ology from Chulalongkor University
in Thailand. She \ent to Japan on a 1-
year UN E SCO scholarship to conduct
research in microbiology and biotech-
nology. She subsequently joined the
faculty in the Department of Food Bio-
tec hnology at Siam University, where she was awarded a scholar-
ship to pursue her doctorate at UF.
CREC: After examining several of Dr. Rouseffs publications on
the Internet, Kanjana inquired about working with him as a Ph.D.
student. She entered UF in Spring 1999 and completed her
coursework at the Gnv. campus. In October 2000 Kanjana moved
to Lake Alfred. Her research involves studying carotenoids and
carotenoid-derived compounds and their role in aroma and flavor
in orange juice.
"I am very happy to be here!" Kanjana says enthu-.iasiicnll\.
She likes CREC's research environment, the friendly people and
the opportunity to learn about other areas through seminars.
Other: Kanjana's family is in Thailand, but she has a sister in
pursuing a Ph.D. in architecture at Carnegie Mellon University in
Pittsburgh Kanjana enjoys nature, mountains and waterfalls.

. 5
i -


From Personnel
t Time Cards Due:
Mon, March 12
Mon March 26

CREC Graduate
Student Discussions
Tuesday, 4 -5 pm
BHG Teaching Lab

CREC Graduate students etal.
invite you to join them every
Tuesday afternoon. 4:00 5:00 pm in
the BHG Teaching Lab for an
informal discussion about research,
education, etc. A different CREC
speaker is featured each week. For
more information, contact Fahiem
Elborai Kora.

ICS Faculty/Staff
Development Workshops

1FAS Communications Services (ICS)
offers workshops in various topics for
all personnel. Most of the workshops
are held in the UF/IFAS Distance
Education Center in Gainesville, but
many are offered by request at CREC
through the videoconferencing
network and are open to everyone at
CREC. For more information and the
full spring schedule, see: http /1
disted.ifas ufl.edu/support/training htm

To sign up and request the
videoconference at CREC. go to:
http '/disted ifas ufl eduisuppon/

March 14 Web Accessability -
Creating/checking web pages for ADA
3:00-4:30pm, IFAS Distance Educ
Center, LrF campus and requesting
videoconferencing sites

Sign up at http://disted.ifas.ufl.edu/
support/trainingsignup him to request
the vdeoconference at CREC.

A CREC Welcome to ....

Abdullah D. Azadjali Visitor (Dr.
Ester Caturano -Visitor (Dr. Grosser)
Dr. Maski Davananda Post-doc (Dr
Loprevite Francesco (Visitor (Dr.
Hendy Lang OPS (Dr Albrigo)
Lance L Lewis OPS (Dr Nigg)
Rengil Philip OPD (Dr Goodrich)

Farewell ....
Kurt Elliot (Kelly Mourgan)

Kelley(Craddock) daughter
of Glenn Craddock from the
Maintenance Shop. married
to Chns Frable on Feb 18 in

Information and Training Seminars -

Mlarch 16
"Understanding the Meaning and Need of Replication"
Dr. Ramon Littel. Professor of Statistics, UF
Friday, March 16 11 am-12 noon
BHG Rooms 3-4

"Fire Safety and Fire Estinguisher Training"
Mr. Larry Cloud, Chief, Lake Alfred Fire Department
Friday. April 6 11 am-12 noon
BHG Room 1

"Statistics: Comparison of Means -Contrast and Multiple Comparisons"
Dr. Ramon Littel, Professor of Statistics. UF
Friday, April 13 1 am-12noon
BHG Rooms 3-4

May 4
"General Home and Work Safety"
Mr. Larry Cloud. Chief. 1ake Alfied Fire Department
Friday. May4 11 am-12 noon
BHGRoon 1

June 1
Part 1: Tool Safety/ Part 2: Defensive Driving
Dr. Carol Lehtola, Asst. Prof. Ag and Biol Engineering
Friday, June 1 I am-12 noon
BHG Room 1

