• TABLE OF CONTENTS
HIDE
 Front Cover
 Front Matter
 Table of Contents
 Introduction
 List of program leaders
 Strawberry breeding program
 Plant pathology
 Entomology
 Postharvest
 Weed control
 Seedling trial
 Variety trial
 Row trial
 Plug transplants trials
 Plant source comparison
 Non-Fumigated soil tolerance...
 Fungicide evaluation trial
 Control of Botrytis Cinerea (Gray...
 Large plastic tunnel experimen...
 Response of strawberry flavor to...
 Summer cover cropping x nematode...
 Acknowledgement
 Back Cover














Title: Strawberry field day
ALL VOLUMES CITATION THUMBNAILS PAGE IMAGE ZOOMABLE
Full Citation
STANDARD VIEW MARC VIEW
Permanent Link: http://ufdc.ufl.edu/UF00076494/00011
 Material Information
Title: Strawberry field day
Series Title: Dover GCREC research report
Alternate Title: Strawberry field day program
Physical Description: v. : ; 28 cm.
Language: English
Creator: Agricultural Research Center, Dover
Agricultural Research & Education Center (Dover, Fla.)
Gulf Coast Research and Education Center (Dover, Fla.)
University of Florida -- Institute of Food and Agricultural Sciences
Publisher: Agricultural Research Center, Institute of Food and Agricultural Sciences
Place of Publication: Dover Fla
Publication Date: 1997
Copyright Date: 1997
Frequency: biennial
regular
 Subjects
Subject: Strawberries -- Periodicals -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
 Notes
Issuing Body: Volumes for 1985-1993 published by Agricultural Research & Education Center, Dover, Fla. ; Volumes for 1995- published by Gulf Coast Research and Education Center, Dover.
General Note: Description based on: 1973; title from cover.
General Note: Latest issue consulted: 1995.
 Record Information
Bibliographic ID: UF00076494
Volume ID: VID00011
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 143121533
lccn - 2007229035

Table of Contents
    Front Cover
        Page i
        Page ii
    Front Matter
        Page iii
    Table of Contents
        Page iv
        Page v
    Introduction
        Page 1
    List of program leaders
        Page 2
    Strawberry breeding program
        Page 3
    Plant pathology
        Page 4
        Page 5
    Entomology
        Page 6
    Postharvest
        Page 7
    Weed control
        Page 8
        Page 9
        Page 10
    Seedling trial
        Page 11
    Variety trial
        Page 12
    Row trial
        Page 13
    Plug transplants trials
        Page 14
        Page 15
    Plant source comparison
        Page 16
    Non-Fumigated soil tolerance trial
        Page 17
    Fungicide evaluation trial
        Page 18
    Control of Botrytis Cinerea (Gray Mold) Fruit Rot by Sanitation
        Page 19
    Large plastic tunnel experiment
        Page 20
    Response of strawberry flavor to twospotted spide mite feeding
        Page 21
    Summer cover cropping x nematode study
        Page 22
    Acknowledgement
        Page 23
        Page 24
    Back Cover
        Page 25
        Page 26
Full Text

2V ?1-/

Dover GCREC Research Report DOV 1997-1




STRAWBERRY FIELD DAY PROGRAM


February 19, 1997


C.K. Chandler, D. E. Legard, and W. E. Waters, Editors


H. UNIVERSITY OF
' FLORIDA
Agricultural Experiment Station
Institute of Food and Agricultural Sciences














A B C well
and
pump


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Greenhouses


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LEWIS GALLAGHER ROAD


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GULF COAST RESEARCH & EDUCATION CENTER
INSTITUTE OF FOOD AND AGRICULTURAL SCIENCES:
UNIVERSITY OF FLORIDA

13138 Le*is Gallagher Road
Dover, Florida 33527-9664

STRAWBERRY FIELD DAY
Wodnesday, Fobnmry 1% 1997

Contact Person. Dr. Craig Chandler,
..................... ....

