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Doctor of Philosophy in Horticulture


Brief Description of the Major Field

The PhD HORT is a thesis program of the Crop Science Cluster. Students under the PhD HORT program is expected to have a firm grasp of the underlying principles and practices in various fields of specialization in horticulture. Students are trained to conduct researches that go beyond correlative comparisons but also to determine the causative mechanisms for these. Under the program, a student may specialize in one of the six areas of study.

Prospective Students

An applicant for admission to PhD HORT program must be a holder of an MS degree in a biological field. A holder of an MS degree in a non-biological field must seek admission first to MS HORT or other related programs.



Graduates of the program may be tapped as teaching staff, researcher, or extension agent in agriculture colleges/universities, or as scientist at local and international research centers. A number of graduates are also employed at the Department of Agriculture and its attached agencies. Private institutions (e.g. multinational agricultural and chemical companies) also hire graduates as marketing specialist, technical staff, manager/supervisor, or consultant. Some graduates are also into entrepreneurial pursuits, managing own farms or other business units.



Under the PhD HORT program, a student may specialize in any of the following areas of study: 

  • Crop Physiology
  • Crop Breeding
  • Crop Production and Management/Farming Systems
  • Propagation and Nursery Management
  • Embryology/Tissue Culture
  • Postharvest Horticulture 


Requirements and Mechanics to Graduate

The PhD HORT program requires a minimum of 37 units, these are: 15 units of major courses, 9 units of cognatecourses, 1 unit of seminar (HORT 299) and 12 units of dissertation (HORT 400).

Major courses vary depending on the field of specialization  Courses for PhD students specializing in crop production and management: DM 210, PPTH 202, ENT 170 and
HORT 231
For Propagation and Nursery Management: DM 210, PPTH 202, BOT 210, and HORT 231
For Embryology and Tissue Culture: DM 210, PPTH 202, ENT 170 and HORT 231
For Crop Physiology: DM 210, BOT 220, HORT 220 or HORT 230 or HORT 231
For Postharvest: DM 210, CHEM 102, CHEM 260 and BOT 210

Some guidelines

A foundation or core course need not be included in the program of study if the course has been taken by the student at UPLB. If an equivalent course was taken outside UPLB, the student must pass a validating examination. Determination of equivalence shall be the prerogative of the academic department offering the course.

A student entering the PhD program in Horticulture must have taken the prescribed core course for MS in Horticulture or their equivalent, otherwise, they should register the courses but cannot be considered as core or major courses for PhD.

To satisfy the minimum number of units required for the major field, the student with the guidance of the adviser, may choose from the several related course offered by UPLB.


Graduate Courses

HORT 209. Postharvest Physiology of Perishable Crops (3). Physical and physiochemical changes in perishable crops after harvest; mechanisms and control of deterioration. 5 hrs (2 class, 3 lab). PR. HORT 109.1. (2)

HORT 220. Applied Vegetable Crop Physiology (3). Effects of different environmental factors on the growth and development of various vegetable crops. 5 hrs (2 class, 3 lab). PR. HORT 132/BOT 132 or COI. (2)

HORT 230. Applied Fruit Crops Physiology (3). Environmental factors, cultural treatments, and growth regulators that modify basic processes controlling flowering and fruiting of fruit crops. 5 hrs (2 class, 3 lab). PR.

HORT 130 and HORT 132/BOT 132 or COI. (2)

HORT 231. Reproductive Crop Physiology (3). The flowering process and its associated phenomena of photoperiodism, vernalization, thermoperiodism, and endogenous rhythm, sex expression, fruit-set and development and their control mechanism. 5 hrs (2 class, 3 lab). PR. HORT 132/BOT 132. (1)

HORT 232/BOT 232. Physiology and Biochemistry of Endogenous Growth Regulators (3). Physiology, biochemistry, transport, mode of action, assay and applications of endogenous growth regulators in agriculture. 5 hrs (2 class, 3 lab). (jointly offered with Botany of the College of Arts and Sciences). PR. COI.

HORT 234. Crop Seed Physiology (3). Seed development, dormancy, germination, and other physiological processes associated with seed production and storage of economically important crop plants. 5 hrs (2 class, 3 lab). PR. COI. (1)

HORT 241. Plant Morphogenesis (3). Processes involved, categories of the factors affecting morphogenetic phenomena and their implications on plant development and propagation. 5 hrs (2 class, 3 lab). PR. HORT 132/BOT 132. (1)

HORT 290. Special Problems (1-3). May be taken twice provided that the total number of units to be credited to the student’s program will not exceed 4 units. PR. COI. (1,2,S) 

HORT 291. Special Topics (1-3). May be taken twice provided that the total number of units to be credited to the student’s program will not exceed 4 units. PR. COI. (1,2,S)

HORT 299. Graduate Seminar (1). May be taken twice.