April4- Designing a Course With
This session is targeted at faculty who
currently have a WebCT account or
about to get one. We will discuss is-
sues related to organizing and present-

"6 6

ing course information with the WebCT
interface and how to enhance your
WebCT site with web pages and other
resources not available with WebCT

Sign up at http://disted.ifas.ufl edu/
support/trainingsignup him to request
the videoconference at C R E C

Manuscripts Submitted in February 2001

J. H. Graham and K. R. Kosola. Costs and Benefits of Citrus Roots in Relation to Activity of Root Pathogens
Proceedings ofthe International Society of(itricullure.
Z. Deng, S. Huang, P. Ling, C. Yu, M. K. Wendell, H.-B Zhang, F. G Gmitter, Jr. Fine Genetic Mapping
and Bac Cont ig Development for the Citrus Tristeza Virus Resistance Gene Locus in Poncirus trifoliata (Raf).
Molecular and General Genetics.
E. Echeverria, A. Brune, and P. Gonzalez. Citrate Uptake Into Tonoplast Vesicles From Acid Lime (Citrus
aurantifolia) Juice Cells. Proceedings ofthe International Sciety of( 'Iricullure.
J. P. Michaud. Responses of Cyclonedu .anguinea and Harmoniu axvridis (Coleptera: Coccinellidae) to Eight
Fungicides Used in Florida Citrus. Journal ofInsectScience.
C. C. Childers. Integrated Mite Control on Florida Citrus. Proceeding of the International Society ofCitri-
J. K. Burns, C. R. Arias, L Kostenyuk, M. Obraztsova, L. Pozo, Z. Wu, G Y. Zhong. Isolation Character-
ization and Expression ofAbscission-related Genes in Citrus. Proceedings ft'he International Soc 'Iy of
Z. Deng, S. Huang, P. Ling, C. Yu, C. Chen, M. K. Wendell, E G Gmitter, Jr. Mapping and Cloning Dis-
ease Resistance Genes in Citrus. Proceedings of the International Society of ( 'rncult ure.
J. L Valiente and L. G Albrigo. Modeling Flowering Date of Sweet Orange (Citrus smensis (L.) Osbeck)
Trees in Central Florida Based on Historical Weather Records Proceeding.' ofthe International Si, ie of
L G. Albrigo and J. P. Syvertsen. Foliar Urea as a Substitute for Soil Applied N During Establishment of Citrus
Trees. Proceedings of the International Socie/ ofCitriculture.
L.R. Parsons. Irrigation and Florida Citrus Proceedings ofthe International Society ofCitriculture.
C. C. Childers, R. Villanueva, H. Aguilar, R. Chewning, and J. P. Michaud. Comparative Residual Toxicities
of Pesticides to the Predator Agistemts industani Gonzalez (Acari: Stigmaeidae) on Citrus in Florida Experi-
mental andApplied AL arologr
C. C. Childers, H. Aguilar, R. Villa n ueva, and M. Abou-setta. Comparative Residual Toxicities of Pest ic ides
to the Predator Euseius mesembrinus (Acari: Phytoseiidae) on Citrus in Florida. Florida Entomologist.
M. Lewandowski. Irrigation Today Tips for Growers. Citrus IndustrvMagazine.
H. N. Nigg, S. E. Simpson, C. W. McCoy, N. W. Cuyler, L. Yang, B. Bas, and J. Barnes. Reproductive
Biology of Florida Populations ofDiaprepes abbreviatus L. (Coleoptera: Curculionidae). Journal of Entomo-
logical Sciences.
S. H. Futch, C.. C. Childers, and C. W. McCoy. Citrus Mites. Citrus Industry Magazine.
E. Knapp, W. 0. Dawson, and D. J. Lewandowski. The Conundrum ofthe Lack of dR NAs Associated with
Tobamovirus Infections: dRNAS That Can Move Are Not Replicated by the Wild-type Virus: dRNAs That Are
Replicated by the Wild-type Virus Do Not Move. Journal of T iology.