NIODERATOR, FIELD DAY HOST: Suzatwie Cady, Hibborough County Extension

Tirne,, M

2:00 Dr, W.E. Waters, Welcome and Introductory Comments
2:06 Dr. C. K Chandler, Ct&" update
2,15 Dr. T. E. Crocker, Advanced feeng PrOgrara
2:26 Dr. D E. -Legard, Ahwd for a ceffified plant program
2:45 Dr.- J. K Brecht Inthwme ofpostharvest.femperature and atmosphere on
fib* quality
3:05 Mr. Eric Sish,' Performance of plug transplants
3:20 Mr. Ronnie Youn GrowerAResearch Center coopemfion
3:30 Dr. J. F. Price, Announcement of the:,1997. pest managenmntmorkshop
3:35 Refreshments
3:40 Tour of research plots

Methyl Blromide alternatives J. Noting, J.P. Gilreath, D.E. Legard
Mite management J.F. -Price
Plant Pathology D.E. Legard
Plant Breeding CK Chandler, P.J. Lopez
Culture E.B. Bish, S. Cady


For indlWImle with dMbUllim, requiring special a"`ommqdatiorts, please witlact, Dr. Craig Chandler at the
abow address (813113%-2801) withIn 72 hours'priot tiD'the field dayso that proper oonskWation may be
to the requW.









TABLE OF CONTENTS


Page

W welcome and Introduction ................................................. .................. 1
List of Program Leaders.............................. ............... .......................... 2
U S P S E m ployees.................................................................................. .... 2



SECTION I

STRAWBERRY RESEARCH ACCOMPLISHMENTS

STRAWBERRY BREEDING PROGRAM
Strawberry Breeding and Genetics Program -
C.K. Chandler and D.E. Legard.................................... .......... 3
PLANT PATHOLOGY
Plant Pathology Program D.E. Legard, A.J. Whidden, K.C. Burke,
A. Urena, and C.K. Chandler............................... ........... 4

ENTOMOLOGY
M ite Management J.F. Price.......................................................... 6

POSTHARVEST
Postharvest Physiology and Technology J.K. Brecht...................... 7

WEED CONTROL
Strawberry Weed Control J.P. Gilreath................................... 8






SECTION II
FIELD TOUR
Page

Seedling Trial C.K. Chandler....................................................... 11

Observational Trial C.K. Chandler and J.C. Sumler, Jr. ....................... 11

Variety Trial C.K. Chandler, D. E. Legard, and J.C. Sumler, Jr.............. 12

Row Trial C.K. Chandler and J.C. Sumler, Jr........................................ 13

Inheritance of Earliness Trial P.J.S. Lopez and C.K. Chandler ............ 13

Plug Transplant Trials E.B. Bish, C.K. Chandler, and D.J. Cantliffe....... 14

Plant Source Comparison S.W. Cady, C.K. Chandler,
D. E. Legard, and J. F. Price...................... ......................... 16

Non-Fumigated Soil Tolerance Trial C.K. Chandler, D.E. Legard,
J.W. Noling, and J.P. Gilreath...................................... ........... 17

Fungicide Evaluation Trial D.E. Legard, A.J. Whidden and
K.C Burke...................................................... ........................... 18

Control of Botrytis Cinerea (Gray Mold) Fruit Rot by Sanitation -
D.E. Legard, K.C. Burke and A.J. Whidden..................................... 19

Large Plastic Tunnel Experiment D.E. Legard, A.J. Whidden,
C .K C handler.......................................................................... 20

Row Spacing Trial D.E. Legard, A.J. Whidden, C.K Chandler ............. 20

Response of Strawberry Flavor To Twospotted Spide Mite Feeding -
J. F. Price...................................................... ............... . ........... 21

Response of Twospotted Spider Mites To New Miticides -
J.F. Price................................................................ ........ . ......... .... 21

Summer Cover Cropping X Nematode Study -
J.W. Noling, J.P. Gilreath, C.K. Chandler, and D.E. Legard............. 22

Acknowledgements........................................ .......................... 23






WELCOME AND INTRODUCTION


W. E. Waters, Center Director

On behalf of the faculty and staff, I extend to each of you a most cordial
welcome to the Dover Gulf Coast Research and Education Center Field Day.
The Center was initiated in 1927 as a one-man operation located southeast
of Plant City. In 1963, the Center was moved to its present location, and the
programs were expanded. This unit and the affiliated Center located in
Bradenton, is a Research and Education unit of the University of Florida's
Institute of Food and Agricultural Sciences.