HORT 300. Master’s Thesis (6). (1,2,S)

HORT 400. Doctoral Dissertation (12). (1,2,S)


Faculty Information


Highest Educational Attainment

Faculty Rank



Edna A. Aguilar


Associate Professor

Farming Systems, Crop Production and Management


Domingo E. Angeles



Crop Production  and Management, Crop Physiology


Susan C. Aquino-Ong


Assistant Professor

Landscape Architecture, Planning and Design, Environmental Science (Agroforestry)


Amihan L. Arquiza


Assistant Professor

Ornamental Horticulture, Crop Production and Management


Evalour T. Aspuria


Associate Professor

Crop Physiology, Tissue Culture


Nestor D. Bondad



Crop Physiology, Crop Production and Management


Ma. Lourdes O. Cedo


Associate Professor

Plant Physiology, Plant Growth Regulation


Constancio C. De Guzman



Plant Physiology, Plant Growth Regulation, Urban Agriculture


Elda B. Esguerra


Associate Professor


Postharvest Horticulture

Rene Rafael C. Espino



Fruit Crops Breeding and Genetics, Crop Production and Management


Renato C. Mabesa



Seed Technology, Plant Nutrition, Vegetable Production


Leon O. Namuco



Plant Breeding and Genetics, Fruit Crop Production and Management, Plant Genetic Resources


Calixto M. Protacio



Crop Physiology, Mango Production, Plantation Crop Production


Bong M. Salazar


Assistant Professor

Crop Physiology, Postharvest Physiology


Fernando C. Sanchez Jr.


Associate Professor


Landscape Architecture

Edralina P. Serrano



Postharvest Physiology/Biochemistry, Agricultural Chemistry, Food Science


Josephine U. Agravante


Research Assistant Professor


Postharvest Horticulture

Perlita A. Nuevo


Research Assistant Professor

Postharvest Horticulture, Botany, Morpho-Anatomy


Contact Information

Key Person: Dr. Jose E. Hernandez, Director, Crop Science Cluster

Phone Number:  536-2448; 536-2468

Email Address: [email protected]





 Source: UPLB website

The UPLB Graduate School marked milestones with the launching of two new masters-level degree programs and the celebration of its 42nd founding anniversary on December 1.

At the Thanksgiving Dinner-Fellowship held at the Graduate School multi-purpose hall, UPLB Chancellor Fernando C. Sanchez, Jr. led the launching of the Master of Science in Entomology, an off-campus program implemented in partnership with ANFLO Management and Investment Corporation (ANFLOCOR) in Panabo City, Davao del Norte. He also relaunched the Professional Masters in Tropical Marine Ecosystem Management (PM-TMEM), a joint program with the UP Marine Science Institute (MSI) of UP Diliman and UP Visayas.

read more

Article by Mark Jayson E. Gloria, UPLB website

UP President Alfredo E. Pascual enjoined the UPLB graduate education faculty to intensify the internationalization of graduate programs during the Graduate Faculty Conference on Feb. 15 at the Tagaytay International Convention Center. Pascual, who gave the keynote speech during the Conference, said that UP’s mandate as a research, graduate, and regional/global university are intertwined and interrelated. He also commended UPLB’s tradition of excellence as a graduate and research university, especially in agriculture, forestry, veterinary medicine, and biotechnology.

read more

Posted on March 4, 2015 by upweb_wordpress in In the News, Article by Jo. Florendo B. Lontoc, photos by Abraham Arboleda

Responding to the mandates officially spelled out in Republic Act 9500 or the new UP System Charter of 2008, which elects UP to be a research and graduate university, among other roles, the UP Los Baños Graduate School convened a faculty conference to plot the path of the school to the future. The conference titled “Responding to the Challenges of a Research and Graduate University” was held on February 15 and 16, 2015 at the Tagaytay International Convention Center. It was attended by around 260 participants consisting of junior and senior graduate faculty members, committee chairs of degree-granting units, college deans, institute directors, department chairs, and heads of UP campuses.

read more

What was once a silent and unoccupied area at the back of the Graduate School (GS) Building will soon become the site of a modern hub for graduate and international students of UPLB.

It will be called the Graduate School International Student and Cultural Center Building, as officially announced during the groundbreaking ceremony on Dec. 2.

