Agricultural Research and Education
--.. -- Bra ton, Florida
",HUviE LBRAP-RY

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Ornamental Open House
May 1,1974

INSTITUTE OF FOOD AND AGRICULTURAL SCIENCES

AGRICULTURAL RESEARCH & EDUCATION CENTER
BRADENTON, FLORIDA

FIFTY

(50)

YEARS

OF RESEARCH HELPING TO IMPROVE
FLORIDA AGRICULTURE
(1925 1975)

BRADENTON AREC MIMEO REPORT GC-1974-3
COMPILED AND EDITED BY GARY J. WILFRET
PRINTING: EDITORIAL DEPT., IFAS, UNIVERSITY OF FLORIDA,
GAINESVILLE, FLORIDA

-2-

TABLE OF CONTENTS

PAGE

50 Years of Research at Bradenton................................... 1

Table of Contents................................................... 2

Introduction........................................................ 3

History of AREC-Bradenton....................................... 4

List of Ornamental and Vegetable Faculty............................. 5

Tour Map............................................................. 6,7

Saran House Overlay........................................***..**** 8

Bay H............................................................. 9
Effect of A-Rest on Easter Lilies.......................... 10
Growth Regulators on Mass Market Pot Chrysanthemums........ 11
Growth Regulators on 6" Pot Chrysanthemums................. 12

Bay G........................................... ................ 13
Effect of Fertilizer Rate and Saline Water on
Chrysanthemums............................................ 14

Bay E and F..................................... ......... 15,16
System Approach to Chrysanthemum Production................ 17

Bay D............................................. ............... 18
Nematicide, Fertilizer and Watering Variables on
Chrysanthemums............................................ 19

Bay B................................. ...... .. ................. 20
Effect of Fusarium solani on Chrysanthemum ................ 21
Excess Photosynthate Syndrome of Chrysanthemum ............. 21

Bay A ................................................. ........ ... 22
Effect of Nitrogen Form and Fungicides on Control of
Ascochyta Blight of Chrysanthemum......................... 23

Ornamental Horticulture Greenhouse................................... 24

Effect of a Branching Compound on Pot Chrysanthemums ............. 25
Temperature Effects on Caladiums.................................. 26
Effect of Temperature and Curing of Caladium Tubers............... 26
Effect of Cold Exposure on Caladium Tuber Growth.................. 27,28
Effect of Coating on Moisture Retention in Caladium Tubers......... 29

Physiology Greenhouse ................................ ....... 30
Toxicity of Sodium Fluoride to Easter Lily........................ 31

-2a-

PAGE

ORB House..................................................................... 32
Effect of Insecticide, Fungicides and Irrigation Methods on
Chrysanthemums............... ...................................... 33

Field D............................. ....... .. ........... ... ..... 34
Gladiolus Seedlings and New Cultivars............................... 35
Corm Position and Fertilizer Source on Gladiolus.................... 36
Osmocote on Gladiolus Cormels...................................... 37
Mulching of Gladiolus............................................. 38
Fertilization of Celosia for Cut Flowers............................ 38
Fertilization of Garden Chrysanthemums............................. 39

Field C................................................................ 40
Copper Spray Injury to Gladiolus.................................. 41
Effect of Temperature on Curing Gladiolus Corms..................... 41
Effect of Etherel on Gladiolus Corm Disease Control................. 42
New Fungicides for Control of Fusarium of Gladiolus................. 42
Effect of Dowicide B on Sprouted Gladiolus Corms.................... 43
Compatibility of Dowicide B and Busan 72A on Gladiolus Corms........ 43
Effect of Nitrogen on Corm Dormancy................................. 44

Head'House Demonstrations.......................................... 45
a. Hypobaric Storage Chambers..................................... 46
b. Fluoride Injury on Cut Flowers................................. 46
c. Floral Preservatives on Cut Flowers............................ 46

INTRODUCTION

On behalf of the faculty and staff, I extend to each of you a most cordial
welcome to the Agricultural Research and Education Center at Bradenton. This
Center was initiated fifty years ago as a one-man operation in Palmetto and
the first ornamental programs began about 17 years later. This Center, with
affiliated Agricultural Research Centers located in Dover and Immokalee,
Florida, is a Research and Education unit of the University of Florida's
Institute of Food and Agricultural Sciences.

In Bradenton we have 10 research scientists from various disciplines of
training who participate in ornamental plant 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 inter-
disciplinary cooperative team approach to research problems far more productive
than could otherwise be accomplished with limited investment in independent
programs.

An integral part of the overall mission of this center deals directly with
the flower industries in Florida through research programs to (1) Development
of new or improving technology for more efficient production, handling and
utilization of horticultural products composed mainly of flowers and vegetables;
(2) Improvement in quality of products made available to the consuming public;
(3) Development of technology and practices to reduce environmental pollution
without sacrificing quality during production and thereby enhance man's
environment; (4) To maintain and improve the productivity of soils in the
state of Florida; (5) Develop information to all Florida growers to compete
effectively with other geographic areas of the nation and world; (6)
Advancement of basic knowledge of the various scientific disciplines
represented by the faculty; (7) To assist 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 mimeograph summarizes the active research
projects under way this season. We sincerely appreciate your interest and
support of these research programs and continuously solicit your suggestions
for improvement and ideas of industry needs from our research and extension
programs.

Will E. Waters
/ Center Director

HISTORY OF THE AGRICULTURAL RESEARCH & EDUCATION CENTER BRADENTON

Agricultural Research & Education Center Bradenton originated in the
fall of 1925 with construction of the Tomato Disease Laboratory.

Tomato Disease Laboratory: In 1925 a 20-acre tract of county-owned property
in Palmetto was made available with the cooperation of the Manatee Board
of County Commissioners, with money and equipment supplied by local growers.
Primary objevtive of the laboratory was to formulate a control of nailhead
spot of tomato. Later studies emphasized the breeding for resistance to
Fusarium wilt and the control of tobacco mosaic on tomatoes. In 1937, with
the expansion of the vegetable industry in Manatee County and surrounding
areas, the State Legislature authorized new facilities for the research program.

Vegetable Crops Laboratory: In August, 1938, the Manatee County Com-
missioners donated eighty percent of the purchase price of a 106-acre tract
on the east side of Bradenton. This expanded program led to the establish-
ment of the Vegetable Crops Laboratory. Following this relocation,
horticultural, entomological, and soil studies were initiated on tomatoes,
peppers, lettuce, sweet corn, and other vegetables. Since the laboratory
was located in the gladiolus growing area, the scope was further broadened
in 1942 to include disease problems confronting gladiolus growers.

Gulf Coast Experiment Station: In March, 1951, at a meeting of the State
Board of Control, the Vegetable Crops Laboratory was given the status of a
branch station and was renamed the Gulf Coast Experiment Station. Investi-
gations were then initiated dealing with chemical weed control, nematodes,
and other soil-borne pests. The ornamental phase was broadened to include
chrysanthemums and other commercial cut-flowers.

