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Horticulture
www.hort.iastate.edu
Jeffery K. Iles, Chair of Department
University Professors: Christians
Professors: Chaplin, Domoto, Gleason, Graves, Nonnecke, Taber
Professors (Emeritus): Bauske, Hall, Hodges
Associate Professors: Arora, Gladon, Hannapel, Iles, Minner, Stephens
Assistant Professors: Delate, Fei, Haynes, Lashbrook
Assistant Professors (Collaborators): Widrlechner
Instructors (Adjunct): Dilley, Gaul, Osborn
Undergraduate Study
For undergraduate curriculum in horticulture leading to the bachelor
of science degree, see Horticulture, Curriculum.
The horticulture curriculum is designed to permit commodity emphasis
in general horticulture, landscape horticulture, greenhouse management,
fruit production, vegetable production, nursery management, turfgrass
science and management, or horticultural communications and public
education. Students considering graduate degrees should participate
in the science option. Specialization options complete the educational
goal by combining one of the above interest areas with those skills
required in environmental horticulture, greenhouse management, fruit
and vegetable production and management, nursery crop production
and management, science option or science and turfgrass management.
Graduates possess the technical knowledge and skills to be a professional
horticulturist. They understand plant growth and development and
the culture and management of horticultural crops. They are able
to communicate clearly and work effectively with others in the many
disciplines of horticulture. Graduates understand the ethical and
environmental dimensions of problems and issues facing horticultural
professionals.
The rapidly expanding field of horticulture provides employment
opportunities in nurseries, seed companies, interior landscaping
firms, greenhouses, garden centers, conservatories, public gardens
and arboreta, orchards and vineyards, food processing companies,
or vegetable farms. The allied industries associated with horticulture
provide employment in the areas of sales, management, and communications.
Turf managers are needed for golf courses, athletic fields, sod
production, parks, and the lawn care industry. Further opportunities
exist in sod production, landscape development and maintenance,
and botanical gardens.
Opportunities also exist for further education in graduate school
to prepare for a career in research, teaching, and business.
Students have the option of selecting a secondary major in interdepartmental
programs: pest management, seed science, agricultural extension
education, environmental studies, or international agriculture (see
Index).
The department offers a minor in horticulture that may be earned
by taking Hort 221 plus at least 12 credits in horticulture at the
200 level or above.
Visit our departmental website at www.hort.iastate.edu
Graduate Study
The department offers master of science and doctor of philosophy
degrees with a major in horticulture, and minor work for students
in other departments. Under special circumstances a nonthesis master's
degree is available through the master of agriculture program.
Prerequisite to major graduate study is the completion of courses
covering horticulture, botany, and the underlying sciences.
Students majoring in horticulture usually will take minor work in
agronomy, botany (cytology, morphology, or physiology), biochemistry,
chemistry, entomology, food science and human nutrition, genetics,
plant pathology, or statistics.
There is no uniform foreign language requirement for either the
master of science or the doctor of philosophy degree.
The department also cooperates in the interdepartmental majors of
genetics; water resources; molecular, cellular, and developmental
biology, and plant physiology (see Index).
Graduates possess a broad understanding of horticulture and the
underlying plant sciences. They are able to communicate effectively
with members of the scientific community, industry groups, and the
general public. They are experienced in conducting and writing the
results of research. They are capable of addressing and solving
complex problems associated with the agricultural and plant science
professions. They understand the ethical, legal, social, and environmental
issues associated with modern agricultural practices.
Courses open for nonmajor graduate credit: 320, 320L, 351, 351L,
422, 434, 435, 436, 437, 442, 451, 453, 461, 471, 472, 493.
Courses Primarily for Undergraduate Students
Hort 110. Orientation in
Horticulture. (1-0) Cr. 1. F. Introduction to the field of
horticulture.
Hort 121. Home Horticulture. (2-0)
Cr. 2. F.S. Growing plants in and around the home including requirements
for growing house plants; plant propagation; designing and maintaining
flower, fruit, and vegetable gardens; lawn, tree, and shrub maintenance.
Hort 221. Principles of Horticulture.
(2-2) Cr. 3. F.S. Prereq: Biol 201. Biological principles
of growing horticultural crops including anatomy, reproduction,
light, temperature, water, nutrition, and growth and development.
Laboratory exercises emphasize environmental factors and permit
detailed observation of plant growth.
Hort 282. Educating Youth Through Horticulture.
