Title: Citrus leaves
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Permanent Link: http://ufdc.ufl.edu/UF00087049/00064
 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: February 2003
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Bibliographic ID: UF00087049
Volume ID: VID00064
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.

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rmI It i r !T;-


UNIVERSITY OF
FLORIDA
IFAS


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


Citrus Leaves


February 2003


* R a s In V 2i I


In This Issue
Exchange Fair and Ice Cream .......... 1
Dr. Ismail, Sam Killebrew in Fla. Citrus
Hall of Fam e ................................ 1-2

Around the Center in Jan.
Freeze, Computer Workshop, Visits by
Penecostal Christian Acad., PCC, WHHS
students ......................................... 3

More Jan. News
Production Mgrs., Plant Improvement
Team at w ork ................................. 4

M eet... D r. Hong Li .......................... 5
Citrus Pest Mgt. course ................. 5
In Memoriam, Hardy, Raley ............... 5

News Around CREC
W welcome, Farewell ......................... 6
Congratulations .............................. 6
Phone Questions ............................ 6
Facilities News ............................... 6
Manuscripts Submitted ................... 6

CREC Spring Seminar Schedule ....... 7

C alendar ........................................ 8






Citrus Leaves
is the monthly newsletter for
employees and friends of CREC.
Would you like to be in "Citrus
Leaves?" We welcome your
contributions, suggestions and
corrections. Editor, Monica
Lewandowski; E-mail
mmlewa@lal.ufl.edu; Ext. 1233.
Photography, Gretchen Baut;
Production and Distribution: Word
Processing, Barbara Thompson,
Supervisor; Kathy Snyder, Karla
Flynn and Linda Murphy; Customer
Service, Kathy Witherington,
Supervisor, and Nancy Burke.
On the web: www.lal.ufledu and
click on NewsAt CREC/CREC
Campus Newsletter


Feb. 28 Surplus Supplies Exchange Fair and

Ice Cream Social
What's this??? CREC is hosting an exchange fair a sort of laboratory/ '
office "yard sale." It's an opportunity to clean out your labs and offices and I
share with those who could use your surplus supplies. It's also a chance for I
you to obtain items that would be otherwise be unused or discarded. I 1

Ice cream? Yes, we're hosting an ice-cream social in conjunction with the event --
so come join us for ice cream!

When and where? Feb. 28 at 3 p.m., in the employee break room in Building 24.

Most important rule: Lab and office supplies and equipment are state property
and can be used for work use only. J hi1iig can be taken for personal use.

How will this work? If you have surplus lab or office supplies (in usable condition) to give
away, bring them to the break room between 1 3 p.m. on Feb. 28. At 3 p.m., all personnel are
invited to come down and take a look. If you see something you can use, it's yours.

How about chemicals? Yes but don't bring the chemicals to the exchange fair. Instead, send a
list of your chemicals AND a contact name to Monica Lewandowski (nllllll \\ ll I il CdlI and a
master list will be compiled. Or ... bring your list to the exchange fair. Those interested in
chemicals can speak with contact persons directly.

How about items too large or dangerous to move? If you have an item that is too large or
dangerous to move, just bring a brief description of the item and a contact name on a sheet of
paper.

How about items on inventory? If you are giving away an item that is catalogued as part of an
inventory for UF, FDOC or another agency, follow the agency's proper procedures for change in
o\\ ni.iclp". Please identify it as "ON INVENTORY" with a note and contact name. UF
inventory items have a University of Florida barcode decal with property number. If you are
discarding a UF inventory item, contact Perry Love or Dan Tuzzulo to remove the item off your
inventory. If you take an inventory item, you should also notify Perry or Dan to record its new
owner and location.

Any other limitations? Just use some common sense. Please don't bring items that are irreparable
or unusable. If items are broken but repairable, leave a contact name so the new owner can
contact you if necessary.

What if no one takes my stuff? Unclaimed items must be removed from the break room by 12
noon on Monday, March 3, or otherwise will be thrown away.