In Dover and Bradenton, 7 research scientist participate in strawberry
research programs. Each research scientist also holds a joint appointment
with his subject matter department at the University of Florida. This
combination of a broad base of research disciplines, industry contacts and
an excellent faculty makes the interdisciplinary cooperative team approach
to research problems far more productive than could otherwise be
accomplished with limited investments in independent programs.

The overall mission of the Center deals directly with the strawberry industry
in Florida through research programs in (1) genetics, breeding and cultivar
development and evaluation; (2) biological, chemical and mechanical pest
management for diseases, insects, nematodes, and weeds; (3) production
efficiency, culture, fertilization, management and environmental stress; (4)
mechanization, harvesting, handling, and postharvest physiology systems;
(5) water management and conservation; (6) advancement of basic
knowledge of the various scientific disciplines represented by the faculty;
and (7) assistance to the cooperative extension service, departments in the
College of Agriculture and other research centers with extension, educational
training and cooperative research programs for the benefit of producers,
consumers, and students.

Information presented in this publication summarizes the active research and
extension projects under way this season on strawberries. We sincerely
appreciate your interest and support of these programs, and continuously
solicit your suggestions for improvement. We welcome input concerning
industry needs to keep our research and extension programs productive.







CURRENT LIST OF PROGRAM LEADERS, APPOINTMENT DATE,
AND AREA OF SPECIALIZATION AND LOCATION


Albregts, Earl E.



Brecht, Jeffrey K.


Chandler, Craig K.



Crocker, Tim E.


Gilreath, James P.



Legard, Daniel E.



Noling, Joe W.



Price, James F.



Waters, Will E.


1967. Professor Emeritus. Soil Scientist. Soil and plant
nutrition and culture of strawberry and vegetable crops,
GCREC-Dover.

1984. Professor. Postharvest Physiologist. Postharvest
physiology of fruit and vegetable crops.

1987. Associate Professor. Geneticist and Plant Breeder.
Local administration, genetics, plant breeding, and
development of strawberry cultivars, GCREC-Dover.

1975. Professor. Horticulturist. Extension fruit crops
specialist.

1981. Associate Professor. Horticulturist. Weed control
of vegetable, ornamental and strawberry crops, GCREC-
Bradenton.

1995. Assistant Professor. Plant Pathologist. Etiology
and control of strawberry and vegetable diseases,
GCREC-Dover.

1985. Associate Professor. Nematologist. Identification,
biology, and control of nematodes affecting fruit and
vegeatble crops.

1978. Associate Professor. Entomologist. Identification,
biology and control of insect and mite of ornamental and
strawberry crops, GCREC-Bradenton.

1960. Professor. Horticulturist and Center Director.
Administration, soil and plant nutrition, and horticulture,
GCREC-Bradenton.