(Same as AgEds 282.) (2-3) Cr. 3. S. Planning, developing, and implementing
science-based educational programs in a public garden setting. Through
hands-on experiences at Reiman Gardens, students will learn about
horticulture, learning theory, and the application of science principles
as they pertain to educating youth.
Hort 283. Pesticide Application Certification.
(Same as Ent 283.) See Entomology.
Hort 320. Horticultural
Plant Nutrition. (Same as Pl HP 320.) (2-0) Cr. 2. S. Prereq:
221 or Agron 114 or Biol 201 and Agron 154 or 155. Factors influencing
nutrient absorption and composition; criteria of essentiality and
roles of the elements; nutrient status and plant analysis techniques;
deficiency and toxicity symptoms. Nonmajor graduate credit.
Hort 320L. Horticultural Plant Nutrition
Laboratory. (0-2) Cr. 1. S. Prereq: 221 or Agron 114 or
Biol 201 and Agron 154 or 155. The laboratory emphasizes techniques
for determining plant nutritional status, water quality, and crop
monitoring. Students will utilize hands-on equipment for field measurement.
Nonmajor graduate credit.
Hort 321. Horticulture Physiology.
(2-0) Cr. 2. F. Prereq: 221 or Biol 201. Principles of plant
physiology relating to problems in horticulture including photosynthesis,
respiration, metabolisms, water relations, and developmental processes.
Hort 322. Plant Propagation. (2-2)
Cr. 3. S. Prereq: 221 or Biol 202. Fundamental principles
underlying sexual and asexual propagation of plants; practice in
reproducing plants by use of seeds, leaves, stems, and roots.
Hort 330. Herbaceous Ornamental Plants.
(2-2) Cr. 3. F. Prereq: 221. Identification, botanical characteristics,
origins, propagation, uses and general culture of herbaceous annual
and perennial plants.
Hort 332. Greenhouse Operation and Management.
(3-3) Cr. 4. S. Prereq: 221. Principles of greenhouse and
other controlled environment operation and management. Methods of
monitoring and manipulating environmental factors such as light,
temperature, fertility, production media, etc., to maximize production
rate and quality and minimize production costs and time. Field trips(s)
outside of scheduled class time required. Weekend/overnight field
trips may be required.
Hort 338. Seed Science and Technology.
(Same as Agron 338.) See Agronomy.
Hort 340. Woody Landscape Plants.
(3-6) Cr. 5. F. Identification, botanical characteristics, landscape
values, and culture of native and introduced woody plants. Emphasis
on plants used in managed landscapes in the Middle West. Field trip(s)
outside of scheduled class time required. Weekend/overnight field
trips may be required.
Hort 341. Woody Plant Cultivars: Shade Trees.
(1-1) Cr. 1. Alt. F., offered 2003. Prereq: 241. Nine-week
course beginning first week of semester. Students will learn how
to identify and care for the most horticulturally important shade
tree taxa suitable for the Midwest. Cultivars of the most prevalent
species also will be taught. Each class period will feature indoor
and outdoor sessions.
Hort 342. Landscape Plant Establishment and
Maintenance. (2-3) Cr. 3. F. Prereq: 241 or L A 321.
Principles and practices involved with establishment and maintenance
of woody ornamental plants in the landscape. Laboratory work involves
site evaluation, installation techniques, post-plant care, and maintenance
of established landscape plants.
Hort 344. Landscape Horticulture. (2-6)
Cr. 4. S. Prereq: 241 or Hort 233 recommended. Development
of residential, public and commercial landscape designs using design
principles and the process of design. Projects encompass site analysis,
program development, concept development, preliminary design, final
design, and graphic and presentation techniques. Students develop
master plans for residential sites, public gardens, and commercial
properties.
Hort 345. History and Development of Public Gardens. (2-0)
Cr. 2. Alt. S., offered 2004. Prereq: 221. In-depth presentation
of the history, establishment, development, and use of public gardens
nationally and internationally. Emphasis on relationship of gardening
to local, national, and international quality of life of society.
Hort 346. North American Public Gardens.
(2-0) Cr. 1 to 2. SS. Prereq: 221. Recitation about and field
trips to North American public gardens. No more than two (2) credits
of Hort 346 may be counted toward graduation. Tour/field trip expenses
paid by students.
Hort 351. Turfgrass Establishment and Management.
(Same as Agron 351.) (3-0) Cr. 3. F. Prereq: 221 or Agron 114
or Biol 201. Principles and practices of turfgrass propagation
and management. Specialized practices relative to professional lawn
care, golf courses, athletic fields, highway roadsides, and seed
and sod production. The biology and control of turfgrass pests.