Questions: MonicaLewandowski, CREC Public Relations, Ext. 1233 oi ilinllc\ Iill cdIL

Dr. Ismail, Sam Killebrew ,

Inducted Into Florida Citrus

Hall of Fame

Story on p. 2


* N.








Dr. Ismail, Sam Killebrew Elected to Florida Citrus Hall of Fame
From a Florida Citrus Hall of Fame media release by Brenda Burnette


WINTER HAVEN, Fla. (Jan 16,2003) -Dr. MohamedA. Ismail,
Senior Research Scientist for the FDOC at CREC, and the late pio-
neer, SamH. Killebrew, Sr., were elected to the Florida Citrus Hall of
Fame. Induction ceremonies will be March 28 at the Annual Gov-
ernment Day Luncheon held at the Florida Citrus Building in Win-
ter Haven, co-sponsored by the FDOC and the Florida Citrus Show-
case.


Dr. Ismail is most noted for his research for
the fresh fruit industry, which culminated in a
U.S. patent for an automated citrus peeling ma-
chine. Dr. Ismail was instrumental in the commer-
cial application of cold treatment for quarantine
purposes that reduced worker exposure to fumi-
gants and maintained the flow of Florida grape-
fruit to Japan during a crucial market crisis. To-
day, Japan imports over ten million cartons of
Florida grapefruit annually.
Citrus grower and Hall of Fame Selection
Committee member John D'Albora described Dr.
Ismail's contributions to the fresh fruit industry
as "voluminous," referring to his work for the
export program and the citrus peeling machine,
which was designed to develop a new market for
"fresh-cut" citrus fruit.
"The fresh-cut program, to me, is one of the
things that will change this industry as much as
concentrate did,"
D'Albora said. "It will
definitely catch on in
time."
Bornin Cairo, Egypt,
Dr. IsmailreceivedaB. Sc.
in Agriculture in 1959
from Cairo University and
a Masters of Agriculture
from Purdue University in
1963. After obtaining his
Ph.D. from the University Dr. Ismail in the laborat
of Florida in 1966, he be- career.
gan his career with the
FDOC as a chemist in flavor re- Dr. Mohame
search, working with Dr. Richard of the Florida
Wolford and C.D. Atkins. He
Dr.ArthurF.
advanced to plant physiologist Dr. Herman
Dr. Herman
in 1970 and went on to study Dr. W L. "
postharvest physiology and cit- I
Dr. Ivan Stev
rus utilization, areas in which he
Dr. Robert C
excelled. In 1987, he became D.
Dr. William i
Assistant Director of Scientific
Dr. James W
Research and later Director in
1995, heading the 17-member Florida Dep
postharvest research and me- Dr. Louis G
chanical harvesting team CedricDona
through 2001, when he stepped Dr. Edwin L.
aside to devote more time to re- Dr. JohnAttl
scientific n


ory, earlier in his


search and commercial development of the citrus peeling system
and fresh-cut market. Currently, he is the Senior Research Scientist
and Professor for the Florida Department of Citrus at CREC.
Dr. Ismail has authored and co-authored more than 125 scien-
tific papers and articles, several of which have won awards. His
accomplishments include developing a physical-chemical waste-
water treatment for citrus packinghouses to reduce the levels of
pollutants in effluent; the use of growth regula-
tors on Florida navels and Minneola tangelos to
Hall of Fame extend shelf life; developing optimum methods
en annually to for shipping fresh grapefruit to Japan, thus help-
who have given ing to maintain Japan as an export market; the
time and efforts first website for postharvest information on
lent of Florida's Florida citrus; leadership in regulatory matters
n any of the affecting the Florida citrus industry before na-
s: pioneers, tional and internationalforums; serving as a mem-
ig, processing, ber of the U.S. delegation to the CODEX Com-
ntific and/or mittee on Pesticides Residues; and participating
in national and international efforts to improve
i attending this postharvest technology and quarantine treat-
ceremony and ments against citrus canker and tropical fruit flies.
128, contact the Dr. Ismail's awards include the Florida Fruit
ase, (863) 292- and Vegetable Association's "Annual Research
)ept. of Citrus, Award" in 1983, The Grower magazine's "Excel-
lence in Research Award" in 1982, as well as the
Governor's Award for "Most Valuable and Dis-
tinguished Service to the State of Florida" from
Governor Bob Graham.
He has been a leader and speaker on numerous national and
international research panels and symposiums, and has served on
a number of agricultural committees throughout the world in the
areas of quarantine treatment, citrus marketing, pesticide usage
and postharvest physiology. He is a member of the American Soci-
ety for Horticultural Science and the International Society for Citri-
culture. He is also an honorary member of the Florida State Horti-
cultural Society, in which he served as vice president in 1981, sec-
retary from 1989-1994, president in 1995 and chairman in 1996. In
addition, Dr. Ismail has served on numerous civic organizations,
including the Lions Club and Toastmasters International. He was