In the late 1950's it became apparent that the facilities on the outskirts
of Bradenton were no longer adequate for the research program. In 1959
a 200-acre tract was acquired 8 miles east of Bradenton. All of the
vegetable experimental field program were moved to this new location.

In 1965, upon completion of the construction of office and laboratory
facilities, farm buildings, greenhouses, and a residence, all research
programs were conducted on this new land.

Agricultural Research & Education Center Bradenton: In 1971 the Gulf
Coast Experiment Station was renamed Agricultural Research & Education
Center to emphasize the programs of both research and education.

Active programs are in progress on production problems associated with
vegetables and ornamentals grown on the sandy soils of Florida.

AREC-Bradenton has administrative and research supervision over two
satellite stations: ARC-Immokalee (formerly the South Florida Field
Laboratory) and ARC-Dover (formerly the Strawberry and Vegetable Field
Laboratory). The former center specializes in vegetable nutrition and
culture, etiology and control of diseases, and pasture research while the
latter is the hub of strawberry research in Florida, including breeding,
horticultural and pathological studies.

LIST OF FACULTY, APPOINTMENT DATE, AND AREA OF SPECIALIZATION

Agricultural Research and Education Center Bradenton, Florida

Ornamentals:
Waters, Will E., 1960, Horticulturist and Center Director. Administra-
tion, soil and plant nutrition, and herbicides.

Engelhard, A. W., 1966, Assoc. Plant Pathologist. Etiology and control
of diseases of ornamental crops.

Geraldson, C. M., 1951, Soils Chemist. Soil nutritional problems and their
relationship with cultural methods for vegetable production.

Green, J. L., 1973, Asst. Ornamental Horticulturist. Systems for
production, harvesting and marketing of ornamental crops.

Levins, R. A., 1973, Area Farm Management Economist. Development of
economic data on ornamental, vegetable and other crops.

Magie, R. 0., 1945, Plant Pathologist. Etiology and control of diseases
of ornamental crops with emphasis on gladiolus flower and corm diseases.

Marousky, F. J., 1967, Research Horticulturist (USDA). Post-harvest
physiology of cut flowers.

Overman, A. J., 1945, Nematologist. Etiology and control of nematode
problems of ornamentals and vegetables.

Poe, S. L., 1969, Asst. Entomologist. Identification, biology and control
of insects and mites of vegetables and ornamentals.

Wilfret, G. J., 1969, Asst. Geneticist. Breeding and development of new
varieties of cut-flowers and other ornamental crops.

Woltz, S. S., 1953, Plant Physiologist. Physiology disorders and diseases
of vegetable and ornamental crops.

Vegetables:
Burgis, D. S., 1946, Horticulturist. Vegetable production, weed control
and growth regulators.

Crill, J. P., 1968, Assoc. Plant Pathologist. Vegetable breeding,
genetics of fungus and virus disease resistance.

Jones, J. P., 1958, Plant Pathologist. Etiology aid control of diseases
of vegetable crops.

Agricultural Research Center Immokalee, Florida
Vegetables:
Everett, P. H., 1958, Soils Chemist. Center Administration, soil and plant
nutrition, production, and variety development of vegetable crops.

Blazquez, C. H., 1966, Assoc. Plant Pathologist. Etiology and control of
vegetable diseases with emphasis on disease forecasting & fungicide longevity.

Agricultural Research Center Dover, Florida
Vegetables:
Albregts, E. E., 1967, Assoc. Soils Chemist. Center administration, pro-
duction, soil, and plant nutrition of strawberries and vegetables.

Howard, C. M., 1967, Assoc. Plant Pathologist. Strawberry breeding and
etiology and control of vegetable and strawberry diseases.

-6-

TOUR MAP AND BUILDING CODE

TOUR
BEGIN LAND L: UNDER THE OAK TREES
END METAL HEAD HOUSE DEMONSTRATIONS AND REFRESHMENTS

BUILDINGS
1. OFFICE AND RESEARCH LABORATORIES
2. SARAN HOUSE
3. RESEARCH GREENHOUSES: A. PATHOLOGY
B, ENTOMOLOGY
c. PHYSIOLOGY
D. ORCHIDOLOGY
E. ORNAMENTAL HORTICULTURE

4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.

GENERAL SUPPLY STORAGE
ORB HOUSE
PLANT PRODUCTION HOUSE
HEAD HOUSE (POST-HARVEST PHYSIOLOGY)
RESEARCH PREPARATION ROOM
VIROLOGY LABORATORY
STORAGE LOCKERS
SPEEDLING TRANSPLANT HOUSE
MAINTENANCE COMPOUND
TRACTOR STORAGE
STORAGE BARN
RESIDENCE

WELLS

S3D

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4- In 64 fAII5 Rn n

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1

SARAN HOUSE

BAY H

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-10-

Location: Field K, Structure #2, Bay H, Rows 4 and 5

Experiment Title: Effect of A-Rest on Easter Lilies Grown under 30% Shade
Cloth

1. Investigator: G. J. Wilfret

2. Objective: To demonstrate the effectiveness of A-Rest on reducing height
of Easter Lilies grown under 30% saran shade

3. Cultural Data:
Planted: Set 1 Dec. 29, 1973; Set 2 Jan. 20, 1974
Treated: Set 1 Feb. 11, 1974; Set 2 March 11, 1974
Plot size: 1 bulb/6" pot
Soil mix: 3 sand : 1 peat : Perlite
Fertilizer: 7 lb/yd3 14-14-14 Osmocote

4. Treatment Variables
a. A-Rest Concentrations (Set 1)

A-Rest
(mg/6" pot)
0
0.25
0.50
0.75
1.00
0.25
0.50
0.75
1.00

Application

drench
drench
drench
drench
spray
spray
spray
spray

b. A-Rest Concentrations (Set 2)

A-Rest
(mg/6" pot)
0
0.25
0.50
0.75
1.00
0.25
0.50
0.75
1.00

Application

spray
spray
spray
spray
drench
drench
drench
drench

5. Comments: Data presently being analyzed.

6. Project No. and Title: GC-01683 Anatomical, morphological and bio-
chemical effects of growth regulators on
ornamental plants.

Plot No.

1
2
3
4
5
6
7
8
9

Plot No.

20
21
22
23
24
25
26
27
28

-11-

Location: Field K, Structure #2, Bay H, Beds 1-3

Experiment Title: Effect of growth regulators on mass market pot chrysanthemums

1. Investigator: G. J. Wilfret

2. Objective: To study the effect of growth regulators
chrysanthemums for mass market pot sales

3. Cultural Data:
Potted: Feb. 22, 1974
Pinched: March 11, 1974
Treated: March 18, 1974
Replications: 4
Plot Size: 1 plant/4" pot
Medium: 3 sand : 1 seat : 1 Perltie
Fertilizer: 6 lb/yd 14-14-14 Osmocote

4. Treatment Variables:
a. Growth Regulators (10)

Plot No. Growth Reg. Cone.
(per 4" pot)
1 -
2 B-9 0.5%
3 B-9 0.5%
4 A-Rest 0.125
5 A-Rest 0.25
6 A-Rest 0.5
7 A-Rest 0.125
8 A-Rest 0.25
9 A-Rest 0.50
10* B-9 0.5%
*treated March 4 with 100 ppm SD8339.

b. Cultivars
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.