UNIVERSITY SUPPORT PERSONNEL SYSTEM STAFF


Annie F. Turgeau
Alicia J. Whidden
James C. Sumler, Jr.
Kelly Burke
Larry J. Smith
Frederick D. Wenzel
Gaylin Bryson


Secretary
Biological Scientist
Biological Scientist
Biological Scientist
Farm Supervisor
Senior Agricultural Assistant
Agricultural Assistant








STRAWBERRY BREEDING AND GENETICS PROGRAM


C.K. Chandler and D.E. Legard

'Sweet Charlie'. 'Sweet Charlie', UF/IFAS's first patented strawberry cultivar now
occupies close to 40% of the Florida strawberry acreage, and is helping to
improve Florida's reputation as a provider of flavorful winter strawberries.
Graduate student Eric Bish is continuing to evaluate pre and post
transplant conditioning treatments with 'Sweet Charlie' in an effort to
identify techniques that will maximize this cultivar's early season yield of
high quality fruit. Eric's goal is to find treatments that will result in the
production of 1000 flats of fruit per acre by the end of December. This
level of early production, if it can be obtained consistently, will have a
tremendously positive impact on the industry.

'Rosa Linda'. FL 90-15 was released as a new cultivar during the summer of
1996, and was named 'Rosa Linda', which means pretty rose in Spanish.
FL 90-15 was released primarily because of its desirable fruiting pattern,
attractive, aromatic fruit, and vigorous plant growth habit and is not
particularly susceptible to any serious pest or disease. A U.S. patent has
been applied for on 'Rosa Linda'. We expect 'Rosa Linda' to complement
'Sweet Charlie' in the marketplace, and provide buyers with another
attractive, flavorful strawberry during the winter months.

Seedlings and selections. Approximately 10,000 new seedlings were evaluated
in a fruiting field trial during the 1995-96 season. Three hundred and fifty
five of these seedlings were selected for inclusion in future clonal trials. FL
89-123 x Oso, FL 90-15 x Cuesta, FL 90-15 x Oso, FL 90-15 x FL 93-53,
and FL 90-15 x FL 93-49 were the crosses that produced the highest
percentage of seedlings with acceptable fruit quality. One hundred and
thirty five selections were evaluated in an observational (stage 2) trial
containing one 10-plant plot per selection. FL 93-100, FL 93-109, FL 93-
113, and FL 93-163 ( all offspring of FL 90-15 x FL 90-38) had high early
season yield, total yield, and received high marks for fruit attractiveness.
They will be evaluated more extensively during the 1996-97 season.

Genetic studies. Graduate student Pam Lopez (from the Philippines) and visiting
scientist Jose Lopez Medina (from Spain) have been working with me on
quantitative genetic studies that I hope will lead to greater efficiencies in
the breeding program.








PLANT PATHOLOGY PROGRAM


Dan E. Legard, Alicia J. Whidden, Kelly C. Burke, Alvaro Urena,
and Craig K. Chandler

The Strawberry Plant Pathology Program has both research and extension
components. Due to the severity of diseases on strawberry, there are many
different areas on which our program is focusing. All of our research is aimed at
developing a better understanding of diseases on strawberry and the development
of improved control strategies.

We run a strawberry disease diagnostic clinic that evaluates several hundred
samples a year. This service identifies disease problems and provides
recommendations to strawberry growers, industry representatives and strawberry
transplant producers in Florida and from throughout the eastern United States and
Canada. Up to date disease control recommendations are provided through
individual consultations with growers and industry representatives and through
farm visits, grower meetings and field days. Current and future disease control
products are regularly evaluated through fungicide efficacy trials and their results
relayed to growers and industry representatives.

One of the most important tools for studying diseases is the establishment of a
culture collection of the pathogens to provide material for greenhouse and
laboratory studies. We have isolated, characterized, identified, and stored a large
collection of fungal pathogens from strawberry in Florida. We have developed
a new procedure for storing these cultures in 10% glycerol at -95C. Freezing of
cultures in this manner allows us to keep them years with a minimum of
maintenance.

We have identified fungicides suitable for control of Phomopsis leaf blight in
strawberry nurseries. Phomopsis obscurans causes the most serious foliar
disease of strawberries in summer nurseries in Florida. A replicated fungicide
efficacy trial conducted from June to September, 1995, revealed that weekly or
biweekly applications of Captan provided the best control of leaf blight of all
labeled fungicides. Three new unlabeled sterol biosynthesis inhibitors
(propiconazole, tebuconazle, and myclobutanil) provided outstanding control of
leaf blight. All three products significantly reduced the ability of the pathogen to
cause disease on strawberry and provided greatly improved control over all the
labeled products including Captan. One of these fungicides (myclobutanil) is
expected to receive an emergency use label for control of powdery mildew on
strawberry early in 1997.