Nonmajor graduate credit.
Hort 351L. Turfgrass Establishment and Management
Laboratory. (Same as Agron 351L.) (0-3) Cr. 1. F. Prereq:
Credit or enrollment in 351. Those enrolled in the horticulture
curriculum are required to take 351L in conjunction with 351 except
by permission of the instructor. Nonmajor graduate credit.
Hort 391. Horticultural Management Experience.
Cr. arr., maximum of 2. F.S.SS. Prereq: 221, permission of instructor.
A structured work experience for the student to gain insight into
management operations associated with production of horticultural
crops. A report of 10 or more pages describing the student's experience
is required. One credit is given for each term the student is enrolled
in the course. A maximum of two credits may be used toward the horticultural
sciences course requirements, and two additional credits may be
used toward the 128 credits required for graduation.
Hort 422. Postharvest Technology.
(3-3) Cr. 4. Alt. F., offered 2003. Prereq: 221, junior or senior
classification. Principles, methods, and techniques related
to postharvest maintenance of quality of horticultural commodities.
Emphasis on the effects of handling, storage facilities and techniques,
and quality evaluation. Field trips outside of scheduled class time
required. Weekend/overnight field trips may be required. Nonmajor
graduate credit.
Hort 423. Plant Tissue, Cell, and Protoplast
Culture. (Dual-listed with 523.) (1-2) Cr. 2. Alt. F., offered
2003. Prereq: Biol 301 and Hort 321 or Bot 320. Theory and
techniques of plant tissue culture, including organogenesis, somatic
embryogenesis, micropropagation, anther and embryo culture, protoplast
isolation and culture, and transformation. Applications to agriculture.
Hort 424. Sustainable and Environmental Horticulture
Systems. (Dual-listed with 524; same as Env S 424.) (2-0)
Cr. 2. F. Inquiry into ethical issues and environmental consequences
of horticultural cropping systems and production practices. Emphasis
on production systems that are resource efficient, environmentally
sound, socially acceptable, and profitable.
Hort 425. Horticultural Plant Breeding.
(Dual-listed with 525.) (2-0) Cr. 2. Alt. F., offered 2004. Prereq:
Biol 301 or Gen 320. Breeding techniques and methods required
for the improvement of horticultural plants.
Hort 433. Tropical and Foliage Plant Production
and Interiorscapes. (2-2) Cr. 3. Alt. S., offered 2005. Prereq:
221, 332. Identification, nomenclature, production, culture,
and use of tropical and foliage plants for interior landscapes.
Understanding plant needs in interior environments such as malls,
offices, atria, and lobbies. Planning, designing, installation,
maintenance, and selection of plants for interiorscapes. Field trips
outside of scheduled class time required. Weekend/overnight field
trips may be required. Nonmajor graduate credit.
Hort 434. Greenhouse Crop Production I. (3-3)
Cr. 4. Alt. F., offered 2003. Prereq: 330 and 332. Principles
and practices of greenhouse crop production. Emphasis is placed
on production of common bulbous, cut flower, and containerized flowering
species produced in greenhouses and other controlled environments.
Field trips outside of scheduled class time required. Weekend/overnight
field trips may be required. Nonmajor graduate credit.
Hort 435. Greenhouse Crop Production II.
(2-3) Cr. 3. Alt. S., offered 2004. Prereq: 330 and 332.
Principles and practices of greenhouse crop production. Emphasis
is placed on production of common flowering containerized and bulbous
crops and flowering annual and perennial crops. Field trips outside
of scheduled class time required. Weekend/overnight field trips
may be required. Nonmajor graduate credit.
Hort 436. Greenhouse Crop Production III.
(1-3) Cr. 2. Alt. F., offered 2004. Prereq: 221 and 332.
Principles and practices of greenhouse food crop production. Emphasis
is placed on production of vegetable, herb, and fruit species in
green houses and other controlled plant environments. Field trips
outside of scheduled class time required. Weekend/overnight field
trips may be required. Nonmajor graduate credit.
Hort 442. Nursery Production and Management.
(2-2) Cr. 3. Alt. F., offered 2003. Prereq: 221, 340. Cultural
and management practices involved with a production nursery: container
vs field nursery; nursery site and plant selection; propagation
and planting methods; soil and nutrient management; growth modification;
overwintering; financial and personnel management; marketing; shipping.
Field trip(s) outside of scheduled class time including weekend/overnight
trips may be required. Nonmajor graduate credit.
Hort 444. Landscape Construction.