UP System, UPLB, and Nagoya University bigwigs were present during the occasion, which served as one of the highlights of the School’s 43rd founding anniversary.

               UP President Alfredo E. Pascual and Vice-President for Legal Affairs Hector Danny D. Uy joined UPLB Chancellor Fernando C. Sanchez, Jr., Graduate School Dean Jose V. Camacho, Jr., and Vice Chancellor for Academic Affairs Portia G. Lapitan in the traditional groundbreaking ceremonies. read more

UP and Nagoya University (NU), through President Alfredo E. Pascual and UPLB Chancellor Fernando C. Sanchez, Jr. and NU President Seiichi Matsuo, respectively, have inked an agreement for UPLB to host the Nagoya University Asian Satellite Campus (NUASC) through the UPLB Graduate School.

This agreement makes the Philippines the eighth country to host the NUASC through which the Transnational Doctoral Programs for Leading Professionals in Asian Countries will be implemented. This will enable Filipino doctoral candidates to enroll in NU doctoral programs without having to be physically present in Nagoya for the whole duration of the course.

The agreement was formalized at the Executive Conference Room in BM Gonzalez Hall, UPLB on Dec. 2. Dr. Jose V. Camacho, Jr., dean, Graduate School and Dr. Fumio Isoda, director, Nagoya University Asian Satellite Campuses Institute, served as witnesses of the signing of the memorandum of agreement (MOA). read more

UPLB and Nagoya University (NU) formally opened the NU satellite campus in the Philippines and held the International Symposium on the Internationalization of Graduate Education at Acacia Hotel in Alabang, Muntinlupa City on March 8.

UPLB Chancellor Fernando C. Sanchez, Jr.  said in his message during the opening program that to be a globally competitive research and graduate university, UPLB must pursue joint programs and collaborative activities with international academic and research institutions. He cited as an example the Philippines Transnational Ph.D. Program for Leading Professionals in Asian Countries being implemented by UPLB and NU.  

UP President Alfredo E. Pascual added that the program takes the University to a higher level and a step closer to being a globalized institution in terms of research and graduate education.  It will also allow experts to build lifelong partnerships with NU without leaving the country. He issued a challenge for UPLB to become a leader in global intellectual conversations of tomorrow. read more

The Graduate School (GS) and the College of Public Affairs and Development (CPAf), together with UP Mindanao, launched the Mindanao Development Studies Seminars (MDSS) on May 13-14 at UP Mindanao, Davao City. 

The MDSS aims to stimulate critical discussion about contemporary issues and challenges affecting the development of Mindanao. 

Dr. Portia G. Lapitan, vice chancellor for academic affairs who delivered a speech on behalf of Chancellor Fernando C. Sanchez, Jr. reiterated the importance of Mindanao in the development of the country. She expressed her hopes that through the MDSS, participants would gain a more thorough insight of the issues affecting Mindanao.

“It is also my hope that this seminar would pave the way for scholars to engage in further discourse about Mindanao’s key concerns and strive to influence national policies that would benefit the people of Mindanao,” she added. read more


The Graduate School will hold its Hooding and Recognition Ceremony on June 24 at the DL Umali Freedom Park. During this occasion, the students who will have finished their doctoral program will be conferred their degrees through a ceremony in which their academic regalia (hoods) would be put on them by their advisers and University officials led by Chancellor Fernando C. Sanchez, Jr and Dr. Jose V. Camacho, Jr., dean of the Graduate School.

The guest of honor and keynote speaker for this year’s ceremonies is Dr. Chamnian Yosraj, president of Maejo University in Thailand. Dr. Yosraj is a UPLB alumnus, having earned both his MS and Ph.D. degrees in Animal Science in 1983 and 1990, respectively. read more

The UPLB Graduate School (GS) held its 2016 Hooding and Recognition Ceremonies on June 24 at the DL Umali Freedom Park. Of the 279 graduates, 229 obtained master’s degrees and 50 earned doctorate degrees.

In his opening remarks, Chancellor Fernando C. Sanchez, Jr. expressed confidence that the graduates will exceed expectations around them. “UPLB has prepared you to become leaders who have the intellectual capacity and the heart to contribute to your respective communities,” he said.  He also encouraged the graduates to use the knowledge they gained from the University not only in pursuing academic and intellectual endeavors, but also in addressing social concerns. read more

“How do you thank your benefactors? How do you thank the Filipino taxpayers? How do you thank the Filipino people as a whole?” asked UP President Alfredo E. Pascual to the 2,245-strong UPLB Class of 2016 on June 25 at the DL Umali Freedom Park.

