Title: Citrus leaves
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00087049/00072
 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: December 2006
 Record Information
Bibliographic ID: UF00087049
Volume ID: VID00072
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.


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Staff Meeting,
Holiday Party
The Center Staff
Meeting will be held
Friday, Dec. 15 at 3 p.m.
immediately followed by
the Annual CREC
Holiday Party, BHG, Jr.
Citrus Hall. The evening
begins with drinks and
snacks followed by a
Chinese dinner.
Entertainment begins at
6:30 p.m. There will be a
Dessert and Appetizer
Contest. All personnel,
current and retired, and
their immediate families
or a special guest are
invited. For more info or
to RSVP, call Jill Dunlop
at ext. 1283.
Also, CREC-related
photos are needed for the
video to be shown during
the party. Please put
photos in x:\2006 Photos
for Christmas Video as
soon as possible.

Send List of
Essential Personnel
CREC will be closed
Dec. 25 through Jan. l,
2007. Supervisors must
provide the HR Office
with a list of those
required to work during
those days. Only
personnel who have been
determined to be
"Essential Personnel" will
be authorized to work and
record payable time. The
deadline is Thursday,
Dec. 14. For more info,
call the HR Office at ext.

The Future of Citrus Is Ot of Ths World
OZCEJok INAA to increase krdtru Podcvitu

The future of citrus is
literally out of this world.
By using satellites and
space imagery, CREC
faculty members hope to
increase citrus
competitiveness by
determining needs and
detecting diseases such as
"The satellite image
analysis may provide
quicker and broader
information than a visual
tree-to-tree inspection," said
Dr. L. Gene Albrigo,
Professor of Horticulture,
UF/ IFAS, CREC. "The hope
is that a lot of things
learned in studying citrus
can be applied to other tree
crops, as well."
The satellites can monitor

tree conditions every 16
days at medium (10-20
m) or high resolution
(0.6 to 1 m), and from
those reports scientists
can determine
numerous things. The
reflectance evaluation,
using medium
resolution, can identify (F
citrus and its quality Ja
(see "Citrus and (B
eucalyptus photo on sa
page 2). This is done by
measuring the canopy size
and the health of the tree.
Using high resolution
imagery, trees can be
counted and diseases may
be detected (see "tree
counting" photo on page 2).
NASA is funding the
project along with the

'rom left) Juan Valente oMexco),
n Suckens and Ben Sommers
elgium) work as cooperators on
tellite image anaylsisproject.

Department of Citrus. Data
Star, a private company,
and CREC scientists study
and analyze images
collected and other data to
evaluate citrus trees or area
conditions and potential for
See GPSonpage2

BUG Phase I Renovations to Begn After New Year

Phase I of the
Ben Hill
Griffin, Jr.
Citrus Hall is
finished with
reworking of
CREC volunteers move books and the ceilings
journals after the new carpet was and roof; front
laid in the Library ending Phase II. entrance
* The Library ceiling, lights, and other
* West entry/EM Lab corridor new flooring,
acoustical grids, lighting, and tile;
*Teaching lab area drywall removal and

"I~-- II 4a a
* 1t: V

Phase II will begin after the first of
the year and will encompass:
* Front entrance and lobby/store
front to the Library;
* Creation of the new media center;
* Meeting rooms; Restrooms;
* Replace various walls and doors
throughout the building.

During Phase II, the Teaching Lab
and the Meeting Room will be
available with a reservation except
during the restroom renovations. No
other rooms will be offered until the
completion of Phase II in early 2007.
For more information, call Linda
Murphy or Kathy Witherington at the
Center Switchboard.

*~ ,^ 1"\EW


CW ....9

2 <^ ^ a

Volume 23, Edition 12

Dr. Harold W. Browning,
Center Director

UF/IFAS Citrus Research
and Education Center
700 Experiment
Station Road
Lake Alfred, Florida 33850
863.956.1151 (phone)
863.956.4631 (fax)

Citrus Leaves is published by
UF/IFAS, CREC in the
interest of faculty, staff, and

CREC Mission Statement:
"CREC discovers and delivers
innovative solutions that
empower citrus and other
agricultural interests to
conduct responsible and
profitable business. CREC
fosters scientific excellence
and efficient use of resources."