At least four serious diseases of strawberry in Florida anthracnosee, powdery
mildew, angular leaf spot and leaf blight) are most commonly introduced into fields
on diseased transplants at setting time. The best way to control these diseases








is to prevent their introduction into the field. Therefore, we have initiated a
collaborative program to evaluate the production of disease-free certified
strawberry transplants in Colorado. This will allow us to determine if it is possible
to eliminate pathogens from transplants used by the Florida strawberry industry,
thereby significantly reducing the losses to these diseases.

Through a collaboration with Dr. Nigel Harrison at the Ft. Lauderdale REC, we
have identified several phytoplasma diseases on strawberries in Florida. Although
it appears most of these problems are due to infections developing in nurseries
in Canada, we have found some phytoplasma infected home grown strawberry
plants. Additional work is needed to further characterize these diseases and
develop improved control strategies.

We have established a collaborative research program with the postharvest
research group at University of Florida in Gainesville to study the preharvest and
postharvest effect of different disease control programs. From this collaboration
we have found that sanitation (ie. the removal of old foliage and unmarketable fruit
from within the field) in combination with fungicide applications, will reduce
preharvest and postharvest losses to gray mold (Botrytis cinerea).








MITE MANAGEMENT


J. F. Price


Predator Survival from Nursery to Fruiting Location. Transplants were
infested with twospotted spider mites and Phytoseiulus persimilis predators and
were placed into 40F coolers for 0-12 days to simulate shipping and preplant
storage. About 64% of the predators survived 5 days and about 38% survived 12
days. This indicates that predators residing on transplants could be placed into
the fruiting field along with the transplants and possibly could eliminate the need
for releasing additional predators in the fruiting field.

Compatibility of Fenbutatin-oxide (Vendex) Miticide with use of Predator
Mites. Six weekly applications of fenbutatin-oxide were made to an established
population of twospotted spider mites after Phytoseiulus persimilis predators were
released. The miticide apparently did not reduce the effectiveness of the
predators.

Effects of AC303.630 Miticide on Phvtoseiulus persimilis Predators. A single
dose of AC303,630 miticide at 0.1 and 0.2 Ib ai/A to twospotted spider mites and
predators in the field reduced Phvtoseiulus persimilis predators by less than 50%.

Miticides for control of Twospotted spider mites. Programs of Agri-Mek,
Brigade, their alternations, Mattch (Bacillus thuringiensis) with M-Pede soap and
of Triact (neem oil)(at weekly intervals and not at 14 day intervals) resulted in
good control of twospotted spider mites. Triact was phytotoxic to the strawberry
plants.












