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Department of Tropical Plant and Soil Science (TPSS)
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St John 102
3190 Maile Way
Honolulu, HI 96822-2279
Tel: (808) 956-8351
Fax: (808) 956-3894

E-Mail: <tpss@ctahr.hawaii.edu>
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Careers in the Field Undergraduate Study Graduate Study
Instructional Faculty Option in Plant Sciences and Genetics Entrance Requirements
Cooperative Graduate Faculty Option in Plant Production and Management Transfer of Credits
Affiliate Graduate Faculty Option in Envrionmental Soil Science Graduate Committee
Degrees Offered/Program Goals Master's Degree
The Academic Program Downloadable PDF Program Brochure Doctoral Degree
Advising Available Courses for Graduate Degrees

Careers in the Field Click here to download a PDF brochure of this exciting program

Through the Plant Science and Genetics option, work as a research scientist, environmental scientist, teacher, consultant, research technician.

The Production and Management option prepares you for careers as a botanical garden horticulturist, consultant, extension agent, golf course superintendent, flower and foliage producer, garden center operator, florist.

The Environmental Soil Science option prepares you for work as a land reclamation specialist, consultant, natural resources scientist, environmental scientist, soil scientist, extension agent, technician.
Degrees Offered

BS, MS and PhD in Tropical Plant and Soil Sciences.

Program Goals

Upon graduation, students will be able to:

  • Integrate discipline- and thematic-specific knowledge of basic and applied plant and soil sciences to its application, analysis, and evaluation in the production, management, and improvement of managed and natural ecosystems.
  • Demonstrate an awareness of practices that minimize damage to the environment and ensure a safe food supply.
  • Perform competitively in the diverse professions available to them and to take advantage of the opportunities afforded by changing situations.

The Academic Program
The Tropical Plant and Soil Sciences (TPSS) program at UH Manoa is unique. Students have an opportunity to take courses in tropical flower, fruit, vegetable and crop production, turf and landscape management, plant physiology, breeding and genetics, and soil science. They learn about the full spectrum of subjects and activities required to understand and responsibly manage land, water, crops, and their environments for the benefit of humankind. In addition, they learn about the adaptation and application of new technologies, such as molecular biotechnology, computer-based systems, and the Internet, to enhance plant production systems, assure a safe food supply, and protect the environment.

Our students come from many backgrounds including those with little practical environmental or agricultural experience. They have in common a keen interest in applying science for the purpose of finding practical solutions to problems. Mature students are especially welcome. The comprehensive undergraduate program affords students the opportunity to study molecules to whole plants to managed or natural ecosystems, thus providing backgrounds to a host of career prospects. Students majoring in TPSS prepare for careers including plant production and management, plant breeding and genetics, services, marketing, extension, research, and teaching. UHM students trained in tropical plant and soil sciences have embarked on successful careers in international organizations and governmental agencies, in ecological and environmental protection, in agricultural extension, in individual entrepreneur including farming, and as middle and upper management in corporate agriculture. They work in increasing the food supply, improving food quality, and assuring food safety while protecting the environment and improving the quality of life. Undergraduates are encouraged to obtain practical experience, which involves research under the direction of a faculty member and work in a commercial industry via our internship program. Students have found satisfaction in applying their course work and research studies to challenging problems in business, environmental protection, land-use, and agricultural crop production.

Advising
Tropical Plant and Soil Sciences
St John Hall Room 102
3190 Maile Way
Honolulu, HI 96822-2279
Tel 808 956 8351
Fax: 808 956 3894
E-Mail: <tpss@ctahr.hawaii.edu>

Students are advised by the department’s undergraduate advisors: Dr Ken Leonhardt. Undergraduate options are detailed in the following section. Each student may identify a faculty member to act as a mentor in the student’s area of interest and specialization. All students in TPSS must receive approval of their program of courses from their advisers prior to registration each semester.

Graduate students are advised initially by an adviser or by the department’s graduate program chairman

Undergraduate Study

The program offers a BS degree in Tropical Plant and Soil Sciences with specializations in (1) Plant Sciences and Genetics, (2) Plant Production and Management, and (3) Environmental Soil Science. A student is required to complete 128 credits to graduate with a B.S. in TPSS.

