Group Title: Symposium
Title: Symposium : Florida's role in the development of tropical horticulture : Krome Memorial Section, Florida State Horticultural Society, November 6, 1969
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 Material Information
Title: Symposium : Florida's role in the development of tropical horticulture : Krome Memorial Section, Florida State Horticultural Society, November 6, 1969
Alternate Title: Florida's role in the development of tropical horticulture
Physical Description: 6 leaves : ; 28 cm.
Language: English
Creator: Florida State Horticultural Society
Donor: unknown ( endowment ) ( endowment ) ( endowment )
Publisher: Florida State Horticultural Society
Publication Date: 1969?
Copyright Date: 1969
Subject: Horticulture -- Research -- Congresses -- Florida   ( lcsh )
Tropical plants -- Research -- Congresses -- Florida   ( lcsh )
Genre: non-fiction   ( marcgt )
conference publication   ( marcgt )
 Record Information
Bibliographic ID: UF00094986
Volume ID: VID00001
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 - 436446352

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November 6, 1969

Hugh Popenoe, Vice-President

Plant Propagation, A Half Century of Progress in Florida

Roy 0. Nelson
Atlantic Fertilizer and Chemical Company
Homestead, Florida

The improvement of vegetative plant propagation techniques for in-
creasing tropical plants during the past 50 years in Florida, provided
the efficiency required for producing the plants for an extensive industry
in both fruit and ornamental crops.

Information on various techniques of plant propagation has been dis-
seminated to many areas of the world through the activities of the several
horticultural organizations in Florida, and from the exchange of ideas at
the annual meetings of the Tropical Region, A.S.H.S. which is held in
different countries each year. Professional plant propagators have also
done considerable amount of consulting work in many areas. Training courses
for local and for foreign students have been available at high schools and
universities in the State.

The 10 years after World War II was a period when considerable progress
was made In developing more refined methods for increasing plants economi-
cally by graftage and cuttings.

Management and Production Developments in Tropical and Sub-Tropical Fruits

Seymour Goldweber
Extension Agent Fruit Crops
Homestead, Florida

Changing management and production programs in the tropical and sub-
tropical fruit industry in South Florida are the results of development and
selection of new varieties, application of research results from various
governmental agencies and the growers themselves and pressures from increased
production costs.

Management and production programs Include more efficient land utili-
zation, mechanization where possible, and the future consumer acceptance
of the tropical commodities produced here.

Florida's Role in the Development of Tropical Horticulture--in Entomology
and Nematology

D. G. Wolfenbarger
University of Florida
Institute of Food and Agricultural Sciences
Sub-Tropical Experiment Station
Homestead, Florida

Entomologists and nematologists have been leaders in their fields of
endeavors for many years. Protection of Florida's horticultural crops
from insect pests and nematodes has been regularly achieved by workers in
these disciplines. The unique subtropical, geographical position of
Florida, has given opportunities to become acquainted with pests of neigh-
boring countries, although not all pests are distributed in the State.

Outside influences, pesticide regulations, have made the presentation
of regulations to growers more complicated. Increasingly greater demands,
however, are made by industry and others for trained men. Owing, there-
fore, to the positions Florida holds its role as leader in the fields of
horticultural plant protection endeavors offers much to help tropical

Role of Florida's Plant Pathology in the Development of Tropical Horticulture

R. A. Conover
Professor (Plant Pathology) and Head
University of Florida
Institute of Food and Agricultural Sciences
Sub-Tropical Experiment Station
Homestead, Florida

The Phytopathological programs of the University of Florida's Institute
of Food and Agricultural Sciences, the United States Department of Agricul-
ture, and Florida's Division of Plant Industry are discussed in relation
to plant disease problems in the Tropics. Most of the teaching and exten-
sion programs, much of the research work and regulatory activities could
be applied directly or readily adapted to phytopathological conditions in
the Tropics. It is concluded that Florida's plant pathology could make
substantial contributions to the development of tropical horticulture.

Florida's Role in the Development of Tropical Horticulture--
In Mineral Nutrition of Fruits

Simon E, Malo
Assistant Horticulturist
University of Florida
Sub-Tropical Experiment Station
Homestead, Florida

Problems associated with the nutrition of tropical fruit trees have
occupied horticulturists and soil scientists in Florida for nearly a
half century. Early in the 1900's it was found that fruit trees did not
grow and produce satisfactorily in the infertile Florida soils unless
properly cared for and periodically fertilized. This was particularly
true of Dade County whose soils, in addition to being shallow and cal-
careous, hold very low natural fertility. Nitrogen was shown to have
the greatest effect on tree growth and production. It was closely fol-
lowed by potassium and phosphorus. Magnesium was found to be needed in
most siils while calcium was deficient in acid sands only. Minor ele-
ment deficiencies particularly Cu, Zn, Mn and B have been Identified
and prevented. W'.ih the recent development of effective means of cor-
rect ;n: iro;; chlorosis, th-is deficiency can be satisfactorily controlled
In highly calcareous soils.