5. Comments:

(33)
Always Pink
Mt. Snow
Malabar
Bravo
Delaware
Yellow Jess. Williams
White Pot
Minn Yellow
Stardom
Grandchild
Penguin
Minn autumn
Jess. Williams
Fireside Cushion
Festive Cushion
Lipstick
Oregon

Initial burning caused by high soil
release of Osmocote.

18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.

on single plant

Application

1 spray
2 sprays weekly
spray
spray
spray
drench
drench
drench
2 weekly sprays

Distinctive
Tinkerbell
Martian
Yellow Daisy Pot
Matador
Discovery
Sunburst Cushion
Paragon
Mt. Sun
Puritan
Purple Waters
Dolliette
Festival
Jackpot
White Grandchild
Baby Tears

temperature and rapid

6. Project No. and Title: GC-01683 Anatomical, morphological and

-12-

Location: Land K, Structure 2, Bay H, Row 7

Experiment Title: Effect of growth regulators on standard 6" pot chrysan-
themums

1. Investigator: G. J. Wilfret

2. Objective: To demonstrate the effect of growth regulators on
standard pot chrysanthemum production

3. Cultural Data:
Cultivar: Fred Shoesmith
Potted: Feb. 22, 1974
Pinched: March 5, 1974
Lights Off: March 12, 1974
Treated: March 26, 1974
Replications: 3
Plot size: 4 plants/6" pot
Medium: 3 sand : 1 eat : Perlite
Fertilizer: 6 lb/yd 14-14-14 Osmocote

4. Treatment Variables (11)

Plot No. Growth Reg.

Control
B-9
B-9
A-Rest
A-Rest
A-Rest
A-Rest
A-Rest
A-Rest
A-Rest
A-Rest

Cone.
(mg/6" pot)

0.25%
0.50%
0.25
0.50
0.75
1.00
0.25
0.50
0.75
1.00

Application

spray
spray
spray
spray
spray
spray
drench
drench
drench
drench

5. Comments:

6. Project No.

and Title: GC-01683 Anatomical, morphological and
biochemical effects of growth regulators on
ornamental plants

-13-
S

BAY G

K,CA & N BROADCAST PREPLANT

1464 2928
#N/A #N/A

2928
#N/A

1464
#N/A
+
NACL

2928
#N/A
+
NACL

+
NACL

1464
#N/A
+
NACL

2928
#N/A

1464
#N/A

K,CAN CONSTANT INJECTION

1464 366
#N/A #N/A

1464
#N/A
+
NACL

366
#N/A

366
#N/A
+
NACL

366
#N/A
+
NACL

1464
#N/A

1464
#N/A
NAC
NACL

-14-

Location: Land K, Structure #2 (Saran House), Bay G

Experiment Title: Effect of method and rate of fertilizer application and
saline water on chrysanthemum growth.

1. Investigators: J. L. Green and C. M. Geraldson

2. Objective:

Evaluate the tolerance of chrysanthemum plants to saline
water containing 177 ppm Cl and 115 ppm Na when the K,
Ca and N fertilizer ions are applied either surface
broadcast preplant at two rates or continuously injected
at two rates with the irrigation water through the
viaflow tubing.

3. Cultural Data:
Planted rooted plants: Yellow Iceberg Feb. 15
Pink Marble, White Marble and Green Pepper Feb. 20
Lights Off: March 12
Full-bed mulch
24 hour/day irrigation thru viaflow: 1 central tube/bed placed at
4" depth

4. Treatment Variables:
a. Plant cultivars (4):
1) Yellow Iceberg
2) White Marble
3) Pink Marble
4) Yolo Wonder, green pepper

b. Method of fertilizer application (2)
1) Surface broadcast of dry fertilizer preplant
2) Continuous injection through viaflow irrigation

c. Water quality (2):
1) Saline water AREC well water plus 115 ppm Na & 177 ppm Cl
2) AREC well water contains approx. 8 ppm Na & 25 ppm Cl

d. Rates of fertilizer application (3):
1) Two preplant broadcast rates: 1464 Ibs N/A
2928 lbs N/A
2) Two injection rates: 168 ppm N = 1464 Ibs N/A/crop
42 ppm N = 366 lbs N/A/crop

5. Comments:

This study in conjunction with the other environmental studies
will aid in designing a total system for chrysanthemum
production requiring minimum applications of water, fertilizer
and chemical pesticides. Further, it will explore the
possibility of using saline water in a trickle irrigation
system.

6. Project No. and Title: GC-01107, Macroelement nutrition of certain
floricultural crops.

-15-

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-17-

Location: Land K, Structure #2 (Saran House), Bays E-F

Experiment Title: Exp. No. 1 System approach to chrysanthemum production
for cut flowers

1. Investigators: G. J. Wilfret, J. L. Green and S. L. Poe

2. Objective: To'evaluate the use of a total program in the production
of chrysanthemum cut,flowers

3. Planting Data:
Planted: Feb. 13, 1974 Cultivars: Blue Marble & Iceberg
Pinched: Mar. 5, 1974 Replications: 4 (10,000-40,000)
Lights out: Mar. 12, 1974 Plants/plot: 24
Spacing: 6 x 8 in.

4. Variables
a. Insecticides (2)
1) Systemic (Temik)
2) Foliar
b. Fertilizer Source: (3) at 300# N/A
10) 20-20-20 (liquid nutrileaf)
20) 6-6-6 (30% organic)
30) 14-14-14 Osmocote
c. Mulching: (2)
100) Paper mulched 200) no mulch
d. Irrigation System: (2)
1000) Seep 2000) DuPont Viaflow

5. Comments: Data not available at present

6. Project No. and Title: GC-01107 and GC-01269 Macroelement
nutrition of certain floricultural crops
and biology and control of pests of cut flowers.

-18-

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-19-

Location: Land K, Structure #2 (Saran House), Bay D

Experiment Title:

Effect of viaflow tube placement, watering interval,
fertilizer application method and rate, and nematicide
on growth of chrysanthemums.

1. Investigators: A. J. Overman and J. L. Green

2. Objectives:

Evaluate the interrelationships among depth of viaflow
tube placement, watering interval, preplant application
of Temik, and method and rate of fertilizer application
on chrysanthemum growth and pest control.