d Ismail and Sam Killebrew willjoin 139 members
SCitrus Hall of Fame, including:
Camp, CREC Center Director, 1935-56
J. Reitz, CREC Center Director, 1957-82
immy" Thompson, entomology, 1927-63, CREC
vart, horticulture, plant nutrition, 1951-87, CREC
.J. Koo, horticulture, irrigation, 1954-90, CREC
Grierson, postharvest, 1953-61 and 1965-82, CREC
. Kesterson, processing, 1947-80, CREC
artment of Citrus Scientists:
MacDowell FDOC scientific director, Lakeland
dd Atkins FDOC chemist, 1942 1973
Moore FDOC chemist, 1942 2002
away, Sr. -FDOC chemist, 1959-68 and FDOC
search director, 1968-95


also active in Polk County schools
and served as chairman of the
Polk County Schools Advisory
Council for two years. He and his
wife, Fawzeya, live in Lake Alfred
and have three children, Luby, of
Silver Springs, Md. and Esaam
and Hesham, of Lake Alfred.

Sam H. Killebrew, Sr. (1914 -
1978), of Auburndale, Fla., was
best known for inventing a
fertilizer trailer in 1952 that
eliminated the manual handling of
fertilizer, including bagging,
opening and dumping the
please see Hall of Fame, p. 5


Florida Citrus I
inductees are chos
honor individuals
unselfishly of their
towards the better
citrus industry i
following field
harvesting, packir
marketing, scie
educational areas.

For information o0
year's induction
luncheon on March
Fla. Citrus Showc;
9810 or the Fla. E
(863)499-2500.







Around the Center in January...otos Gretchen Ba
Photos by Gretchen Baut
Bracing For Freezing Temps ..
We had some cold nights and ominous freeze warnings in January, but citrus growers -
seemed to escape major damage. Left, members of Dr. Gmitter's lab put up cold
protection for greenhouse plants; right, Dr. Larry Parsons examines some fruit for
freeze damage. According to a media release from Florida Citrus Mutual, many
citrus growers used the IFAS Florida Automated Weather Network, or FAWN, to
track temperature during cold nights. FAWN provides data for temperature, rainfall
and other weather parameters from 27 stations in Florida, posted every 15 minutes.
I FAWN is online at fawn.ifas.ufl.edu and accessible toll-free in Florida at 866-754-
1 5732. CREC has a FAWN weather station located just southeast of BHG

Computer Tools
Drs. Richard Buker and Tom Hintz (IFAS Information
Technologies) held a computer workshop for citrus growers
at CREC on Jan. 22. They demonstrated several resources
for citrus growers, including online weather data, pest and
disease information, flower bud induction advisories and
irrigation scheduling guidelines. A CD with citrus resources
was distributed to all participants, and plans are underway .i.i
to make the CD available to other interested. For more
information on purchasing the CD, contact Dr. Buker at isb at ,I ufl icdu or Ext. 1201. Photos: above left, Tom Hintz (left) and Richard Buker
(right) demonstrate some computer tools to Dr. Jim Griffiths, seated. Above right, laptop computers were set up for class participants.