President Pascual was the keynote speaker during the 44th Commencement Exercises of UPLB that started at six o’clock in the morning, a deviation from the usual afternoon-to-evening ceremonies in the University. He was introduced by Chancellor Fernando C. Sanchez, Jr. read more

UPLB and Kobe University (KU) in Japan have signed a memorandum of understanding (MOU) to jointly develop academic programs and projects that will benefit both in their instruction, research and training programs.

The MOU, which covers a 5-year period, was signed by KU President Hiroshi Takeda on March 23 in KU while UPLB chancellor, Dr. Fernando C. Sanchez, Jr. signed it on April 21 at the BM Gonzalez Hall in UPLB. read more

UPLB, through the Graduate School (GS) and the College of Economics and Management (CEM) has launched the off-campus Master of Management program for employees of the Procurement Service of the Department of Budget and Management (PS-DBM) at the DBM headquarters in Paco, Manila on Nov. 26.

PS-DBM has provided partial scholarships to its deserving employees who will be on the MMgt program that is being implemented by UPLB for continuing organizational development in the former. According to Atty. Tomas C. Syquia, executive director of PS-DBM, “to be the best, we must be taught by the best,” referring to the choice of UPLB as the partner institution. read me

In celebration of its 37th anniversary, the International Students Association (ISA), in cooperation with the International Student Services of the Office of Student Affairs (OSA), staged its annual cultural night at the DL Umali Hall on Oct. 14.

According to Dr. Nina Cadiz, OSA director, the event was “meant to promote the welfare and cooperation of foreign students in UPLB and to promote the benefits of internationalization in a University” such as UPLB.

With the theme “Unifying Force for Global Community,” the event featured song and dance performances of students from the Philippines, Indonesia, Timor Leste, Vietnam, Thailand, Cambodia, Laos, Myanmar, Bangladesh, and Nigeria. read more

In order to modernize pedagogy and equip faculty members with technology-mediated teaching strategies, the Interactive Learning Center (ILC) and Graduate School (GS) co-sponsored the workshop on Graduate Program Innovations: Hands-On Training on Blended Learning for faculty members on July 27-28, at the ILC Computer Laboratory, CAS Annex I Bldg.   

Dr. Jose V. Camacho, Jr., GS dean, lauded the participants for attending the workshop despite the fact that they were on teacher’s leave. He said that since faculty members are in the forefront of the internalization efforts of the University and UPLB-GS has already embarked on off-campus offering, there is a need to conduct training programs on technology-mediated approaches that would help enhance the graduate programs of the University. read more

The UPLB Graduate School (GS) conducted its 2015 Hooding and Recognition Ceremonies on July 3 at the DL Umali Hall, conferring degrees on 48 Ph.D. and 212 masters candidates. It also gave recognition to its top five Ph.D. and masters candidates, and two recipients of special awards.

In his opening remarks, Chancellor Fernando C. Sanchez, Jr. advised the graduate students to actively participate in collaborative research activities that promote knowledge building and policy making, to publish their work, and serve the people. He further explained that as the ASEAN integration promotes mobility among faculty and students, it also presents UPLB an opportunity to pursue research and development policies in the region. read more

The Graduate School welcomes new staff officials to improve and strengthen its graduate services. On 15 November 2017, Dr. Mark Dondi M. Arboleda, former School Secretary since 2015, was officially appointed as Associate Dean; Dr. Aimee Lynn A. Barrion-Dupo as School Secretary; and Ms. Nanette A. Aquino as Assistant Secretary. Read more

Dr. Aimee Lynn Barrion-Dupo, Graduate School Secretary, was one of the 68 awardees of the UP Scientific Productivity System for CY 2017. 

The UP Scientific Productivity System (SPS) aims to support the development of science and technology; and encourage and reward scientific productivity. 

The nominees are evaluated according to the following: Scientific Productivity as measured by scientific publications, significant technological output and discoveries; Scientific Standing; and professional Standing

Visit http://ovpaa.up.edu.ph/up-scientific-productivity-system-2/ for more details on the UP Scientific Productivity System.



Dr. Mark Dondi M. Arboleda takes-over as secretary of UPLB Graduate School effective March 4, 2015.

He succeeds Dr. Willie P. Abasolo who was appointed by the UP Board of Regents as the new dean of the College of Forestry and Natural Resources on March 3, 2015.

Read More


The 43rd Commencement Exercises of UPLB will be held on Saturday, July 4, 2015 at the D.L. Umali Freedom Park in front of the D.L. Umali HAll (UPLB Auditorium).

Click here to download the instructions





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