A. 5. M. E.

47th Annual Citrus Engineering Conference
March 22, 2001
Ben Hill Griffin, Jr. Citrus Hall
*Registration. 8:30 9:30 am

An All Day Conference Dealing 1ith Engineering Problems of the Citrus Industry
and How They Are Being Solved

Paper # 1 Preventative/Predictive Maintenance
Lyle McCormick, Omega Consultants

Paper #2 Ammonia Refrigeration -Automation and Efficiency
Dean Ellerbrook, Kelly Refrigeration

Paper 3 Manufacturing Execution Systems

Lunch Break on your own

Presentation of the Twentieth An nual "Citrus Engineering Award"
by Susan Postans, Director of Commercial, Industrial and Governmental Accounts

Paper #4 Evaporator Automation
Dan Milla, FMC and Marcelo BeUarde, Citrosuco N.A.

Paper f#5 Aseptic Quality Critical Control Points, Sampling and Testing
JeffRausch, ENERFAB

Paper 46 Mechanical Harvesting
Dr. Galen Brown, FDOC

*Advance registration should be mailed to Citrus Engineering Conference c/o Greg Schrader, PO Box 1708,
Lakeland, FL, 33802. Advance registration fee of $40.00 covers a bound volume ofthe Proceedings of the
Conference and afternoon refreshments. Student fee is $15.00 (with student ID.). Late registration fee of
$50.00 applies to all receipts after March 19,2001 and at the door.
Additional information may be obtained by contacting Dr. William Miller (wmm@lal. ufl.edu or Ext. 229).


March 2001

Sun Mon Tues Wed Thurs Fri Sat

1 2 3
I&T Seminar
Design Tips
for Powerpoint

4 5 6 7 8 9 10
8:30- 10:30
Grad student
4-5 pm

11 12 tension 14 15 16 17
1 1 District IV S atsi
CED Mtg Setisti
FCPRAC Seminar:
-"FCPRC Replication"
Florida Blue- Dr. Littel 11 am
Grad student berry Growers
seminarldisc _________ Assoc. pm

18 Pmotion19 20 21 22 23 24
& Perman, Rural Water
Status Citrus
W. Fleming Engineering
Grad student Conference
4-5 pm


presents. 27
- Pink Hib scus
-EDIS Editor
Grad student

EDIS Editor


Retirement 30
Recepton. 3
Gordon Omit, Citrus
& Veg magazine
- FDACS. BMP mtg


March 2001
2 Info & Training Seminar, Design
Tips for Powerpoint. M. Lewan-
8 Faculty Meeting, BHG Rooms 3/
4, 8:30 10:30 am
13 Ext. District IV CED/Secretanes'
meeting. BHG Room 1
FL Citrus Prod. Research Advis.
Council, BHG Rooms 3-4, all day
15 Florida Blueberry Growers
Assoc. evening
16 "Understanding the Meaning
and Need of Replication Dr.
Ramon Littell, UF Prof. of
Statistics. BHG Rooms 3-4
19 Promotion and Permanent
Status Workshop, William
Fleming, UF/IFAS Personnel.
BHG Rooms 3-4.
21 Rural Water workshop
22 Citrus Engineering Workshop.
Florida Section of the American
Society of Mechanical Engineers,
Registration: 8:30 am. All day
conference. BHG Rooms 1-2.
27- FL Citrus Prod. Research Advis.
Council, BHG Rooms 3-4, all day\
Biological Control of the Pink
Hibiscus Mealybug. Jack Shirley.
BHG Room 1.
27-28 EDIS Editor workshop.
BHG Teaching Lab.
30 Retirement reception, Gordon
Smith, Citrus & Vegetable
magazine. 1 pm, BHG Rooms 1-
FDACS, BMP mtg, Ken Kuhl,
6HG Rooms 3-4.


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