Penecostal Christian Academy
B10olo0,' stiiudk Il from Penecostal Christian Academy in
\\ iinul Hj\ c n visited CREC on Jan. 16. They toured the
E kc lioil N I ic ioscopy Laboratory with DiAnn Achor, the
inIScciun \\ il Ja.nnette Barnes, Nadine Cuyler and
Rholnda Scluinl.nn (fromDr. Nigg's lab), and the pilot
plan \\ ill Mlonic.i Lewandowski.
Plhoto lft Situdents and teachers fromPenecostal
C hrisilin Acadiclily.
Far left photo, Rhonda Schumann and
Nadine Cuyler talk about ongoing ex-
periments for Diaprepes root weevil
S management; middle photo, Nadine
4. k Cuyler (far right) shows some curious
students an adult root weevil; right
photo, Jeannette Barnes (second from
right) tells students about the biology
of the Diaprepes root weevil.


w i.l
6 4


Polk Community College Biology
Biology majors from Dr. Debbie Sipes' biology course at Polk Community College
visited CREC on Jan. 17 to tour some labs and gain some insight into biology research
as a career. Above left, Dr. Dennis Lewandowski (far left) show students virus symp-
toms on plants and explains some of the tools and techniques of molecular biology.
Above right, John Cook (left) from Dr. Bill Dawson's laboratory explains some of the
work involved in studying the molecular genetics of the citrus tristeza virus.


Film Project
Winter Haven High School students Amanda
Jackson (left) and Dusty Miller used a CREC
laboratory as a setting to film portions of their
documentary on effects of the drug, Ecstasy,
on memory loss. They are producing the docu-
mentary for a high school film competition.


I ,,


I


1








More January News...
Production Mgrs Thank Dr. Knapp
The Florida Citrus Production Managers
recognized Dr. Joe Knapp (left) for 24 years of
service to the citrus industry at their meeting held
j Iat CREC on Jan. 8. Dr. Knapp retired in 2001 as
SI Professor of Entomology and Extension Specialist
in Integrated Pest Management.
Near right, Dr. Clay McCoy and far right, Dr.
Richard Buker address the production managers.
At the Production Managers meeting: left, Margie Wendell (left) nid
Misty Holt set up a display of citrus varieties under evaluation b)
( RE C s Plant Improvement team, which includes Drs. Fred Gmitter,
Jude Grosser and Bill Castle.
Right, Dr. Gmitter speaks to citrus growers at the Production
Managers meeting. The growers we ic in nicd to \Liinunii soiln
promising new varieties, including sccii d kl iiundllii. I n111 d cI I1 111- .
maturing Valencias.


Plant Improvement Team
Dr. Jude Grosser (right) ic\jllllllliS Soiinc ctllt ii
inhis laboratory. Dr. Grossc iiLC I I Cut liiu ILIIc
and molecular methods to dei clop iInplo\ cd
citrus varieties. Traitsof IllntiCi Inidiclue di.ls
and pest resistance, fruit aid liICC qualill aind
color, good fruit yield and cold tolc i Ian Lctl
photo, Drs.Ananthakrishna.in it lindw \\ll nu
Guo, postdoctoral
r sC liCl tlS in Dr. Grosser's lab, work in
MllK Iaboiaioi. n
t01, l members of the Plant
Imp Iln ln iion team hard at work. Left,
Mlil'ic. C.aln ic examines a culture under : -
S Il, ,U iciocope. Near right, Patricia : ....
SBrickin.ii doing some tissue culture
- work, and faI right, Orrinna Speese in
the greenhouse.


Photos by Gretchen JLaut


Above left, Ajia Paolillo (left) and Dr. Bill Castle enjoy a light
moment to celebrate Ajia's upcoming wedding. Right photo: also
present to wishAjia best wishes, Dr. Larry Jackson, Jim Baldwin,
Ajia and Jim Nunnallee. Dr. Castle's program focuses on citrus scion
and rootstock development, evaluation and selection.
Photos by Gretchen Baut


Above, Xu Xiang (left) and Huang Shu examine data
in Dr. Gmitter's laboratory. Dr. Gmitter and his lab
group conduct research in citrus breeding and
genetics.