POSTHARVEST PHYSIOLOGY AND TECHNOLOGY


Jeffrey K. Brecht

Postharvest Physiology of Strawberries as Influenced by Temperature and
Atmosphere. This research was conducted by Dr. Cecilia Nunes as part
of her joint Ph.D. degree program between the Escola Superior de
Biotecnologia, Porto, Portugal, and the University of Florida, Gainesville.
Cooperators were Dr. A.M.M.B. Morais, her supervisor at ESB, and Drs.
J.K Brecht and S.A. Sargent at UF. We found that a 6-hour delay at 86F
before precooling 'Chandler', 'Oso Grande' and 'Sweet Charlie'
strawberries to 34F resulted in greater water loss, decreased firmness,
darker and less bright fruit color, lower sugar, acid and vitamin C levels,
and increased incidence and severity of decay. These differences were
still apparent even after a simulated holding/shipping plus retail display
period of 7 days at 34F plus 1 day at 68F. We further investigated the
effects of temperature management and water loss on vitamin C levels in
the same strawberry varieties. Ranges of vitamin C losses among the
three varieties over 8 days were 20 to 30% at 34F and 30 to 50% at 50F,
while losses ranged from 55 to 70% in 4 days at 68F. Wrapping the
baskets with PVC film to reduce water loss cut the vitamin C losses to 13%
or less at 34F and 50F, and to 20 to 45% at 68F. These results indicate
that even short periods at ambient temperatures, especially without control
of water loss, could result in significant losses of vitamin C from
strawberries. The third area of research concerned the use of modified
atmospheres (MA) for shipping strawberries. The main benefit of MA
(Tectrol) for strawberries has always been considered to be control of
decay, and this benefit is most apparent when temperature management
breaks down and strawberries are shipped at above optimum temperatures.
We found considerable additional benefit from MA at above optimum
temperatures with regard to strawberry fruit quality. 'Chandler' strawberries
stored in MA at 39F or 50F for 1 or 2 weeks plus 1 day at 68F were firmer,
brighter, and had higher soluble solids, acidity and vitamin C levels than
fruit held in air. Decay was also inhibited and we found that this was due
to a combination of direct suppression of pathogen growth and inhibition
of fruit senescence. Three-quarter red fruit benefited more from MA than
full red fruit.







STRAWBERRY WEED CONTROL
J. P. Gilreath

1996 Season Research. Weed control research in strawberry has focused on
both herbicide and soil fumigant efficacy. A herbicide trial was conducted during
the 1995-96 season to evaluate Devrinol, Goal, Princep, Sinbar, and Zorial
(Solicam) when applied preplant incorporated versus preemergence on the soil
surface. These herbicides were the most promising from the work done during the
previous season. Strawberry plant vigor and plant growth (crown diameter and
number of runners) were not affected by herbicide whether preplant incorporated
or sprayed on the soil surface (preemergence). Weed distribution was erratic and
only carolina geranium was present in sufficient quantity to determine control
efficacy. Soil incorporation improved control with Devrinol, Goal, and Princep, but
not with Sinbar or Zorial. Herbicide had little effect on yield; Sinbar applied
preplant incorporated produced more marketable fruit than preemergence
application of Princep.

Available alternatives for methyl bromide were evaluate during the 1995-96
season for soil-borne pest control and crop response. Strawberry plant vigor was
improved with all fumigants compared to the nontreated control. Vigor was not
affected by fumigant when compared to methyl bromide; however, plants grown
in soil treated with Telone C-17 were less vigorous than those from areas treated
with chloropicrin. Plant crown diameters, measured on 12 January 1996,
responded similarly to vigor. Plants grown in soil treated with Vapam incorporated
with a rototiller had larger crowns than those receiving Vapam via chemigation.
Runner production was increased with fumigation 65 when determined 65 days
after planting, indicating the improvement in plant vigor. Chloropicrin, Vapam
incorporated with a rototiller, and Telone C-17 produced more runners than methyl
bromide or chemigation application of Vapam.

The three principal weeds present in this test were cutleaf evening primrose,
carolina geranium, and cudweed, based on counts of the number of plants
emerged through the plant holes in the mulch film. Weed populations were not
uniform across the test area. Cutleaf evening primrose and cudweed were
controlled equally well by all of the fumigants when evaluated 65 days and 23
weeks after application. Carolina geranium populations were not affected by
fumigant treatment.

1997 Season Research. Based on the results of this fumigant experiment and
herbicide labeling and efficacy for strawberry, the fumigant experiment in 1996-97
was designed to incorporate a herbicide to provide the weed control that fumigant
alone does not provide. The herbicide chosen for this experiment was Devrinol
and it was incorporated into the bed with a rototiller prior to fumigant application.
Chloropicrin, Telone C-17 and Telone C-35 were combined with Devrinol and are
being compared to methyl bromide for weed control, crop response, and nematode
control.







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SEEDLING TRIAL



Ia I lst ar4 mi ddls fruting l s

Qkim a.e 'To select mndllngswith large, attractive, and flm fruit.