(2-3) Cr. 3. F. Prereq: Junior or senior classification.
Theory and practice of landscape construction including estimation
methods, contract administration, construction materials, installation
of retaining walls, paving, edging, irrigation and site lighting.
Students take field trips to view various types of landscape installations
and use of building materials at area design/build firms. Encompasses
construction projects using various landscape materials and techniques.
Hort 445. Public Horticulture Management
and Administration. (2-0) Cr. 2. F. Prereq: 221, 345,
and 391. In-depth presentation and discussion of techniques
and requirements for the management and administration of a public
horticultural facility. Topics include oral and written presentation
skills, proposal development, public relations, budgeting, fundraising,
dealing with governing boards, interpersonal relationships and managing
horticultural operations.
Hort 451. Professional Turfgrass Management.
(2-0) Cr. 2. Alt. S., offered 2005. Prereq: 351. Turfgrass
science including the study of (1) specific information on soil
chemistry and soil modification as they relate to the development
and maintenance of turfgrass areas, (2) specialized management practices
used in athletic field care, professional lawn care and golf course
industries, and (3) construction methods for golf courses and athletic
fields. Nonmajor graduate credit.
Hort 452. Integrated Management of Diseases
and Insect Pests of Turfgrasses. (Dual-listed with 552; same
as Pl P 452, Ent 452.) See Plant Pathology or Entomology.
Hort 453. Sports Turf Management. (2-0)
Cr. 2. Prereq: 351. Management techniques for today's specialized
athletic fields. The horticultural and budgetary aspects of football,
soccer, baseball, and softball fields will be presented. Field trips
and laboratory exercises will develop a practical understanding
of actual principles in field development, construction, and management.
Nonmajor graduate credit.
Hort 461. Fruit and Nut Crop Production.
(2-2) Cr. 3. Alt. S., offered 2005. Prereq: 221. Principles
and practices of small fruit, tree fruit, and nut culture and production.
Morphology, physiology of growth and development, plant establishment,
pest management, pruning, training, harvesting, storage, and marketing.
Nonmajor graduate credit.
Hort 471. Vegetable Production and Management.
(3-0) Cr. 3. Alt. S., offered 2004. Principles and practices
of vegetable production. Methods of maximizing yield and quality
of vegetables. Harvesting, storage, and marketing. Nonmajor graduate
credit.
Hort 475. Community Tree Management.
(Same as For 475.) See Forestry.
Hort 490. Independent Study. Cr. arr.
Prereq: Senior classification in horticulture, permission of
instructor. A maximum of 4 credits of 490 may be used toward
the total of 128 credits required for graduation. Investigation
of topic holding special interest to the student. Comprehensive
report required. Election of course and topic must be approved by
department head.
A. Greenhouse Crops
B. Nursery Crops
C. Turfgrass
D. Fruit Crops
E. Vegetable Crops
F. Cross-Commodity
H. Honors
Hort 491. Seed Science Internship Experience.
(Same as Agron 491, AST 491.) Cr. 1-2. May be repeated once. F.S.SS.
Prereq: 338, advanced approval and participation of employer
and instructor. Staff. A professional work experience and creative
project for seed science secondary majors. The project requires
prior approval and participation of the employer and instructor.
The student must submit a written report.
Hort 493. Workshop in Horticulture.
Cr. arr. Off campus. Offered as demand warrants. Workshops in horticulture.
Nonmajor graduate credit.
Hort 495. Agriculture Travel Course Preparation.
(0-1) Cr. R. May be repeated. F.S.SS. Prereq: Permission
of instructor. Limited enrollment. Students enrolled in this
course also intend to register for Hort 496 the following term.
Topics include preparation for international travel, the horticultural/agricultural
industries, climate, crops, economics, geography, history, marketing,
soils, culture, traditions, and horticultural/agricultural development
of the country to be visited. Students enroll in this course the
term immediately before travel to the foreign country.
Hort 496. Horticulture Travel Course.
Cr. 1-3. May be repeated. F.S.SS. Prereq: Permission of instructor.
Limited enrollment. Study and tour of production methods in major
horticultural regions of the world. Influence of climate, economics,
geography, soils, landscapes, markets, cultures, and history of
horticultural crops. Location and duration of tours will vary. Tour
expenses paid by students.
Courses Primarily for Graduate Students,
Open to Qualified Undergraduate Students
Hort 511. Integrated Management of Tropical
Crops. (Same as Pl P 511.) See Plant Pathology.