We welcome suggestions and
comments concerning
Citrus Leaves.
Please contact
Anita Whitaker,
Public Relations
956-1151, ext. 1233

Related Seminar Coming
Geodesy Fundamentals and
GPSP Positioning for
Agricultural, Surveying, and
GIS Applications Seminar by
Dr. Muneendra Kumar (Retired
Chief Geodesist) and Dr. Reza
Ehsani (CREC, Assistant
Professor) on GPS Pitfalls,
Geodetic Positioning, Designing
a GPS Project, GPS Surveying
and Positioning, Precision/
Repeatability and Accuracy,
Selection of a GPS Receiver,
Three Coordinate Systems,
Major Datum Systems, and
Fundamentals of Geodesy,
Tuesday, Dec. 19 from 8 a.m. 5
p.m.,$150,(Students: $50), BHG,
www.citrusprecisionag.com. For
info, call (863) 956-1151 ext.

GPS, continued from page 1
The primary objectives of the project are to
automatically determine area or trees in an
area, the health or production potential of the
trees, and considering weather, a yield
estimation based on the productivity potential
times weather effects on fruiting.
Albrigo is working on the project with Drs.
Reza Ehsani and Arnold Schumann, UF/IFAS
CREC Assistant Professors of Precision
Agriculture and Mechanical Harvesting.
There is interest in this technology all around
the world, not just here in Florida.
Belgium recently sent two graduate students,
Ben Somers and Jan Stuckens, here to work
with CREC. Although Belgium isn't concerned
with citrus per se, the country is working with
South Africa on a citrus analysis project and
they hope that the U.S.'s lessons learned will
also benefit them. A South African-Belgium
consortium is developing a medium resolution
hyperspectral satellite to be launched in 2008.
It is
that plant
water and
status (see
graph on
page 2) can
in real time
with this
CYtrus and eucalyptus in Brail. with this
"The role of our team is to see what
applications can be developed, as well as the
feasibility of it."
CREC expects to be part of the research team
using the hyperspectral satellite. Brazil (Sao
Paulo State) is also interested in the potential
of satellite image analysis in understanding

Hyperspectral: analysing the spectrogram
Dominant factor
Leaf Cell Water content controlling leaf
Pigments structure controllng lea
70 Chlorophyll Primary
absorption vWater dabUIJsrpt absorption
60 bands

0.4 0.6 08 10 12 14 16 1.8 2.0 22 2.4 26
Wavelength (pm)
Sspectral region
visible near infrared middle infrared

Hyperspectral refectance andkey physiological

Tree counting using automatedprogram
with 94percent accuracy. Each green/red
dot represents a tree.

their land area devoted to citrus
production, changes in tree health, and
improving citrus production.
The benefit of having Brazil and the
U.S. involved in the project is that the
countries are in different hemispheres,
and citrus trees are in different stages
of development at all times.
At the same time, many of the
production and disease problems are
the same. Additional interest in image
analysis of citrus comes from Mexico
also. A former UF student, Dr. Juan
Valiente, is starting a project with
CREC's assistance and is visiting this
Satellites are in place, so the major
cost is incurred with the production of
the "images," the visual and hyper-
visual information received from space.
"When we order an image we are very
specific about what we want," Albrigo
explained. "We decide what kind of test
area is needed, the cloud cover, the
time of year, and so on."
This month marks the end of Phase II
of the NASA project, a year-long phase
which was preceded by preliminary
Phase III begins after the first of the
year and, hopefully, some of the
collected imagery will be a big asset for
greening survey work.
"It is much better to have an
instrumented method (when
determining greening)," Albrigo said.
"With visual survey work, there is
always human error, fatigued workers,
and an unstable labor force. But once
you train an instrument, it's reliability
is constant."