3. Cultural Data:
Planted rooted cuttings: Feb. 14
Lights Off: March 12
No. of replications: 2
No. of plants/replicate: 18
Full-bed mulch on all beds
Watering intervals initiated: Feb. 14
Fertilizer injection treatments initiated:

Feb. 20

4. Treatment Variables:
a. Cultivars (2)
1) Yellow Shasta
2) Orange Beauregard

b. Placement of viaflow tube (2)
1) surface, bed center
2) 4" depth, bed center

c. Watering intervals paired with total fertilizer application
rates in an incomplete factorial (3 combinations):

Watering interval
(hours daily)
1. 3
2. 6
3. 24

Inches/week
H)0
0.4
0.8
3.2

Fertilizer rates
(Ibs N/A/crop)
183
366
1464

d. Fertilizer application methods (2)
1) Dry fertilizer applied broadcast to the bed surface
preplant
2) Injection of fertilizer through the viaflow
(168 ppm N)

e. Nematicide:
1) Control
2) Temik 10G 15 lb ai/A, preplant broadcast on bed
surface under mulch

5. Comments:

This experiment in conjunction with other environmental
studies will aid in designing a total system for chrysanthemum
production requiring minimum applications of water,
fertilizer, and chemical pesticides.

6. Project No. and Title: GC-01662 Biology and control of nematodes
affecting ornamental ...*..-- i--.raviv exDeriment)

-20-

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-21-

Location: Field K, Structure #2 (Saran House), Bay B, Beds 1-2

Experiment Title: Effect of Fusarium solani on the development of chrysanthemum
plants

1. Investigators: A. W. Engelhard and J. Crane

2. Objectives: Determine if Fusarium solani causes disease on
chrysanthemums in the field

3. Cultural Data:
Cuttings rooted: Feb. 1, 1974
Set in field: Mar. 1, 1974 (Illini Igloo Mar. 5, 1974)
Long day treatment: Until March 12, 1974
24 plants per treatment, 2 replications per treatment

4. Treatment Variables:
a. Varieties Telstar, Illini Igloo, Yellow Iceberg,
Royal Purple, Torch, Puritan

b. Inoculation rooted in infested medium
inoculated rooted cuttings by sticking an infested
toothpick through the base of each cutting

5. Comments:

6. Project No. and Title: GC-01518 Diseases of Ornamental Plants
Caused by Soil-borne Pathogens

Location: Field K, Structure #2 (Saran House), Bay B, Beds 3-4

Experiment Title: Effect of boron and magnesium on the cupping, crinkling,
thickening, brittleness, leaf spotting and chlorosis of
chrysanthemum leaves associated with high light intensity and
long days (excess photosynthate syndrome or high sugar disease)

1. Investigators: S. S. Woltz and A. W. Engelhard

2. Objective: Determine if boron, magnesium and boron-magnesium combin-
ations applied weekly will control the leaf symptoms
associated with the excess photosynthate syndrome

3. Cultural Data:
Planted: Feb. 28, 1974
Long days treatment: Until Mar. 12, 1974
Plot size: 108 plants, 1/3 yellow Iceberg, 1/3 Shasta, 1/3 Explorer
Fertilized: weekly with 30 lb/acre N and K20

4. Treatment Variables: Treatments applied weekly over plots
1) Control
2) Borax 4 lb/A/wk
3) MgSO4-7H20 50 lb/A/wk
4) Borax + MgSO4 4 + 40 lb/A/wk

5. Comments:

6. Project No. and Title: GC-01518 Diseases of Ornamental Plants
Caused by Soil-borne Pathogens

-22-

BAY A

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OVERHEAD IRRIGATION

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-23-

Location: Land K, Structure #2 (Saran House), Bay A

Experiment Title:

Effect of irrigation-fertilizer application method, nitrogen
form, and fungicides on incidence and control of Ascochyta
blight and growth of chrysanthemums

1. Investigators: J. L. Green and A. W. Engelhard

2. Objectives:

Determine the effect on control of Ascochyta blight and
growth of chrysanthemums of 1) supplying a portion of the
nitrogen as ammonium compared to supplying all the
nitrogen as nitrate, 2) applying the fertilizer-water
through an overhead sprinkling system compared to application
through viaflow under mulch, and 3) of two levels of
systemic-nonsystemic fungicide combinations sprayed on
the foliage weekly

3. Cultural Data
Planted rooted cuttings: Feb. 15
Lights off: Mar. 11
No. of replications: 2
No. of plants/rep: 36
Inoculated with Ascochyta: Mar. 15
Sprays: Weekly, starting Mar. 19, 1974
Water-fertilizer treatments: 3.2" water/week; 336

Ibs N/A/crop

4. Treatment Variables:
a. Cultivars (2):

1) Mrs. Roy;

2) Albatross

b. Irrigation-fertilizer application systems (2)
1) Viaflow under mulch
2) Overhead sprinkler application through

Chapin spray stakes

c. Nitrogen forms (2):
1) 50% NH4+ + 50% N03- nitrogen (42 ppm N)
2) 100% N03 nitrogen (42 ppm N)

d. Fungicide treatments (7):
1) Control
2) Benlate 50W + Daconil 75W
3) Benlate 50W + Manzate 200 80W
4) Benlate 50W + Orthocide 50W
5) Benlate 50W + Daconil 75W
6) Benlate 50W + Manzate 200 80W
7) Benlate 50W + Orthocide 50W
8) Benlate 50W + Kocide 101

Lbs/100 gal

0.25
0.25
0.25
0.50
0.50
0.50
0.25

0.75
0.75
0.75
0.75
0.75
0.75
1.0

5. Comments: This experiment, in conjunction with related studies, will
provide information which will aid in designing a total system for
chrysanthemum production requiring minimum applications of water,
fertilizer and chemical pesticides.

6. Project No. and Title:
floricultural crops
control of diseases

GC-01107 Macroelement nutrition of certain
and GC-01477 Etiology, symptomatology and
of floral crops

-24-

ORNAMENTAL HORTICULTURE GREENHOUSE

S

<-
LlU LU
--- I-
/) I- GO 0--.

=3 -a. o Q

-25-

Location: Ornamental Horticulture Greenhouse

Experiment Title: No. 3 Effect of a branching compound on pot chrysanthemums

1. Investigator: G. J. Wilfret

2. Objective:

To study the effect of a new branching compound, Accel
(SD 8339), on pot chrysanthemums for mass market sale

3. Cultural Data:
Potted: Feb. 22, 1974
Pinched: Mar. 11, 1974
Growth regulator for height: B-9 at 0.5% March 18 and 25
Replications: 4
Plot size: 1 plant/4" pot
Medium: 3 sand : 1 eat : Perlite
Fertilizer: 6 Ib/yd 14-14-14 Osmocote

4. Treatment Variables:
a. Growth regulators

(SD 8339) (10):

Plot No.