Requirements

Students must complete the General Education Requirements (Core) of the University. An updated list of the courses recommended that satisfy the University General Education Requirement is available from the undergraduate adviser. The University’s Hawaiian/Second Language graduation requirement can be met by showing proficiency at the 202 level in a language, or showing proficiency at the 102 level in a language, plus one (3 Cr) course in Social Sciences and one (3 Cr) course in Natural Sciences, or taking two (3 Cr) courses in Social Sciences and two (3 Cr) courses in Natural Sciences. These courses may not be used to satisfy the University General Education Requirement. The Social Science and Natural Science courses chosen can be any 100 & 200 level courses offered at Manoa in those areas.

The College has a core consisting of the following three courses that will satisfy parts of the University General Education Requirement:
SP 151 or 251 Personal and Public Speech or Principles of Effective Public Speaking
NREM 310 Statistics in Agriculture and Human Resources
TPSS 492 Internship/directed studies (3 credits)

Students must complete the following three courses in the Department:
TPSS 200 Tropical Crop Science
TPSS 300 Tropical Crop Production Systems
TPSS 351 Enterprise Management

See the TPSS website for more undergraduate program information.


Option in Plant Sciences and Genetics
The option crosses the traditional boundaries that have separated genetics, plant physiology, molecular biology, and traditional crop production areas. The option links laboratory approaches and plant production systems through the application of plant biotechnology to solve multi-disciplinary problems. Students can select courses that allow concentration on genetic engineering to address real-world problems or to whole plant physiology and plant breeding.

Students selecting this option must take Biology 171/171L, 270/270L and 406/406L (or their equivalent), and Chemistry 16l/161L, 162/162L, 272/272L and 273 (or their equivalent). Some of these courses will fulfill part of the Natural Science requirement of the UH General Education Requirement. These courses are considered prerequisite to courses in the major.

Major (Option Courses)
Take a minimum of 14 credits from the following:
TPSS 440 Tissue Culture/Transformation
TPSS 450 Nutrient Mgmt Soils & Plants
TPSS 453 Plant Breeding and Genetics
TPSS 470/470L Plant Physiology
TPSS 499 Directed Study
BIOL 407/407L Molecular Biology
MBBE 402/402L or
BIOL 441/441L Principles of Biochemistry

Electives (variable number of elective credits)
While students may choose from the array of courses offered on the UH campus, an advising list of courses will be available to assist students in selecting courses that prepare students for a career in plant sciences and genetics.

The advising list includes courses in botany, chemistry, biology, physics, geography, business, history, and philosophy. Undergraduate advisers will assist students considering enrollment in graduate school in the selection of appropriate courses.


Option in Plant Production and Management
This option prepares students to produce, manage, and market plants grown as crops or in landscapes. The aim is to enable graduates to perform competitively in their chosen profession and to have a sufficiently broad educational background to take advantage of the opportunities afforded by changing situations.

Students selecting this option need to take Botany 101 and 101L (or their equivalent) or Biology 172 and 172L (or their equivalent) and Chemistry 15l and 151L and 152 and 152L (or their equivalent) to fulfill part of the Natural Science requirement of the UH core. These courses are considered prerequisite to courses in the major.

Major (Option) Courses
The major requires 12 credits from:
TPSS 369 Ornamental Plant Materials
TPSS 350/405 Tropical Landscape Practices / Turfgrass management
TPSS 401/403 Vegetable / Tropical Fruit production courses
TPSS 402/404 Flower / Tropical Foliage production courses
TPSS 430 Nursery Management
TPSS 420 Plant Propagation

The student must take 12 credits from following supporting courses for this option:
TPSS 304 Fundamentals of Soil Science
TPSS 322 Marketing Perishable Products
TPSS 450 Nutrient Mgmt Soils & Plants
TPSS 481 Weed Science
PEPS 363 General Entomology
PEPS 405 Plant Pathogens and Disease

Electives (variable number of elective credits)
While students may choose from the array of courses offered on the UH campus, an advising list of courses will be available to assist students in selecting courses that prepare students for a career in horticultural crop production and management.

The advising list includes courses in botany, chemistry, biology, physics, geography, business, and courses in other departments; PEPS, MBBE, and NREM. Undergraduate advisers will assist students considering enrollment in graduate school in the selection of appropriate courses.


Options in Environmental Soil Science
The Environmental Soil Science option will prepare students to effectively manage soil for the production of agricultural commodities and preserve this important natural resource for the benefit of man and the protection of the environment.

Students selecting this option need to take Botany 101 and 101L (or their equivalent) or Biology 172 and 172L (or their equivalent), Chemistry 15l and 151L and 152 and 152L or 161, and 161L and 162 and 162L (or their equivalent), Economics 130, Physics 151 and 151L, Business writing (English 209) and Calculus I - Mathematics 215. Some of these courses will fulfill part of the Natural Science requirement of the UH General Education Requirement. These courses are considered prerequisite to courses in the major.