QS Ovation: Oe or 2 plants each abtaout 10,000 seedlings were planted m
S:. November. Tf pl ant are s erved e, thoe
sh i t desired .. -d iarM flaged
: : .T. .. rid ::: I ... . :. .





O ERVATOATRIAL
o r .. . . ... .
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R ipe kitmre hwves t@ tice weiildy and th orlme of frit
. . .. ' ^ * . ""










idei, ,.dos that .o mo rit e ri atd for app d tn e,





and note are taken peodical denies with desirable "plant
," :. .e. . .a .. . . **... *







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Q Transplant runner regulation, conditioning (temperature)

Objective: Deterrnine how runner growth and conditioning (pre-
transplmt temperature) aff*xA runner growth affect runner
development, flowering and fruiting pattern of the cultivar Sweet
Charlie.

K Transplant generation, runner regulation, conditioning
(temperature)

Ob*cfive.Detennine hcw gamrsition from nticropropation, regulation
of runrw growth, and corditioning (pre-transplant ternpeiwture) affect
runner development f1menng, and fruiting pattern of the cultivar
sweet Charlie.

1, Transplant crown numbsr, propagation method, conditioning
(teMperature)

Objecfive. Determine tow mufti-croed potted twsp4ants and
conditioning (pre-trarutplerft temperature) affect runner developrmnt,
flowering, and fruiting pattern of the the, cultivar Sweet dharfie.
(Pianft date: 10-10-96)

J. Commercial plug transplants

Objective.Evaluate the peffornwim of commercial plug transplants
from different productiort reWm and dilIerent cuPdvars (Sweet Charke,
Rosa Unda, and FL 93-100). Pianting date: 10- 10-96.





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NONMIAD TOLERANCE TRIAL
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Objective To deten ine if some stra .fry cultivar are .more tolerant ..
.i non4umgated soil e. nv .inm n t i o s.




afott numbers
..... .. .*







Camaron, unigated t6, 26,29



SOs,* n n4 t 12., a 21 .





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S., ve no.,uigated 10, 13, 17 23




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James P. Price


.Qbiei : The PltatCity area pdu.es strawbe .ie that posses
S lavor. T aad spider miltfeeding on straery
leaves mayreduce the flavor f fruit harvested later This study is
designed to detect any effects on flavor imparted by the presence
otwspttd spider ites.

Operation: 'Sweet teW strawberries are being grown with and without .
twpea'.ela spide. mita. ruit fa.vt will be har vestNd ad
peiodically dd evuuateby 9mlentors of a trained taste panel
W it. ." :. ...:













Ja es P1 Mi"e




useflne o Lewc n saR .the Florid' st. erry industry.

addition, varying programs oupplition for existing pilticidesar
SOperation Strawberyplants wei ate

taipt,: ted, spider us being eva:,utl ;. ie :




Sum mary Wo'rk i agrees
,...diidedtetany-n, ,e -iver imeesiyt e P:







.... ... .




!U -SUD
MA AD
A. ,oiaJ ,Gle* X hnirn E ead
,20i q* Stc
WlirPo($a*t~, pgu
it td'oit, Om b uto



(FL 1 ,oelhc
Ve/ten(P-2, eh/~ml~iomin,,0,I/
0 ip1- '
ro m 0b

3, /







ACKNOWLEDGEMENT OF INDUSTRY FOR THE RESEARCH PROGRAMS
AT THE GULF COAST RESEARCH AND EDUCATION CENTER,
DOVER, FLORIDA

The effectiveness of the research programs at the Gulf Coast Research and
Education Center here in Dover has been greatly enhanced by the excellent
support from the various segments of the Agri-business industries and producers,
both locally and nationally. This support in the form of financial grants-in-aid,
supplies, services, or equipment, supplements existing state funds and makes
each research project at the Center far more productive than could be realized
otherwise. We sincerely appreciate your participation in these research programs
and are pleased to acknowledge your support.