10
20
30
40
50
60
70
80
90
00

Cone. (ppm)

50
100
200
50
100
200
50
100
200

b. Cultivars (10)
1. Jessamine Williams
2. Stardom
3. Always pink
4. Mt. Snow
5. Puritan

Application Time

7 days before pinch
11
It
3 days before pinch
It

after pinch

Manatee Iceberg
Blue Marble
Bright Golden Anne
Fred Shoesmith
Orange Beauregard

5. Comments: None available at present

6. Project No. and Title: GC-1683 Anatomical, morphological and
biochemical effects of growth regulators
on ornamental plants

Date

3/4/74

3/8/74

3/11/74

-26-

Location: Ornamental Horticultural Greenhouse

Experiment Title: Temperature effects on caladiums

1. Investigator: F. J. Marousky

2. Objective: To determine the influence of soil temperature just prior
to tuber harveAt (digging) on subsequent storage life

3. Cultural Data: Tubers dug Nov. 23, 1973, cured 10 days at 850F, held
at 750F 11 days (Nov. 22 Dec. 3). Tubers cut to seed
pieces Dec. 3, planted 10 pots containing peat on Dec. 26
and held at 750F until Feb. 6 at which time they were
placed in the greenhouse

4. Treatment Variables:
a. Plants will be subjected to variable soil temperatures (60-80)
for 1-3 weeks after tubers "mature"
b. Cultivars: Candidum

5. Comments: Experiment in progress

6. Project No. and Title: 401-7611-16040 (USDA work reporting unit) -
Improved methods for maintaining quality of cut flowers and nursery
stocks during marketing

Location: Ornamental Horticultural Greenhouse

Experiment Title: Effect of temperature and curing on Caladium tuber
weight and growth

1. Investigator: F. J. Marousky

2. Objective: To determine the influence of curing temperature and
duration on tuber growth

3. Cultural Data: Tubers dug Nov. 27, 1973, cleaned and subjected to
variables below. Tubers then planted after storage
period. Two tubers/6 inch pot

4. Treatment Variables:
a. Curing Temp. Curing duration Wks storage at70F

1) 900F 7 days 6
2) 12
3) 18
7) 14 days 6
8) 12
9) 18
13) 700F 7 days 6
14) 7.days 12
15) ". 18
19) 14 days 6
20) 12
21) 18

-27-

b. Cultivars:
1) Candidum
2) Scarlet Pimpernel

5. Comments: Experiment in progress

6. Project No. and Title: 401-7611-16040 (USDA work reporting unit) -
Improved methods for maintaining quality of cut flowers and
nursery stocks during marketing

Location: Ornamental Horticulture Greenhouse

Experiment Title: Effect of temperature and curing on caladium tuber weight
and growth

1. Investigator: F. J. Marousky

2. Objective:

To determine the influence of curing temperature and
duration and cold exposure (420) during storage on
subsequent tuber growth

3. Cultural Data: Similar to Exp. 2B

4. Treatment Variables:

(a) Curing Temp.

Curing
Duration Storage Treatment

7 days 700
i" 700
i, 700
14 days 700
f" 700
tt 700
7 days 700
,, 700
I" 700
14 days 70
"i 700
i, 700

for
for
for
for
for
for
for
for
for
for
for
for

wks
wks,.
wks,
wks
wks,
wks,
wks
wks,
wks,
wks
wks,
wks,

420
420

420
420

for
for

for
for

6 days, 70 for 8 days
6 days, 900 for 8 days

6 days, 700 for 8 days
6 days, 900 for 8 days

420 for 6 days, 700 for 8 days
420 for 6 days, 900 for 8 days

420 for 6 days, 70 for 8 days
420 for 6 days, 90 for 8 days

(b) Cultivars: Candidum and Scarlet Pimpernel

5. Comments: Experiment in progress

6. Project No. and Title: 401-7611-16040 (USDA work reporting unit) -
Improved methods for maintaining quality of cut flowers and
nursery stocks during marketing

4
5
6
10
11
12
16
17
18
22
23
24

900

II

I,
70F
11

it

-28-

Location: Ornamental Horticultural Greenhouse

Experiment Title: Effect of cold exposure on caladium tuber growth

1. Investigator: F. J. Marousky

2. Objective: To determine the influence of cold exposure duration
on tuber growth

3. Cultural Data: Tubers dug Nov. 27, 1973, cleaned and placed at
curing temperatures Nov. 28

4. Treatment Variables:
a. Curing Temp. and Duration
1 900 for 2 wks
2 900 for 2 wks
3 90 for 2 wks
4 90 for 2 wks
5 90 for 2 wks
6 90 for 2 wks
7 700 for 2 wks
8 700 for 2 wks
9 700 for 2 wks
10 70 for 2 wks
11 700 for 2 wks
12 70 for 2 wks

Cold Exposure & Duration
Not exposed to cold

Exposed to
Exposed to
Exposed to
Exposed to
Exposed to (
Not exposed
Exposed to
Exposed to

Exposed
Exposed
Exposed

for 10 days
for 1 day
for 3 days
for 10 days
for 10 days
cold
for 10 days
for 1 day

500 for 3 days
500 for 10 .days
600 for 10 days

All tubers stored for 6 weeks at 700 before cold
tubers/6 in pots, planted after cold exposure

exposure. Two

b. Cultivars: Candidum and Scarlet Pimpernel

5. Comments: Experiment in progress

6. Project No. and Title: 401-7611-16040 (USDA work reporting unit) -
Improved methods for maintaining quality of cut flwoers and
nursery stocks during marketing

-29-

Location: Ornamental Horticulture Greenhouse

Experiment Title: Effect of coating on moisture retention in caladium tubers

1. Investigator: F. J. Marousky

2. Objective: To determine the influence of various wax coating on
Caladium tubers relative to moisture retention and growth

3. Cultural Data: Tubers dug 11/27/73, cleaned 11/28 and held at 750
for 9 weeks

4. Treatment
a. 1)
2)
3)
4)
5)
6)
7)

Variables:
No wax treatments
Dip in petroleum wax
Spray petroleum wax
Dip in meltin paraffin (122-1150F)
Dip in undiluted orange wax
Dip in diluted orange wax (1:1)
Dip in diluted orange wax (1 wax : 2 water)

b. Cultivars: Candidum and Scarlet Pimpernel

5. Comments: Experiment in progress. Petroleum wax was phytotoxic.

6. Project No. and Title: 401-7611-16040 (USDA work reporting unit) -
Improved methods for maintaining quality of cut flowers and
nursery stocks during marketing.