Major Courses
The following courses need to be taken for this major:
TPSS 304 Fundamentals of Soil Science
TPSS 435 Environmental Soil Chemistry
TPSS 450 Nutrient Mgmt Soils & Plants
NREM 301 Natural Resource Management

Electives
Students must take 12 credits from following electives for this option:
TPSS 460 Plant Soil Atmosphere Physics
TPSS 499 Directed Study
NREM 461 Soil Erosion and Conservation
MICRO 485 Microbial Ecology
MET 101 Introduction to Meteorology
GEOG 101/101L The Natural Environment
ICS 101/ 101L Tools for the Computer Age
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Graduate Study
In order to solve the complex problems facing agricultural plant production systems, many disciplines must be integrated successfully. Candidates may specialize in genetics and breeding of tropical fruits, vegetables, or ornamentals; physiology, culture, and management of tropical fruits, vegetables, or ornamentals; morphogenesis; crop and stress physiology; post-harvest physiology; growth regulation; plant biochemical genetics; plant cytogenetics; weed science; computer modeling; or turf and landscape management, cropping systems, plant-soil relationships, soil chemistry, soil physics, soil management, soil and water conservation, soil fertility, and soil microbiology. Courses offered in botany, biochemistry, plant pathology, food science, genetics, microbiology, and zoology, combined with courses offered in Tropical Plant and Soil Sciences, will provide considerable flexibility in the development of a program suited to a student’s career objectives.

The department offers graduate study leading to the MS (Plan A, Plan B and Plan C) and PhD degrees. The TPSS graduate program offers a degree in Tropical Plant and Soil Sciences, and an option Tropical Plant and Soil Sciences (Horticulture). The degree emphasize the development of problem-solving skills that integrate molecular, biochemical, physiological, chemical, genetic and ecological approaches to collaborative research in plant and soil sciences.

The Topical Plant and Soil Sciences degree aims to provide the student with a thorough hands-on understanding of the principles and techniques in the adaptation and application of biotechnology to tropical crop plant production, and the role of soils in supporting the whole system of crop production systems. The option requires understanding of fundamental biological processes, molecular and organism biology, genetics, plant physiology, chemistry, physics, and microbiology. Soil is studied both for intrinsic properties, as well as, its role in supporting crop growth and as an environmental resource.

The Horticulture option explores the many facets of tropical food and ornamental crop production and requires the understanding of agricultural systems, plant production, soil fertility, and protection of the environment, as well as supporting disciplines such as crop ecology, plant physiology, and molecular biology.

The MS and PhD in Tropical Plant and Soil Sciences are recognized Western Interstate Commission for Higher Education (WICHE) regional graduate programs. Residents of Alaska, Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, North Dakota, Oregon, Utah, Washington, and Wyoming are eligible, upon admission, to enroll at Hawai’i-resident tuition rates.

Entrance Requirements
For admission to the TPSS graduate programs, applicants must present a bachelor's degree with a GPA of 3.0 (4.0 equals A scale) or the equivalent in the last four semesters or approximately 60 semester credits of the applicant’s undergraduate record. The GRE is required of all applicants. A minimum CBT TOEFL score of 173 is required of all foreign students. All applicants must submit 2 letters of recommendation at the time of application.

Transfer of Credits
The transfer of credits to meet the requirements of the MS or PhD is not automatic. The student must petition the Graduate Program Chairman, certifying that the transfers make programmatic sense and that the courses to be transferred are equivalent in rigor and scholastic content to graduate -level (600-level) courses offered at the University of Hawaii. The Graduate Program Chairman may consult with the Graduate Faculty as to the certification. The maximum number of credits that can be transferred is 12.

Only those credits that have not been applied towards the fulfillment of a previous degree may be transferred. An exception may be made if the subject matter area could not be met by course offering at UH, provided the courses transferred meet the rigor and programmatic appropriateness criteria described above.

Graduate Committee
Upon entering the graduate program, students will meet with their adviser. If a faculty adviser has not been selected, the Graduate Chairman or his representative will perform this function. The selection of an adviser must be made before the end of the first semester in residence. The adviser, with the approval of the Graduate Chairman, shall guide the student on course selection matters, insure progression in the program, and advise the student until the permanent Graduate Program Committee is established.

Students shall meet their permanent Graduate Program Committee at least once each semester to access academic and research progress and to establish goals for the next semester. It is the student's responsibility to schedule this meeting and to file the Academic Progress Report with the Graduate Chairman.