Listed below are the names of agencies, firms or individuals who have contributed
significantly to the research programs during the past two years. We trust that our
records are complete and say again, "Thank you for your confidence."


Abbott Laboratories
Ag Guard
American Cyanamid
Bayer Corporation
BBI Produce
Bioworks
Bridges Equipment, Inc.
Bunting Biological N.A.
Carl Pippin & Sons
Chemical Dynamics, Inc.
Ciba-Geigy Corporation
Dean of Research, U of FL, IFAS
Dover Hardware
Driscoll's of Florida
Eden BioScience
Edison Plastics Company
Favorite Farms
Florida Foundation Seed Producers
Florida Strawberry Festival
Florida Strawberry Growers Assoc.
FMC Corporation
Ghesquiere Nursery
Grace Biopesticides
Gro-Mor Co.
Helena Chemical Co.
Holmberg Farms, Inc.
Hy Yield Bromine
ISK Biosciences


North Chicago, IL
Orlando, FL
Princeton, NJ
Kansas City, MO
Dover, FL
Geneva, NY
Brandon, FL
Oxnard, CA
Plant City, FL
Plant City, FL
Vero Beach, FL
Gainesville, FL
Dover, FL
Dover, FL
Poulsbo, WA
Newport News, VA
Dover, FL
Greenwood, FL
Plant City, FL
Plant City, FL
Princeton, NJ
Simcoe, Ontario
Columbia, MD
Plant City, FL
Tampa, FL
Lithia, FL
Plant City, FL
Omedga, GA








J & N Farms
Koppert B.V.
Luc Lareault Nursery
Merck
Micro Flo Company
Mycogen Corporation
Netafilm, Inc.
North American Strawberry Growers Assoc.
Rhone-Poulenc Ag. Company
Robert Kelly Beekeeper
Rohm & Haas
Strawberry Station
Sumitomo Corporation
Sydney Farms
Terra
Three Star Farm, Inc.
Tomen Agro, Inc.


Dover, FL
The Netherlands
Lavaltrie, Quebec
Nokomis, FL
Lakeland, FL
San Diego, CA
Israel
Grimsby, Ontario
Longwood, FL
Lakeland, FL
Philadelphia, PA
Dover, FL
San Francisco, CA
Dover, FL
Plant City, FL
Dover, FL
San Francisco, CA


Note: The information contained in this report is a summary of experimental
results and ongoing research and should not be used as recommendations for
crop production. No discrimination is intended or endorsement implied where
trade names and company names are used.












1-75


To 574


GCREC-
Dover


To 574
and Dover


C


Branch Forbes Road


-4







Vision
The vision for the University of Florida's Institute of Food and Agricultural Sciences (UF/IFAS)
is to increase and strengthen the knowledge base and technology for:

S EXPANDING the profitability of global competitiveness and sustainability of the
food, fiber and agricultural industries of Florida.

* PROTECTING and SUSTAINING natural resource and environmental systems.

* ENHANCING the development of human resources.

* IMPROVING the quality of human life.



Mission
The mission of UF/IFAS is to develop knowledge in agricultural, human and natural resources
and to make that knowledge accessible to sustain and enhance the quality of human life.















Gulf Coast Research and Education Center Dover
13138 Lewis Gallagher Road
Dover, FL 33527
University of Florida Institute of Food and Agricultural Sciences Cooperative Extension Service Christine Taylor Stephens, Dean

Florida Agricultural Experiment Station, Institute of Food and Agricultural Sciences, University of Florida, Richard L. Jones, Dean for Research,
publishes this information to further programs and related activities, available to all persons regardless of race, color, age, sex, handicap or national
origin. For information about alternate formats, contact the Educational Media and Services Unit, University of Florida, PO Box 110810, Gainesville,
FL 32611-0810. This information was published January 1997 as Dover GCREC Research Report DOV 1997-1, Florida Agricultural Experiment Station.




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