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Group Title: Research Report - University of Florida Agricultural Research and Education Center ; GC1981-17
Title: Outline of current research and extension projects on strawberries
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Permanent Link: http://ufdc.ufl.edu/UF00056134/00001
 Material Information
Title: Outline of current research and extension projects on strawberries
Series Title: Research Report - University of Florida Agricultural Research and Education Center ; GC1981-17
Physical Description: Book
Language: English
Creator: Waters, W. E.
Publisher: Agricultural Research & Education Center, IFAS, University of Florida
Publication Date: 1981
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Bibliographic ID: UF00056134
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 62394697

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HISTORIC NOTE


The publications in this collection do
not reflect current scientific knowledge
or recommendations. These texts
represent the historic publishing
record of the Institute for Food and
Agricultural Sciences and should be
used only to trace the historic work of
the Institute and its staff. Current IFAS
research may be found on the
Electronic Data Information Source
(EDIS)

site maintained by the Florida
Cooperative Extension Service.






Copyright 2005, Board of Trustees, University
of Florida









Agricultural Research & Education Center
IFAS, Universfty of Florida
Bradenton, Florida


Bradenton AREC Research Report GC1981-17 December 1, 1981


OUTLINE OF CURRENT RESEARCH AND EXTENSION PROJECTS ON STRAWBERRIES

W. E. Waters, Editor


This publication contains an outline of the research programs on strawberries
currently underway or planned for this coming crop season at the Institute of
Food and Agricultural Sciences (IFAS), Agricultural Research Center in Dover,
and the IFAS, Agricultural Research and Education Center in Bradenton, Florida.
Each study is listed by the official state project number and research program
leader under the following headings:


PAGE

BREEDING AND VARIETY EVALUATION .... ................................ 2

PLANT PATHOLOGY .................................................. 3

ENTOMOLOGY ........................................................ 4

HORTICULTURE ..................................... .............. 4

SOILS, FERTILIZER AND WATER .......................................... 5

WEED CONTROL ...... ....... ... .................................. 6

BIOMASS PRODUCTION ................................................. 6

AGRICULTURAL ECONOMICS ............................................. 7









A. BREEDING AND VARIETY EVALUATION


I. Project No. and Title: SV-02010. Varietal improvement of strawberries

Objectives: To develop strawberry cultivars with desirable horticultural
characterit-ics that are genetically resistant to diseases and pests
that are impiortnt in Florida.

1981-82 Season R".2arch Plans:

1. FMake apprGoimately 50 crosses among breeding lines and varieties.

a. Screen some seedlings in the greenhouse for resistance
to anthracnose.
b. Screen about 6,000 Florida seedlings in the nursery
for resistance to anthracnose. This will include
seedlings selected in A above and seedlings from
sate crosses to compare the two methods.
c. Screen in the nursery 500 to 1,000 seedlings from
the USDA, FL, LA, and NC cooperative anthracnose
breeding program.
d. Plant selected seedlings in the fruiting field in
t:!e fall.

2. Evaluate 23 FL breeding lines in replicated trials now
in the field at ARC-Dover.

a. Determine yield and fruit quality.
b. Determine horticultural characteristics.
c. Rescreen the most promising lines for anthracnose
resistance in the summer nursery.

3. Observe single 10 plant plots of 6 varieties (including 5
Californic varieties) and about 400 FL lines to determine
their va:lie for breeding or varietal candidacy. (These
include a Lfcwi lines from USDA cooperative anthracnose resis-
tance progra:n and a few lines with one wild F. virginiana
parent).

4. BeSin a program with some grower in Homestead and in Starke
of placing single plots of several (up to 20) advanced lines
in the gr.sar's field for observation in those areas.

5. Observe 3,452 clones from 1981 crosses for fruit yield,
disease resistance, and fruit and plant characteristics.
This includes 319 (out of 643) lines from USDA-FL-LA-NC
ccep3rative program that were screened in the nursery.


LEADER: C. M. HOWARD, ARC Dover







A. BREEDING AND VARIETY EVALUATION (Continued)

II. Project No. and Title: SV-01830 LEADERS: E. E. ALBREGTS &
Evaluation of Vegetable Cultivars. C. M. HOWARD, ARC-Dover

Objectives: To develop strawberry cultivars which produce optimum
yields of high quality fruit, are good plant producers,
and are resistant to diseases.

1981-82 Season Research Plans:

1. Evaluate 23 FL strawberry breeding lines and 4 varieties in
replicated trials.

a. Determine horticultural characteristics.
b. Determine fruit quality and characteristics.
c. Determine earliness of fruiting, seasonal yields, and
percent marketable yields.
d. Obtain additional data on anthracnose of any lines
deemed suitable for varietal candidacy.



B. PLANT PATHOLOGY LEADER: C. M. HOWARD, ARC-Dover

I. Project No. and Title- SV-02009. Diseases of Strawberries.

Objectives: To study the etiology, epidemiology and control of
strawberry diseases.

1981-82 Season Research Plans:

1. Continue attempts to determine pathogenicity of a sterile
fungus that appears to cause "white rot" of strawberry fruit
and identify the fungus.

2. Repeat pathogenicity test of Glomerella cinqulata which I found
causing a new anthracnose disease in North Carolina a few years
ago and have since found to be the cause of wilt of plants from
NC, Arkansas, and Tennessee after they are set in Florida fruit
production fields.

3. Continue work to identify the Rhizoctonia sp. that causes the
new strawberry disease anther and pistil blight.

4. Provide fruit for residue analysis from a Vydate and Nemacur
trial initiated in the summer nursery.

5. Determine if indexing for strawberry viruses can be done under
Florida climatic conditions. Begin work on determining viruses
present in Florida if indexing can be done.