(See the TPSS website for more graduate degree information)


Master's Degree

Graduates of the Plan A program can further their graduate studies leading to the PhD degree or enter careers as researchers and technicians, while graduates of the Plan B program typically enter careers in education, agribusiness, extension service, and other agriculturally related occupations. The Plan B is regarded as terminal degree in this Graduate Program. Plan C (examination) option is open to selected students on the recommendation of their graduate program committee. Criteria for selection of Plan C candidates include previous academic records, interviews, levels of performance in the diagnostic examination, and prior research experience.

Requirements
Students will take a written diagnostic examination the week preceding the first day of instruction. The diagnostic examination consists of questions in eight areas including botany, chemistry, biochemistry, mathematics, physics, crop science, statistics, and soil science. The results of this examination will be used by the student’s graduate committee, with approval of the Graduate Program Chairman, to select additional courses for the students program.

Plan A students must complete a minimum of 24 credit hours of course work and 6 credit hours of thesis preparation. A final oral examination is required. For Plan B students must complete a minimum of 30 credit hours, including a minimum of 18 credit hours earned in courses numbered 600 to 798 of which a majority must be in Tropical Plant and Soil Sciences. A maximum of 6 credit hours (Plan B) or 2 credit hours (Plan A) in TPSS 699 may be credited towards the 30 credit hours applied.

All students must take TPSS 654 as soon as possible after beginning their studies and register for seminar (TPSS 667) once every academic year in which they are registered as full-time or equivalent, except the final semester, in which the dissertation defense or Plan B project report is given, can be substituted for seminar.


Doctoral Degree

Graduates of the PhD program have entered careers as researchers and/or educators in institutions of higher learning and in public and private institutions.

The PhD is awarded only for original scholarly achievement. The dissertation, which is a significant original contribution to basic knowledge in the candidate’s field, is required. Only students with above average academic records in pre-doctoral programs will be accepted in the program.

Requirements
Students will take a written diagnostic examination the week preceding the first day of instruction of their first semester as a TPSS graduate candidate. The diagnostic examination consists of questions in eight areas including botany, chemistry, biochemistry, mathematics, physics, crop science, statistics, and soil science. The results of this examination will be used by the student’s graduate committee, with approval of the Graduate Program Chairman, to select additional courses for the students program.

Course requirements are established by the student’s graduate committee. Following a preliminary conference with the program advisor and/or committee, and with the approval of the Graduate Program Chairman, the student will be officially advanced to candidacy. After admission to candidacy and the completion of most courses in the candidate’s program, the candidate must take oral comprehensive examinations covering all subjects considered relevant to the concentration. A seminar on the proposed research topic may be also required by the student’s permanent committee. A final oral examination, which includes a public defense of the dissertation, is required of all candidates.

For all PhD students, a minimum of 12 credit hours in courses numbered 400 or above is required for the major, not including seminar, directed research, thesis/dissertation research, Candidates must register for seminar (TPSS 667) once every academic year in which they are registered as full-time or equivalent, except the final semester, in which the dissertation defense can be substituted for seminar. PhD candidates who have not had TPSS 654 Communications in the Sciences or its equivalent must take this course during their first year as a substitute for one semester of TPSS 667.


Courses Available for Each Option
Tropical Plant and Soil Sciences:
TPSS 500 Master's Plan B/C Studies
TPSS 601 Crop Modeling
TPSS 603 Experimental Design
TPSS 604 Advanced Soil Microbiology
TPSS 610 Mineral Nutrition Tropical Crops
TPSS 614 Cellular Genetics of Crops
TPSS 615 Quantitative Genetics
TPSS 640 Advanced Soil Chemistry
TPSS 650 Advanced Soil Fertility
TPSS 651 Techniques of Plant/Soil Analysis
TPSS 654 Communications in Agriculture
TPSS 667 Graduate Seminar
TPSS 674 Plant Growth & Development
TPSS 699 Directed Research
TPSS 700 Thesis Research
TPSS 711 Special Topics
TPSS 800 Dissertation Research
MBBE 620 Plant Biochemistry
MBBE 670 Plant Cell Physiology
MBBE 673 Organization and Expression of the Plant Genome
MBBE 680 Methods in Plant Molecular Biology
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Tropical Plant and Soil Sciences – Horticulture
TPSS 500 Master's Plan B/C Studies
TPSS 601 Crop Modeling
TPSS 603 Experimental Design
TPSS 604 Advanced Soil Microbiology
TPSS 610 Mineral Nutrition Tropical Crops
TPSS 614 Cellular Genetics of Crops
TPSS 615 Quantitative Genetics
TPSS 630 Advanced Perishable Marketing
TPSS 631 International Perishable Marketing
TPSS 640 Advanced Soil Chemistry
TPSS 650 Advanced Soil Fertility
TPSS 654 Communications in Agriculture
TPSS 667 Graduate Seminar
TPSS 664 Orchidology
TPSS 674 Plant Growth & Development
TPSS 699 Directed Research
TPSS 700 Thesis Research
TPSS 711 Special Topics
TPSS 800 Dissertation Research