The results of these investigations are relevant and can be properly
applied to tropical area where mineral nutrition problems are likely to
occur in fruit trees.

Food Technology Developments Related to Tropical Horticulture in Florida

R. A. Dennison
Food S-,ience Departent, IFAS
Gainesville, Florida

Many of the horticultural crops produced in Florida are important
tropical fruit and vegetable crops. With the development of new processing
techniques and expanding markets for processed products, the major portion
of some crops are utilized through processing. Approximately 90 percent
of Florida's 1968-69 season or;: ge crop was processed. Approximately 53
percent of the 1967-68 lime crop was processed. In recent years more than
60 percent of the white potatoes produced within the state have been made
into chips. Florida is an important producer of fresh tomatoes but ap-
proximately 16 percent of this crop is processed as whole canned fruit.
Some of the tropical fruits are used in beverages and for ice cream

There is considerable need to investigate new methods of utilizing
the tropical horticultural crops. In many cases these crops are highly
perishable and cannot be shipped long distances. There are unusual quality
factors, such as flavor and color, which can be utilized in new product

Sub-Tropical Peaches and Nectarines

R. H. Sharpe
University of Florida, Gainesville, Florida

Florida has 2800 acres of commercial producing peaches and nectarines
in an area where the coldest month averages 58-620 F. (14.4 to 16.7 C).
This is a new Industry based on new varieties developed by breeding. These
varieties of low-chilling requirements have promise for highland areas in
the tropics and sub-tropical regions where high quality varieties have not
previously been available.

Tropical Fruit Varieties and Collections in Florida

John Popenoe
Fairchild Tropical Gardens
Miami, Florida

Important collections of tropical fruits In South Florida are des-
cribed. Many varieties have originated at or been distributed by the people
and agencies that maintain these collections. These varieties have made
a great contribution to fruit production in the tropics and will continue
to do so in the future.

Systematic Pomology

Wilson Popenoe
Ant igu, -Guatemala

Systematic pomology, the description of fruit varieties, their nomen-
clature and classification, seems to be receiving less and less attention
in the United States. There may be valid reasons for this, so far as
Temperature Zone fruits are concerned, but there is a real need for sys-
tematic pomology in connection with tropical fruits. This paper under-
takes to show that detailed technical description of varieties of the avo-
cado, mango, and numerous others, as well as their classification in groups
based on genetic characters, is of great value to growers in connection
with problems of climatic adaptations, vigor, productiveness, season of
ripening, and commercial as well as home use. The thesis is supported by
examples from Florida and elsewhere.

Florida's Past and Potential Contributions to the Changing Needs
of Latin American Horticulture

Ernesto H. Casseres
Inter-American Institute of Agricultural Sciences
Mexico City Office, Northern Zone

Florida is well-known for the excellent training provided to Latin
Americans, for its fine groves and advanced studies In tropical agriculture
at the University of Florida, and also for the support of Floridians to
cooperative scientific and educational organizations such as the Tropical
Region of ASHS. A great part of the tropics are suited to traditional
plantation crops, but there is a relative decline in this activity, with
an increasing interest in fruit, vegetable and ornamental production.
Technological, economic and social factors In Latin America point to the
need for expanding local and regional markets first for these diversification
products. Improvements in education and research in Latin America, the
increase In nationalism, and the development plans being drawn up for this
vast area, indicate that other kinds of horticulturists must also be trained
to work with the transportation and marketing interests as well as in pro-
duction, in concert with the needs of a fast-growing population and harmony
with the economic aspirations of both strong and weak countries.

Recent Developments in Tropical Fruit Crops

W. B. Storey
Department of Horticultural Science
University of California
Riverside, California

The first half of the present century witnessed the rise of the pine-
apple, the fig, date avocado, papaya, lychee, macadamia, passion fruit,
guava, acerola and a number of other tropical and subtropical fruits from
home garden fruits and horticultural curiosities to important commercial
crops in the United States. The ascendency of these crops can be attributed
in part to their adaptation to-the tropical and subtropical regions of the
United States and its territories and in part to work both by amateurs and
professionals on exploration, importation, selection, breeding, nutrition,
and disease and insect control.

Florida's 'ole in Tropical Horticulture

A. H. Krezdorn
Department of iruit Crops
University of Florida

Florida, because of its geographical position, is the only part
of the continental United States capable of producing a wide variety
of both temperate and tropical zone fruits on a commercial basis and
it is also a leader in the production of vegetables and ornamental
crops. Florida's location makes it uniquely accessible to the tropi-
cal areas of the Caribbean Islands, South and Central America. The
implication of these facts and the future role of Florida In tropical
horticulture are discussed.

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