CREC Retirements

lZr. He-r& ANq, 32 VearS
on Dr. Herb Nigg, Professor of
!. Entomology, UF/IFAS Citrus
Research and Education Center,
retired Nov. 30 after 32 years of
During Nigg's career at CREC,
his research focused primarily
on the interactions of pesticide
N.gacceptsa application and worker exposure.
'ezrticate of
ppraciation from His pioneering work in this area
r. Harold Browning, provided the scientific basis for
enter Director. managing pesticide application
and human safety issues. Later in
his career, Nigg directed his program to biological
aspects of several important citrus pests, including
Diaprepes root weevil and Caribbean fruit fly. He
worked closely with growers to address needs
associated with these pests and their impact on the
health of the industry.
In retirement, he looks forward to fishing more
often, spending time with his family, traveling, and
his entrepreneur endeavors.
During his speech at his retirement luncheon,
Dr. Nigg said, "I've been proud to work at and be a
part of the best and most famous research and
experiment center in the world."
Good luck, Dr. Nigg!

Nc-oy Mreek, 2 yec4 s

Nancy Burke, CREC's
Receptionist, retired Nov.
30 after more than 24
years here.
Originally from
Wisconsin, Nancy has five
children and two great
grandchildren. She is a
member of the First
Baptist Church of Lake
Alfred, loves Nascar,
reading, fishing, sewing,
and antiquing. She looks
forward to taking a well-
deserved vacation, Kathy Witherington Oe7i
shopping, and fishing. prsents Nancy Burke with
During her retirement gih rom the Center.
reception, Nancy thanked
everyone and said, "You all are my family."
We'll miss you, Nancy!

CREC Passes Worker Protection Safety

and Pesticide Procedures Inspection
Gary Carroll, Florida Department of
Agriculture, along with Dr. Fred Fishel, IFAS,
conducted a thorough inspection of CREC's Worker
Protection Safety programs, and pesticide storage
and handling facilities and procedures on Nov. 30.
CREC was found to be in compliance with the
vast majority of the regulations and only a few
minor deficiencies were pointed out. In many
cases, the inspectors indicated that the Center was
going beyond the minimal requirements of the
regulations and were complimented on the
professional handling of the procedures.
"We would like to thank all those who worked
hard to take care of potential problems with
storage and handling, and who participate in the
ongoing WPS training," Dr. Harold Browning,
Center Director, said.
Special thanks to Troy Gainey, Senior
Biological Scientist, for handling many of the
pesticide storage and application matters. Also,
thanks to Perry Love, Customer Service/Public
Relations, who handles WPS training. Recognition
also goes to Dr. Pete Timmer, Plant Pathologist,
the primary contact with the review process
"They did a great job, in addition to all of you
for following the proper measures when working
with pesticides," Browning said.

Just a Reminder!


All CREC Faculty and Staff

CREC faculty and staff

are reminded that all fruit

grown here on Campus

MUST go through the

packinghouse wash area.

There are no exceptions.



Tuesday Wednesday




3 4 5 6 VALICrep 7 Secret Santa 8 9
8 a.m. Luncheon
1 p.m.

Dr.CReyes CRIS Project
10 11 12 Dr Rem s 13 14 Due Staff Meetii 16
(see below) & Holiday

17 18 Faculty Meetint 20 21 22 23
GPS Workshop
(see page 2)

24 Holiday 25 26 27 28 29 30
Center Closed he week of Dec. 25-29- Happy Holidays!

Dec. 13 Dr. RA

yes will present "A
rence" Dec. 13 at 1

3ack to work on
applications of Nanol
) a.m. in the Teachi

Jack Smoot,
(on the
enjoys the
change of
leaves in

Andi Brune, who worked
- in Dr. Ed Echevernia's lab
frm 1995-1998, and his
wife, Simona Bullert, who
worked with Dr. Jude
Grosser at the same time,
with their daughter,
Leonie, at th'home in

Tuesday, Jan. 2
technology to Food.
ig Lab, BHG with i

nightss from the N
refreshments at 9:45

mo4Food 2006


Dr. Larry Duncan gives
Denise Dunn a hug at her
farewell party on Nov. 27
Dunn accepted a position as a
research leader in Melbourne,
Florida. She willhelp to
develop naturalproduct
insecticides and repellents.

Shelby Flnn, daughter of
Karla, PR/WP, was inducted
into the National Honor
Society of the International
Baccalaureate Schoolin
Bartow on Nov. 7



Happy 2007!

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