Instructional Faculty
*R. E. Paull, (Chair) PhD - plant growth & development, postharvest handling
A. S. Arakaki, BS - junior extension agent, fruit and vegetable production
R. Arce, BS - junior extension agent, community development, agricultural production
*H. C. Bittenbender, PhD - coffee, kava and tropical fruit physiology and management
*J. L. Brewbaker, PhD - plant breeding, biochemical genetics
*C. G. Cavaletto, MS - sensory evaluation, food processing
I. S. Campbell, PhD - crop management, information systems
*C. L. Chia, PhD - tropical fruits
*R. A. Criley, PhD - floriculture, flowering physiology, plant propagation
*J. DeFrank, PhD - weed science
*K. D. Fleming, PhD - agribusiness management
S. K. Fukuda, MS - Extension agent, vegetable production
*M. Habte, PhD - soil microbiology-biochemistry
C. S. Hashimoto, MS - extension agent, fruit production
*A. S. Hodgson, PhD-food technology extension, food safety and quality
*N. V. Hue, PhD - soil chemistry
*K. D. Kobayashi, PhD - fruit physiology and computer modeling
*B. A. Kratky, PhD - vegetable physiology and management
*A. R. Kuehnle, PhD - ornamental breeding and genetics
*K. L. Leonhardt, PhD - floriculture
*R. M. Manshardt, PhD - tropical fruit breeding and genetics
*K. Marcum, PhD - turfgrass management
*S. C. Miyasaka, PhD - alternative crops, plant nutrition
*M. A. Nagao, PhD - development physiology, growth regulation
M. S. Nishina, MS - associate extension agent, tropical fruit production
*Y. Sagawa, PhD - developmental morphology, cytogenetics, tissue culture
D. Sato, MS - educational specialist, urban horticulture
*T. Sekioka, PhD-vegetable breeding and genetics
*J. A. Silva, PhD - soil fertility and soil chemistry, statistics
*P. Singleton, PhD - crop physiology, nutrient management
V. E. Smith, MS - assistant extension agent, fruit and ornamental production
*K. Y. Takeda, PhD - breeding solanaceous crops
G. I. Teves, BS - junior extension agent, ornamentals production
*G. Uehara, PhD - systems simulation in international agriculture
*H. R. Valenzuela, PhD - vegetable physiology and management
W. K. Wong, PhD - extension agent, landscaping and nursery management
R. M. Yamakawa, MS - associate extension agent, ornamentals production
*R. S. Yost, PhD - expert systems in soil management, fertility

Cooperating Graduate Faculty
*R. S. de la Pena, PhD - crop management, root crops
*S. A. El Swaify, PhD - soil and water conservation, salinity
*C. I. Evensen, PhD - water quality extension, environmental education
*S. C. Furutani, PhD - horticultural crop physiology
*M. K. Kawate, PhD - pesticide registration/weed science
*R. K. Nishimoto, PhD - weed science
*W. S. Sakai, PhD - ultrastructure, physiological plant anatomy
*M. J. Tanabe, PhD - in vitro propagation, turf management, plant propagation

Affiliate Graduate Faculty
*H. Albert. PhD - plant biotechnology, gene regulation
*H. T. Chan Jr., PhD - food processing, plant biochemistry
*M. M. M. Fitch, PhD - tissue culture, genetic engineering
*J. J. McHugh, PhD - vegetable management, integrated pest management
*P. Moore, PhD - plant development, sugar metabolism
*R. R. G. Ming, PhD - plant genomics, plant breeding
*C. N. Nagai, PhD - sugar cane genetics and tissue culture
*R. V. Osgood, PhD - weed science
*D. Ragone, PhD - ethnobotany, conservation
*C. Smith, PhD - soil classification and development
*F. Zee, PhD - plant breeding, genetics

* denotes Graduate Faculty

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Last updated on 1/13/2004
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