Hort 523. Plant Tissue, Cell, and Protoplast
Culture. (Dual-listed with 423.) (1-2) Cr. 2. Alt. F., offered
2003. Prereq: Biol 301 and Hort 321 or Bot 320. Theory and
techniques of plant tissue culture, including organogenesis, somatic
embryogenesis, micropropagation, anther and embryo culture, protoplast
isolation and culture, and transformation. Applications to agriculture.
Hort 524. Sustainable and Environmental Horticulture
Systems. (Dual-listed with 424.) (2-0) Cr. 2. F. Inquiry
into ethical issues and environmental consequences of horticultural
cropping systems and production practices. Emphasis on production
systems that are resource efficient, environmentally sound, socially
acceptable, and profitable.
Hort 525. Horticultural Plant Breeding.
(Dual-listed with 425.) (2-0) Cr. 2. Alt. F., offered 2004. Prereq:
Biol 301 or Gen 320. Breeding techniques and methods required
for the improvement of horticultural plants.
Hort 529. Publishing in Plant Science Journals.
(2-0) Cr. 2. S. Prereq: Permission of instructor; evidence
of a publishable unit of the student's research data. Process
of preparing a manuscript for submission to a refereed journal in
the plant sciences. Emphasis on publishing self-generated data from
thesis or dissertation research.
Hort 530. Research Orientation. (2-0)
Cr. 1. F. Instruction in scientific methods and communication skills.
Hort 537. Environmental Stress Physiology.
(Same as Agron 537, Bot 537.) (3-0) Cr. 3. S. Prereq: Bot 320.
or equivalent. Physiology and molecular biology of plant responses
to environmental stress. Emphasis on the role of hormones and hormone
interations in governing stress reponses. Lectures are prepared
from journal papers that elucidate key mechanisms controlling reponses
to drought, flooding, salt, nutrient deficiencies, freezing, pathogens
and herbivores. Plants studied include genetic model systems and
crops of horticultural and agronomic value.
Hort 542. Introduction to Molecular Biology
Techniques. (Same as Zool 542.) See Zoology and Genetics.
Hort 546. Organizational Strategies for Diversified
Farming Systems. (Same as Agron 546, Soc 546, SusAg 546.)
(3-0) Cr. 3. Alt. S., offered 2004. Prereq: SusAg 509. Bell,
Liebman. Organization and operation of complex, diversified farming
systems. Topics include systems analysis, ecological diversity,
agronomic diversity, economic diversity, social diversity, analytical
frames for evaluating farming system sustainability, and problem-solving.
Participation in several field trips to Iowa farms is required.
Hort 551. Growth and Development of Perennial
Grasses. (Same as Agron 551.) (2-0) Cr. 2. Alt. S., offered
2004. The grass plant. Selected topics on anatomy, morphology, and
physiology relative to growth and development of perennial grasses.
Emphasis on growth and development characteristics peculiar to grasses
and variations of such characteristics under natural and managed
conditions.
Hort 552. Integrated Management of Diseases
and Insect Pests of Turfgrasses. (Dual-listed with 452; same
as Ent 452, Pl P 552.) See Plant Pathology or Entomology.
Hort 565. Professional Practice in the Life
Sciences. (Same as Pl P 565.) See Plant Pathology.
Hort 590. Special Topics. Cr. arr.
Prereq: A major or minor in horticulture.
Hort 593. Workshop in Horticulture.
Cr. arr. Workshops in horticulture, with emphasis on off-campus
instruction.
A. Greenhouse Crops
B. Nursery Crops
C. Turfgrass
D. Fruit Crops
E. Vegetable Crops
F. Cross-Commodity
Hort 599. Creative Component. Cr.
arr.
Courses for Graduate Students
Hort 610. Graduate Seminar. Cr. 1
each time elected. F.S.
Hort 615. Liquid Chromatography. (2-3)
Cr. 1. Second 5 weeks. Alt. F., offered 2003. Prereq: Permission
of instructor, graduate classification. Theory and application
of analytical liquid chromatography. Considerations in methods development:
column packing, particle size, solvent selection, isocratic vs.
gradient separation, solvent flow rate, detector choice, qualitative
component analysis, and data handling.
Hort 690. Advanced Topics. Cr. var.
Hort 696. Seminar in Plant Physiology and
Molecular Biology. (Same as Bot 696.) See Botany.
Hort 699. Thesis and Dissertation Research.
Cr. var.
A. Greenhouse Crops
B. Nursery Crops
C. Turfgrass
D. Fruit Crops
E. Vegetable Crops
F. Cross-Commodity
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