Meet... Dr. Hong Li
S Dr. Hong Li, a CREC postdoctoral scientist with Dr. Jim Syvertsen, is presenting a seminar
on Thursday, Feb. 20, at 11 am, "Spatial and temporal soil variability management using GIS
and remote sensing technology." The seminar willbe held in BHG Room 1.
Dr. Li is working on precision agriculture/plant water stress/soil variability for citrus with
Drs. Jim Syvertsen and Arnold Schumann. Her research interests include understanding
S J plant-soil-landscape relations. She is working on spatial and temporal soil variability
management using GIS-based data and aerial infrared photography and multivariate
autoregressive state-space analysis of crop yield, soil N, water and field heterogeneity.
Dr. Li earned her Ph.D. degree in soil fertility/plant nutrition at Laval University in Canada
in 1997 and subsequently worked at Texas A&M University and North Carolina State University
on precision agriculture, variable rate N applications, geographic information System (GIS),
remote sensing, geostatistics, and simulation modeling plant growth and N balance to increase water and nitrogen use efficiency for
several crops including potato, oats, cotton, wheat, and soybean.


Citrus Pest Management
Dr. Larry Duncan (left) coordinates the course
Citrus Pest Management. The course is offered on
Thursday afternoons from 3 6 pm, and is team taught
by Drs. Duncan, Graham, Futch, Browning and
Chung.
Right photo: Dr. Duncan with two of the students in
Citrus Pest Management, Tris Curry (center) and
Darryl Mayo.

Photos by Gretchen Baut.


In Memoriam
The citrus industry lost two prominent figures in January, Nancy Hardy (left)
and Bill Raley, Sr. (right). Nancy Hardy was the longtime editor of the "Citrus
Reporter" newsletter, which was established by her father, Jack Gurnett. She
was also a writer for The Produce News for over 30 years and was a senior
writer for Citrus Industry Magazine for over 20 years. Last year, she joined her
father as a member of the Florida Citrus Hall of Fame.
Bill Raley, Sr., a Polk County area business and citrus industry leader, was a
former Florida Citrus Commissioner, Florida Citrus Mutual President, chairman
of the board of Dundee Citrus Growers Association and board member for
Florida's Natural Growers. Raley is inducted into the Florida Citrus Hall of
Fame, along with his wife, Thelma Raley, of Winter Haven.


Florida Citrus Hall of Fame ... from page 2
fertilizer into spreaders. Originally designed for Adams Packing
Co. ofAuburndale, the trailer was so successful that he opened his
own business to accommodate the orders. He and another Adams
Packing Co. mechanic, Bob Wistine, opened K&W Specialty
Company in 1952 with $200 Killebrew borrowed from his father-in-
law and a credit line at Sears on which he charged a welding machine.
Within a year, Killebrew bought out his partner and renamed the
company Sam Killebrew, Inc.
Killebrew's trailer eventually evolved into a four-compartment
side-dump hauler that saved labor, time and money. As his
manufacturing business grew, Killebrew used his ingenuity to
design other innovative systems such as dry and liquid fertilizer
spreaders, logging machines, city refuse units and bulk citrus high-
lifts. In addition, he adapted and improved upon a number of other
mechanical systems, including wind machines for citrus grove cold


protection. He renamed his business Killebrew Manufacturing and,
in the mid-70's, sold the business to Crown Industries where he
and his son, Sam, Jr., continued to work as president and general
manager. In 1984, the operation was sold to Gallyan Equipment
Company, which is still in business today.
"It was a tremendous contribution to the citrus industry in
terms of cost savings alone," said Lisa Rath, Florida Citrus
Processors Association. "In 50 years, no one has improved upon
his methods of moving bulk fertilizer from the plant to the field."
Bob Barben, an Avon Park citrus grower and Selection
Committee member agrees. "Anybody who ever rode on the back
of a spreader and dumped it [fertilizer] in really thanks Mr. Killebrew!"
he said with a laugh.
Killebrew is survived by his wife, Barbara Brown, two sons,
Burt Killebrew and Sam Killebrew, Jr., and three grandchildren.