-30-

PHYSIOLOGY GREENHOUSE

S/,

_Li

LLU

E 8) Lu w
-LL LU

Lu--

Cl-J

CD,

-1=
<23LL

-31-

Location: Physiology Greenhouse

Experiment Title: Exp. No. 1 Toxicity of sodium fluoride and superphosphate
contained fluoride to Easter Lily

1. Investigators: S. S. Woltz and F. J. Marousky

2. Objective: To determine whether leaf scorch of Easter Lily may be
caused under various conditions by superphosphate fluoride
and sodium fluoride

3. Cultural Data:
Planted: Feb. 5, 1974
Replications: 8
Plot size: 1 bulb/6" pot

4. Treatment Variables:
a. Sand culture with
pH
.1) 5.0
2) 5.0
3) 5.0
4) 5.0
5) 6.8
6) 6.8
7) 6.8
8) 6.8

complete nutrient solutions
ppm Fluoride
0
5
15
45
0
5
15
45

b. Virgin Myakka fine sand

pH P205 Source

Rate (#/A)

Na Fluoride, #/A

5.0
6.5
5.0
6.5
5.0
6.5
5.0
6.5
5.0
6.5
5.0
6.5
5.0
6.5
5.0
6.5

Regular super
Regular super
Triple super
Triple super
Regular super
Regular super
Triple super
Triple super

Dicalcium
Dicalcium
Dicalcium
Dicalcium
Dicalcium
Dicalcium
Dicalcium
Dicalcium

650
2000
290
870
650
2000
290
870

phosphate
phosphate
phosphate
phosphate
phosphate
phosphate
phosphate
phosphate

5. Comments

6. Project No. and Title: GC-0001, Miscellaneous, non-projected research
with ornamental and vegetable crops

-32-

ORB HOUSE

-33-

Location: Land K, Structure #6 (ORB House), Bay I

Experiment Title:

Effect of irrigation-fertilizer application method,
nitrogen form, chrysanthemum cultivar, and insecticide-
fungicide program on insect population and plant growth

1. Investigators: J. L. Green and S. L. Poe

2. Objectives:

Evaluate the combined and individual effects of
nitrogen form, cultivar, irrigation method and
insecticide-fungicide programs on insect populations
and plant growth.

3. Cultural Data:
Planted rooted cuttings: Feb.
Lights Off: March 12
No. of Replications: 2
Plants/rep: 18
Water-fertilizer application:

3.2" water/week; 366 lbs N/A/crop

4. Treatment Variables:
a. Cultivars (4)
1) Improved Rivalry
2) Yellow Nobhill
3) Manatee Iceberg
4) Improved Indianapolis White

b. Irrigation-fertilizer application systems (2)
1) Viaflow under mulch
2) Overhead sprinkler application through Chapin spray stakes

c. Nitrogen Form (2)
1) 50% NH4+ + 50% NO3--Nitrogen = 42 ppm N

2) 100% NO3 -Nitrogen = 42 ppm N

d. Insecticide-fungicide programs (4)
1) Control
2) Maximum program = recommended rates weekly
3) Minimum program = 1/2 recommended weekly rates
4) Demand program = recommended rates only as needed

5. Comments: This experiment in conjunction with the other environmental
studies will aid in designing a total system for chrysanthemum
production requiring minimum applications of water, fertilizer,
and chemical pesticides

6. Project No. and Title: GC-01107 Macroelement nutrition of certain
floricultural crops and GC-01269 Biology and control of pests of
cut flowers

-34-
FIELD D
LAND

1971 UNSELECTED GLADIOLUS SEEDLINGS (Rows 1 6)

1971 UNSELECTED GLADIOLUS SEEDLINGS (R 7)

1972 UNSELECTED GLADIOLUS SEEDLINGS (Row 1 2)
1972 UNSELECTED GLADIOLUS SEEDLINGS (Rows 1 2)

2
1971 SEEDLING GLADIOLUS SELECTIONS (Rows 3-5)
GLADIOLUS BREEDING LINES (Rows 5 7)

GLADIOLUS BREEDING LINES (Rows 1 -4)
3
GLADIOLUS POSITION-FERTILIZER EXP. (Rows 5 7)

E W
GLADIOLUS POSITION-FERTILIZER ExP. (Rows 1 3)
4
GLADIOLUS MULCHING EXP. (Row 4)

OSMOCOTE ON GLADIOLUS CORMELS (ROws 5 7)

GARDEN CHRYSANTHEMUM FERTILIZER EXP. (Rows 1-2)

CELOSIA FERTILIZER ExP. (Rows 3 4)

OSMOCOTE ON GLADIOLUS CORMS (Rows 5 6)

ETHEREL + FUNGICIDES ON GLADIOLUS CORMS (Rows 1 3)

GLADIOLUS CORM DIPS WITH FUNGICIDES (ROW 4) 9

DOWICIDE B ON GLADIOLUS CORMS (Rows 6 7)

-35-

Location: Field D, Land 1-2, Rows 1-7 and 1-4, respectively

Experiment Title:

Exp. No. 1 Gladiolus Seedlings

1. Investigator: G. J. Wilfret

2. Objective: To evaluate gladiolus seedlings for their disease resistance
and use as landscape plants or commercial cut flowers

3. Cultural Data:
Planted: Jan. 23, 1974; fertilized monthly with 6-6-6 at 40# N/A

4. Treatment Variables: Numerous crosses among commercial cut flower
cultivars, northern garden and show cultivars, and disease
tolerant breeding lines from AREC-Bradenton

5. Comments

6. Project No. and Title: GC-01553 Breeding and Genetics of
Ornamental Plants

Location: Field D, Land 2-3, Rows 5-7 and 1-4, respectively

Experiment Title: Exp. No. 2 Evaluation of new gladiolus cultivars

1. Investigator: G. J. Wilfret

2. Objective:

To evaluate new gladiolus cultivars for their disease
for their disease resistance and use as landscape plants
or commercial cut flowers in Florida

3. Cultural Data:
Planted Jan. 25, 1974, fertilized monthly with 6-6-6 at 40# N/A

4. Treatment Variables: Numerous lines and cultivars

5. Comments:

6. Project No. and Title: GC-01553 Breeding and genetics of
ornamental plants.

-36-

Location:

PF Field D, Land 4, Rows 1-3
PF-F: Field D, Land 3, Rows 5-7

Experiment Title: No. 1 Corm position vs. fertilizer source on gladiolus
flower production

1. Investigators: G. J. Wilfret and J. L. Green

2. Objective:

To investigate the effect of corm position on flower
production and to evaluate the use of a constant release
fertilizer

3. Cultural Data:
Planted: Feb. 15 (PF); Feb. 18 (PF-F)
Plot Size: 10 feet, Aisles 5 feet
Corms/plot: 50
Corm size: Jumbo (Q1-3/4 in. diam.)
Replications: 3 (100, 200, 300)

4. Treatment variables:
a. Cultivar (2)
1) Peter Pears (PF)

b. Corm position (4)
1) Rightside up
2) Upside down

2) Friendship (PF-F)

3) Sideways
4) Random

c. Fertilizer (4)
10) No fertilizer
20) 75 # N/A as Osmocote 14-14-14 in furrow
30) 75# N/A as 6-6-6 sidedress (4 applications)
40) 160# N/A as 6-6-6 sidedress (4 applications)

5. Comments:

Previous work has shown that average spike height was
reduced approx. 1 in. when corms are planted upside down
as compared to rightside up. Osmocote 14-14-14 at
75# N/A applied in the furrow produced equivalent flowers
and corms as a total of 160 # N/A as 6-6-6 in 4 monthly
applications.