6. Repeat pathogenicity test of Colletotrichum fragariae which
causes the new disease "black leaf spot" of strawberry.










C. ENTOMOLOGY LEADER: J. F. PRICE, AREC-Bradenton

I. Project No. and Title: SV-02010. Varietal Improvement of Strawberries

Objectives: To develop strawberry cultivars with desirable horticul-
tural characteristics that are genetically resistant to
diseases and pests that are important in Florida.

1981-82 Season Research Plans:

1. Continue efforts to determine the optimal spider mite density
required for most effective timing of miticide applications.

2. Determine the relative efficiency of 4 pesticides for spider
mite control.

3. Continue evaluation of the predatory mite, Phytoseiulus
macropilis, as a biological regulator of the spider mite.




D. HORTICULTURE LEADER: E. E. ALBREGTS, ARC-Dover

I. Project No. and Title; SV-02118. Efficient fertilizer and water manage-
ment systems for vegetable production.

Objectives; To develop and evaluate systems to maximize efficiency of
fertilizer and water management for vegetable crop production.

1981-82 Season Research Plans:

1. Evaluate effects of soil fertility and foliar applied micro-
nutrients on loss of color in young strawberry leaves early
in season.

2. Evaluate growing of vegetable crops on strawberry beds after
end of fruit harvest. Note original soil fertility and effect
of added fertilizer on yields and soil analyses.

II. Project No. and Title: SV-00001. Preliminary research trials.

Objectives; To evaluate strawberry plant treatments on a limited basis
to determine if they have potential in strawberry production.

1981-82 Season Research Plans:

1. Preliminary research on methods to induce strawberry plants
to flower when they are in a vegetative stage.
-----------------------------------










E. SOILS, FERTILIZERS, AND WATER LEADER: E. E. ALBREGTS, ARC-Dover

I. Project No. and Title: SV-02118. Efficient fertilizer and water manage-
ment systems for vegetable production.

Objectives; To develop and evaluate systems to maximize efficiency of
fertilizer and water management for vegetable crop production.

1981-82 Season Research Plans:

1. Determine rate of IBDU, sulfur coated urea and Osmocote for
optimum strawberry production. Use drip and overhead irriga-
tion, two cultivars, and two and four row beds. To correlate
fertilizer rate and fruit yield with soil and tissue analyses.

2. Determine the role of foliar applied micronutrients on straw-
berry fruit quality.

3. Determine role of foliar applied nitrogen, phosphorus, and
potassium with three rates of soil fertilization on strawberry
plant growth and yield.

4. Evaluate strawberry fruit and flower damage resulting from
intermittent irrigation, delaying start of irrigation, and
terminating irrigation early during frosts and freezes.

5. Compare beds made with a super bedder to those made by older
bed presses for plant growth, fruiting, and soil effects.

6. Evaluate effect of intermittent irrigation to establish trans-
plants in two grower fields.

II. Project No. and Title: GC-02118. Efficient fertilizer and water
management systems for vegetable
production.

LEADER: C. M. GERALDSON,
AREC-Bradenton

Objectives; To correlate fertilizer sources and placement using
overhead and seepage irrigation for strawberries.

1981-82 Season Research Plans;

1. Osmocote 15-5-20 and soluble 18-2-25 in varied placement com-
binations are being evaluated in conjunction with 2 irrigation
systems: seepage only and seepage and overhead selectively
applied with micro jets. Composition of the root environment
and the associated productivity will be measured.





-6-


F. WEED CONTROL


LEADERS: J. P. GILREATH (AREC-Bradentor
& E. E. ALBREGTS (ARC-Dover)


I. Project No. and Title: GC-2063 and SV-2063. Weed Control in Vegetable
Crop Production.


Objectives:


To develop improved weed control practices in strawberry
nurseries and fruiting field.


1981-82 Season Research Plans:


1. Evaluation of herbicide for weed control in fruiting straw-
berry beds.

2. Evaluation of herbicides for weed control in strawberry
nurseries.

3. Evaluate herbicides for weed control in row middle of
fruiting strawberries.


G. BIOMASS PRODUCTION


LEADER: E. E. ALBREGTS, ARC-Dover


I. Project No. and Title; "No. Pending." Root crops production for Biomass.


Objectives:


To utilize the residual fertilizer remaining in plant bed
after strawberry harvest season by planting root crops for
fuel conversion.


1981-82 Season Research Plans:


1. Evaluate the growing of root crops, such as sweet potatoes,
on strawberry beds during summer to produce starch for alcohol
or methane production.

II. Project No. and Title: "No. Pending." Utilization of residual fertilizer
on vegetable and strawberry land
in west central Florida for pro-
duction of biomass.


Objectives:


To supply the gas industry on a year around basis with
terrestrial biomass from which the highest quality of
methane gas can be produced.


1981-82 Season Research Plans;


1. Evaluate the growing of forage crops such as kenaf and sorghum
on strawberry beds during summer to produce cellulose for alcohol
or methane production.













H. AGRICULTURAL ECONOMICS


LEADERS: F. J. PROCHASKA (Food & Resource
Economics Dept., Gainesville);
& J. W. PREVATT (AREC-Bradenton)


I. Project No. and Title; 1621. Economic behavior of food and fiber firms.

Objectives;

1. Develop and maintain current technical and economic data
relative to enterprises and firms producing and marketing
selected agricultural and marine commodities.

2. Evaluate alternative firm decisions for maximizing net
income.

1981-82 Season Research Plans:

1. Develop technical enterprise budget for strawberries.

2. Evaluate strawberry production costs and break-even prices
for decision-making purposes.




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