_ I I ~I


~





_____ 6

NEWS ROUN CRE


CREC Welcome
Matt Bagley OPS (Dr. Buker)
Joshua Mathias OPS (Dr. Albrigo)
Amy Lane Sr. Bio. Scientist (Dr. Childers)
Eliud Keverenge OPS (Dr. Buker)
Dr. Francisco (Paco) Sanchez Postdoc (Dr. Syvertsen)
Eva Maria Ras-Ruiz Visiting scientist (Dr. Syvertsen)
L.E. Tomlinson OPS (Dr. Echeverria)
Amanda Parker OPS (Dr. Grosser)
Baylis Carnes OPS (Dr. Syvertsen)
Thomas Graham (Dr. Wheaton/K. Morgan)
Gwen Lundy OPS (Dr. Goodrich)

CREC Farewell
Angela Grant (Dr. Nigg)
Glenn Craddock Facilities (R. Hoover)
Denise Reel (Dr. Albrigo)
Megan Crum (Dr. Nigg)
Kenneth Hagan (Dr. Albrigo)

,O Congratulations
to rodeo rider Drew Flynn, son of
Word Processing's Karla Flynn. He is
pictured (left) with his "Most Im-
proved Steer Rider" trophy. Drew
rides steers in the Combee Arena
Rodeo once a month in Lakeland. He
is also wearing his 2002 Rodeo Finals
belt buckle, his 7th belt buckle since
he started riding sheep, then calves,
and now steers. Drew received the
awards at a rodeo awards banquet in
Lakeland. Mama is happy for him,
although she wishes he would pick a
less dangerous sport.


Phone Questions

CREC's new Cisco IP Phone system and digital service is up and
running. Our phone numbers remain (863) 956-1151 for Central
Switchboard, and (863) 956-4311 to reach our "automated atten-
dant." The automated attendant allows you to dial extensions
directly or search for names if the extension number is unknown.
CREC/IFAS extension numbers are now 1 + old extension number.
The CREC Switchboard extension is 1011.
FAQs: Mike Armstrong has posted answers to "Frequently
Asked Questions" about the phone system on the website at
\\tangelo\public\documents\VoIP-QA3.rtf.
Suncom: CREC is accessible via these 4 direct Suncom lines:
515-8913: Central switchboard; basic automated
attendant when the switchboard is unattended;
515-8921: Automated attendant;
515-8930: Center Director's office;
515-8931: Business Office FAX.
Dial-in access: For those that dial-into C RE C s network from
home or other remote locations, note that the 956-342X dial-in
numbers are out of service until further notice. Dial-in access
should be directed to 956-5899. Alternatively, you may be
interested in the Florida Information Resource Network's (FIRN)
dial-up service for state faculty, staff and students. For more
information, visit http://www.firn.edu/about/services/.


Facilities News
A copy of the 4th Edition of the UF Faculty Guide: Providing
Service and Access to Students and Employees with Disabilities
in Higher Education Reasonable and Effective Accommoda-
tions" is available in the CREC Facilities office (Sherry
Cunningham). It will also be posted on the web at
www.ada.ufl.edu in mid-February.