6. Project No. and Title: GC-01107 Macroelement nutrition of
certain floricultural crops

-37-

Location: Field D, Land 4, Rows 5-7

Experiment Title: Exp. No. 3 Constant release fertilizer on gladiolus
cormels

1. Investigator: G. J. Wilfret

2. Objective: To evaluate the use of a constant release fertilizer in
the production of gladiolus corms from cormels

3. Cultural Data:
Cultivar: T-590 Cormels/plot: 240 grams
Planted: Feb. 19, 1974 Cormel size: ')1/4 (3/8 in. diam.
Plot size: 8 feet Aisles: 5 feet

4. Treatment Variables:
a. Fertilizer placement (2)
10) in furrow
20) sidedress

b. Fertilizer rate (7)
1) 50# N/A as Osmocote 18-6-12
2) 75# N/A as Osmocote 18-6-12
3) 100# N/A as Osmocote 18-6-12
4) 125 # N/A as Osmocote 18-6-12
5) 150 # N/A as Osmocote 18-6-12
6) 175 # N/A as Osmocote 18-6-12
7) 200 # N/A as Osmocote 18-6-12

Extra plots
08) No fertilizer
09) Total 200 # N/A sidedress in 6 monthly applications

5. Comments: Preliminary results of earlier tests indicate 120-125 # N/A
of 18-6-12 in furrow produced high quality corms

6. Project No. and Title: GC-1107 Macroelement nutrition of certain
floricultural crops

-38-

Location: Field D, Land 4, Row 4

Experiment Title: Exp. No. 2 Mulching of Gladiolus Corms

1. Investigators: G. J. Wilfret and J. L. Green

2. Objective: To study the effect of a
flower production

3. Cultural Data:
Cultivar: Peper Pears
Planted: Feb. 18, 1974
Plot Size: 10 feet
Replications: 3 (100, 200, 300)

slitted plastic mulch on gladiolus

Corms/plot: 50
Corm Size: Jumbo
Aisles: 5 feet

(_ 1-3/4 in.)

4. Treatment Variables
a. Mulching (2)
1) Mulched

2) No mulch

b. Fertilizer source (4)
10) no fertilizer*
20) Osmocote 14-14-14 at 75# N/A in furrow
30) 6-6-6 sidedress at 75# N/A (1 application)
40) 6-6-6 sidedress at 160 # N

*11 = no fertilizer with mulch
12 = 6-6-6 at total 160 # N in 4 monthly appl.

5. Comments: Data presently not available for interpretation

6. Project No. and Title: GC-1107 Macroelement nutrition of certain
floricultural crops

Location: Field D, Land 5, Row 3-4

Experiment Title: Exp. No. 4 Production of celosia for flowers

1. Investigator: G. J. Wilfret

2. Objective: To determine the optimum fertilizer type and rate for
the production of celosia flowers

3. Cultural Data:
Seeded: Jan.
Transplanted:
Field: March
Plot size: 2

22, 1974
Feb. 5, 1974
6, 1974
x 6 feet

Spacing: 6 x 8 in.
Plants/plot: 32
Replications: 3 (1000,2000,3000)
Full fed mulch

4. Treatment Variables:
a. Varieties (3)
1) Golden fleece
2) Golden Triumph

b. Rates (4)
10) 50# N/A
20) 100 # N/A

3) Fiery feather

30) 150 # N/A
40) 200 # N/A

-39-

c. Fertilizer source (12)
100) 6-6-6 (30% organic) dry
200) 14-14-14 Osmocote

5. Comments: Data not available at present

6. Project No. and Title: GC-1107 Macroelement nutrition of certain
floricultural crops

Location: Field D, Land 5, Rows 1-2

Experiment Title: Exp. 5, Fertilizaton of garden chrysanthemums

1. Investigator: G. J. Wilfret

2. Objective: To determine the optimum fertilizer rate and source
for the growing of garden mums under a full-bed mulch

3. Planting Data:
Planted: March 4, 1974
Plot size: 3 feet
Aisle: 1 foot

4. Variables
a. Cultivars
01) Dolliette
02) Festive cushion
03) Fireside Cushion
04) Grandchild
05) Jackpot
06) Jess. Williams
07) Lipstick
08) Martian
09) Minn autumn

b. Fertilizer rate (2)
100) 75# N/A

Plants/plot: 6
Spacing: 1 foot square
Replications: 2 (10,000; 20,000)

Minn yellow
Penguin
Purple waters
Stardom
Starlet
Sunburst Cushion
Tinkerbell
Wh. Grandchild
Yellow Jess. Williams

200) 150 # N/A

c. Fertilizer source
1000) 6-6-6 (30% organic)
2000) 14-14-14 Osmocote

5. Comments: None available

6. Project No. and Title: GC-1107 Macroelement nutrition of
certain floricultural crops

-40-

FIELD C

LAND

COPPER SPRAYS ON GLADIOLUS (ROWS 1-2)

NITROGEN EFFECT ON GLADIOLUS CORM DORMANCY

FUNGICIDE DIPS ON GLADIOLUS (ROWS 1-2)

CURING OF GLADIOLUS (ROWS 4-5)

DOWICIDE B ON GLAfDIO UIS (ROWS 6-7)

ETHENEL ON GLADIOLUS (ROW 5)

-41-

Location: C25, Rows 1 and 2

Experiment Title: Copper spray injury to gladiolus

1. Investigator: R. O. Magie

2. Objective: To find a spray to control bacterial neck rot

3. Cultural Data: Planted Nov. 28, 1973, 3 reps of 12 ft plots

4. Treatment Variables:
a. Sprays applied weekly during Feb-March. Sprayed to run off.
1) Check, water
2) Citcop 4 pints/100 gal
3) Citcop 2 pints/100 gal
4) Citcop 2 pints + 2 pints Bravo 6F per 100 gal
5) Manzate 200 at 1 lb + Tribasic copper sulfate (improved)
at 3 lb/100 gal

5. Comments:

6. Project No. and Title: GC-01477 Etiology, symptomatology and
control of diseases of floral crops

Locaton: Land C30, rows 4 and 5

Experiment Title: Effects of temperature and air speed on curing of
gladiolus corms

1. Investigator: R. O. Magie

2. Objective: To determine optimal conditions to improve yields of
flowers and corms

3. Cultural Data: Planted Oct. 26 and Nov. 28, 1973, in Land C26
and C30, 20 corms per plot

4. Treatment Variables: Peter Pears jumbo, plots dug Feb. 20, 1974.
Friendship No. 4 flowers cut in March.

Curing treatments made June-July 1973; 5 temperatures, 66-920F;
2 air speeds, high and low; half of corms cleaned at harvest and
half of corms cleaned after curing; half cured 6 days and half
cured 12 days; 4 replications

5. Comments: Early flower cut was promoted by 6 days of curing and
cleaning after curing. Number of flowers was improved by only 6
days of curing and cleaning after curing. Temperatures made little
difference in number of flowers but the lowest yields were at
higher temperatures when cured for 12 days and with high air flow
and when cleaned at harvest. Corm production was not affected as
much as flowering but the same trends were found.