Manuscripts Submitted to the Publications Committee in January -
G Barry, W. S. Castle, and F. Davies. Soluble Solids Accumulation in 'Valencia' Sweet Orange as Related to Rootstock Selection and
Fruit Size. Journal of the American Society for Horticultural Sciences.
K-R Chung, M. E. Daub, and C. Schuller. The CRG1 Gene Required for Resistance to the Singlet Oxygen-generating Cercosporin Toxin
in Cercospora nicotianae Encodes a Putative Fungal Transcription Factor. Biochemical and Biophysical Research Communication.
C. C. Childers, J. V. French, and J.C.V. Rodrigues. Brevipalpus californicus, B. obovatus, B. phoenicis, and B. lewisi (Acari:
Tenuipalpidae): A Review of Their Biology, Feeding Injury, and Economic Importance. Experimental andAppliedAcarology.
J.C.V. Rodrigues, E. W. Kitajima, C. C. Childers, C. M. Chagas, and M. A. Machado. Citrus Leprosis. Experimental andApplied
Acarology.
L. R. Parsons. New Book on Water and Citrus. Florida Grower
T. Satyanarayana, S. Gowda, M. A. Ayllon, and W. O. Dawson. Frameshift Mutations in Infectious cDNA Clones of Citrus Tristeza
Virus: A Strategy to Minimize the Toxicity of Viral Sequences to Escherichia coli. Journal of Virology.
C. C. Childers, J.C.V. Rodrigues, and W. C. Welbourn. Host Plants of Brevipalpus californicus, B. obovatus, and B. phoenicis (Acari:
Tenuipalpidae) and Their Potential Involvement in the Spread of One or More Viral Diseases Vectored by These Mites. Experimental
and Applied Acarology.
Accepted: Read, J.J., E.L. Whaley, K.R Reddy, and L.Tarpley. 2003. Evaluation of a hand-held radiometer for field determination of
nitrogen status in cotton. p. 000-000. In, Digital Imaging and Spectral Techniques. Applications to Precision Agriculture and Crop
Physiology. CSSA, Madison WI (accepted Jan. 2003).






7-


CREC Spring Seminar Schedule

Seminars are open to all personnel and open to the public.

Tuesday, Feb. 4,2003 CREC, BHG 1; 11 am 12 noon (refreshments, 10:45 am)
Dr. Jim Syvertsen, University of Florida Professor of Plant Physiology, Citrus Research and Education Center, Lake Alfred, FL.
"Tree Canopy Microclimate and Fruit Load Effects on Photosynthesis and Carbohydrates in Citrus Leaves."
Dr. Jim Syvertsen conducts research in the area of environmental stress physiology. His program interests include stress effects of light
radiation, temperature, drought, nutrient deficiency and salinity on tree responses such as photosynthesis, water use, growth, fruit
yield and quality.



Thursday, Feb. 20, 2003 note date change to Thursday CREC, BHG 1; 11 am 12 noon (refreshments, 10:45 am)
Dr. Hong Li, University of Florida, CREC.
"Spatial and temporal soil variability management using GIS and remote sensing technology."
Dr. Li is a postdoctoral scientist working with Drs. Jim Syvertsen and Arnold Schumann of soil and crop management using precision
agriculture and related technology. Dr. Li earned her Ph.D. from soil fertility/plant nutrition at Laval University in Canada in 1997. Prior
to coming to CREC last year, she worked at Texas A&M University and North Carolina State University on precision agriculture,
variable rate N applications, geographic information System (GIS), remote sensing, geostatistics, and simulation modeling plant growth
and N balance to increase water and nitrogen use efficiency for several crops including potato, oats, cotton, wheat, and soybean.

Tuesday, Feb. 25,2003 CREC, BenHill Griffin, Jr. Citrus Hall Room 1; 11 am 12 noon (refreshments, 10:45 am)
Dr. Jackie Burns, University of Florida Professor of Horticulture, CREC.
"Promising Abscission Compounds of the Abscission Program."
Dr. Jackie Burs, who works in the area of postharvest physiology, will present a seminar about her research on fruit, leaf and flower
abscission and abscission compounds to facilitate mechanical harvesting for citrus.
Dr. Burs'Abscission website: http://www.lal.ufl.edu/abscission/al-team.htm


March 18,2003 CREC, Ben Hill Griffin, Jr. Citrus Hall Room 1; 11 am 12 noon (refreshments, 10:45 am)
Dr. Robin Stuart, University of Florida Sr. Biological Scientist, CREC.
"Ant Predation and Biological Control of the Citrus Root Weevil, Diaprepes abbreviatus."
Dr. Robin Stuart is a Senior Biological Scientist who has been working with Dr. Clay McCoy since 2000 on Diaprepes root weevil
management. Originally from New Brunswick, Canada, Dr. Stuart earned his Ph.D. in Zoology from the University of Toronto. His
research experience includes studies on ant behavioral ecology at Harvard University, population biology and behavioral genetics at
the University of Vermont and University of California Davis, and entomopathogenic nematodes and egg parasitoids for biological
control of insect pests at the Rutgers University Blueberry and Cranberry Research Center.


March 25,2003 CREC, Ben Hill Griffin, Jr. Citrus Hall Room 1; 11 am 12 noon (refreshments, 10:45 am)
Dr. Jim Graham, University of Florida Professor of Soil Microbiology, CREC
"Integrated Management of Citrus Canker: Lessons from South America."
Dr. Jim Graham's area of research involves the microbiology of citrus and citrus soils, including the study and management of
pathogens such as Phytophthora spp. and Xanthomonas, the causal agent of citrus canker. His work on citrus canker includes studies
on the survival, spread and identification of strains in Florida and elsewhere.



Tuesday,April 1, 2003 CREC, BenHill Griffin, Jr. Citrus Hall Room 1; 11 am 12 noon (refreshments, 10:45 am)
Mr. Norman Nehmatallah, University of Florida M. S. graduate student in Food Science with Dr. Robert Braddock, CREC.
"Capillary Electrophoresis and HPLC Determination of Polyglutamyl Folates in Citrus Products."
Mr. Norman Nehmatallah is working towards a University of Florida M. S. in Food Science with Dr. Robert Braddock. A native of
Leamington, Ontario, Canada, Norman has a B.S. in Food Science and Human Nutrition from UF His research involves developing
methods for the detection and quantification of folate in citrus.











February 2003


Sun Mon Tues Wed Thurs Fri Sat


1







2 3 4 5 6 7 8
Plant Path &
Seminar Friends 11 am
Dr. Syvertsen
11 am BHG 1
Citrus Pest Mgt
Class 3-6 pm

9 10 11 12 13 F14 15
Time cards Plant Path&
Time cards supervisors Friends 11 am
P due Mtg 8:30 am

Citrus Pest Mgt
Class 3-6 pm

16 17 18 19 autyMt20 21 22
Florida Rural Seminar Plant Path &
Water Assoc. Dr. Hong Li Friends 11 am
meeting 11 am BHG 1
Citrus Pest Mgt
__ Class 3-6 pm


23


24
Time cards
P due


25
Seminar
Dr. Jackie Burns
11 am


26


27


Citrus Pest Mgt
Class 3-6 pm


Plant Path & 0
Friends 11 a
3 pm Exchange
Fair & Ice
Cream Social


All events subject to change.
February 2003


4- Seminar, Dr. Jim Syvertsen, CREC.
"Tree Canopy Microclimate and Fruit
Load Effects on Photosynthesis and
Carbohydrates in Citrus Leaves." 11
am 12 noon (10:45 refreshments),
BHG1.
12 Supervisor's Meeting, Dr. H. Browning.
8:30 -10:30 am, Packinghouse Conf.
room.
17 Citrus Research and Educ. Foundation
meeting. 10 am, Packinghouse Conf.
room.
18 Florida Rural Water Assoc., "Focus on
Change" seminar. Drinking water and
wastewater utilities. BHG 1-2, 3-4. All
day.
20 Faculty meeting, Dr. H. Browning. 8:30 -
10:30 am, BHG 3-4.
20 Seminar, Dr. Hong Li, CREC. "Spatial and
Temporal Soil Variability Management
Using GIS and Remote Sensing
Technology." 11 am 12 noon (10:45
refreshments), BHG 1.
25 Seminar, Dr. Jackie Burns, CREC.
"Promising Abscission Compounds of
the Abscission Program." 11 am 12
noon (10:45 refreshments), BHG 1.
28 Surplus Supplies Exchange Fair and Ice
Cream Social. 3 pm, employee break
room, building 24. See p. 1 for details.


Classes at CREC
This Semester:
PMA 5205, Citrus Pest Management, Thurs.
3-pm, Dr. Duncan. BHG Teaching Lab.


I I I




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