6. Project No. and Title: GC-00001 Non projected research

-42-

Location: C31, row 5 and D9 rows 1, 2 3

Experiment Title: Factorial experiment on effect of Ethrel and time of
application on gladiolus corm disease control with
Benlate and Dowicide B

1. Investigator: R. O. Magie

2. Objective: To improve disease control with Ethrel and reduce time
of dip to 1 minute

3. Cultural Data:
Planted: Large corms in C31 on Jan. 30, 23 No. 1 corms per plot.
Small corms and cormels in D9 on Feb. 4, 25 corms,
120 g and 67 g per plot, respectively

4. Treatment Variables:
a. Cultivars 10000 = No. 5 Friendship
20000 = No. 1 Friendship
30000 = Friendship cormels
40000 = Valeria cormels

b. Ethrel ai: 1000 none, 2000 150 ppm, 3000 1500 ppm ethephon

c. Time of Application: 100 Jan. 22, 200 Jan. 28
300 Jan. 29 at time of fungicide application

d. Fungicides: 10 none, 20 Benlate, 30 Dowicide B +
DuPont WK surfactant

e. Duration of dip at 240CL 1 1 minute ; 2 10 minutes

5. Comments: Emergence counts indicate retarded germination of corms
and cormels treated with the higher rate of Ethrel

6. Project No. and Title: GC-01518 Diseases of ornamental plants
caused by soil-borne pathogens

Location: D9, Row 4

Experiment Title: Test of new fungicides in control of Fusarium corm rot
of gladiolus

1. Investigator: R. O. Magie

2. Objective: To find effective treatments against Fusarium rot

3. Cultural Data:
Planted: March 14, 1974; 36 plots

4. Treatment Variables:
a. Cultivars
1) Friendship No. 5, 160 grams/plot
2) T-590 large cormels (125 g/plot) inoculated with Fusarium
with dug Oct 13
3) T-590 small cormels inoculated with harvested Oct 13

-43-

b. Fungicides as 15 minute dips
1-Control, none
2-Benlate 1-2/3 lb/100 gal
3-CGA 39896 (25 WP) 500 ppm
4-Bay Dam 18654 (50% WP) 500 ppm ai

5. Comments: No emegence as of March 19

6. Project No. and Title: GC-01518 Diseases of ornamental plants caused
by soil-borne pathogens

Location:

Corms in C31, Rows 6 and 7
Cormels in D9,Rows 6 and 7

Experiment Title: Effect of Dowicide B concentrations on sprouted Friendship
corms and cormels

1. Investigator: R. O. Magie

2. Objectives: Test of Dowicide B injury to exposed roots in comparison
to Benlate

3. Cultural Data:
Planted: Feb. 11 in 4 replications of each corm size and cormels

4. Treatment Variables:
a. Corm stocks: Sizes 3 and 4s, size 5 and 6 and cormels, all sprouted

b. 10-minute dips on day of planting
1) Check dry
2) Benlate 1-2/3 lb/100 gal
3) Dowicide B, 6 lb/100 gal
4) Dowicide B, 3 lb + 8 oz Spreader X-77
5) Dowicide B, 3 lb + 8 oz X-77 at 100F

5. Comments:

6. Project No. and Title: GC-01518 Diseases of ornamental plants
caused by soil-borne pathogens

Location: Land C30, Rows 1 and 2N

Experiment Title: Compatibility of Dowicide B and Busan 72A used alternately
in treating gladiolus corms

1. Investigator: R. 0. Magie

2. Objective: To determine whether these chemicals may be incompatible
with respect to disease control or plant injury

-44-

3. Cultural Data:
Planted: Dec. 6th, 30 corms per plot

4. Treatment Variables:
a. Cultivars obtained from Manatee Fruit Co Pink Friendship,
White Friendship and Peter Pears, jumbo corms treated with
Dowicide B at 1150F on June 5, 1973, removed from cool
storage on Dec. 5.

b. 10-minute dips on Dec. 6
1) None
2) Busan 72 at 1 oz per 4 gal
3) Busan 72 at oz per 4 gal
4) Benlate at 1 Ib per 100 gal

60 corms per treatment for each cultiv-r

5. Comments: Data not available yet but difference may not develop
until a second or third year of identical chemical
treatments on same corm lots

6. Project No. and Title: GC-01518 Diseases of ornamental plants
caused by soil-borne pathogens

Location: C25 South End

Experiment Title: Effect of nitrogen rate and time of application on dormancy
of cormels from No. 4 'White Friendship.'

1. Investigators: R. O. Magie and S. S. Woltz

2. Objective: To repeat and expand an experiment that showed reduced
dormancy as nitrogen rates were increased

3. Cultural Data:
Planted: Feb. 14, 1974
Plot size: 12 feet, 3 ft alleys
Corms per plot: 50 (1800 corms)
All plots received 390 g 14-14-14 Osmocote at planting

4. Treatment Variables
a. NH4N03 applications
1) None
2) 40.8 g/plot/week: 2, 4, 6, 8
3) 40.8 g/plot/week: 10, 12, 14, 16
4) 10.2 g/plot biweekly, 2 through 16
5) 20.4 g/plot biweekly, 2 through 16
6) 40.8 g/plot biweekly, 2 through 16

5. Comments: No data available

6. Project No. and Title: GC-01518 Diseases of ornamental plants
caused by soil-borne pathogens

-45-

METAL HEAD HOUSE

S

1 COLD STORAGE BOXES
2 LABORATORIES
3 POTTING AREA
4 STEAM SOIL STERILIZER
5 POST-HARVEST PHYSIOLOGY LAB

- ENTOMOLOGY LAB (UPSTAIRS)
- STORAGE AREA
- TISSUE PREPARATION
- REFRESHMENT ROOM
- GROWTH CHAMBERS

-46-

Location: Head House Area

I. Refrigeration Room F. J. Marousky

a. Demonstration of "conventional" packing for storage of
chrysanthemum cut flowers

b. Demonstration of hypobaric flower storage chambers

II. Post-harvest Physiology Laboratory F. J. Marousky

a. Demonstration of fluoride injury on cut flowers

b. Demonstration of effects of storage (conventional and
hypobaric) on gladiolus

c. Demonstration of effects of water quality on cut flowers
quality and longevity

d. Demonstration of effects of floral preservatives

THANKS FOR COMING

(AND REMEMBER TO BRING A FLORIDA FLOWER HOME TONIGHT)

GJW

NOTES