WPTRC | Horticulture



Western Pacific Tropical Research Center horticulturists are engaged in vegetable and ornamental research agendas as well as native plant protection projects. Experiments and field trials are conducted at the three research stations on island.


Vegetable Trials

Variety trials are carried out to find the vegetable varieties that respond well to the climatic conditions and soils of Guam. Horticulturist Joseph Tuquero has recently conducted trials for hot pepper, lettuce and kale, which help Guam farmers and gardeners know the best varieties to plant. Read about these trials in the 2017 and the 2016 Impact Reports. Click on the links below for fact sheets.

Bell Pepper   Bok Choy    Chinese kale    Hot Pepper    Kale    Lettuce    Zucchini


 UOG Triton Farm

Triton farm students learn about aquaponics 

The Yigo Research & Education Center houses the UOG Triton Farm. Dr. Mari Marutani oversees this integrated model farm with a total area of 4.5 acres. The farm has three components, which include aquaponics (tilapia, basil, and lettuce), horticultural crops (fruits, vegetables, and herbs) and animal production (egg layer hens). 

The goals of the UOG Triton Farm are:

  • to establish an integrated demonstration farm of small agriculture enterprise for the tropics
  • to provide students and the community with training opportunities in a small agriculture enterprise operation
  • to educate students and the community on the concept of the interrelation of agro-environments and human ecology
  • to document the benefits and constraints of the operation of an integrated farm
  • to operate the farm profitably
  • to encourage the adoption of integrated farming technology suited for individual needs


Guam Plant Extinction Prevention Program (GPEPP)

Dr. Jim McConnell has been instrumental in securing grant funding for GPEPP. He and GPEPP staff are commited to protecting the rare plants of Guam through plant surveys, a native plant nursery, seed storage, and a tissue culture lab. To learn more about the role GPEPP is playing in preserving the islands plants read about their efforts in the 2018 and 2016 Impact Reports. Visit the GPEPP website.


Guam Forest Inventory and Analysis (FIA)

Dr. Jim McConnell's lab has been actively building capacity for its own staff and regional foresters through forest inventories and trainings. In partnership with the US Forest Service, Guam and the region benefit through localized research and support. Read about an Alaskan training oppportunity in the 2015 Impact Report.


Jim McConnell, PhD
Agriculture & Life Sciences Building, Room 317 
University of Guam 
UOG Station 
Mangilao, Guam 96923 
Email: mcconnell@triton.uog.edu
Phone: 671-735-2129 
Fax: 671-734-4600

Mari Marutani, PhD
Agriculture & Life Sciences Building, Room 318
College of Natural & Applied Sciences 
University of Guam 
UOG Station 
Mangilao, Guam 96923 
Email: marutanim@triton.uog.edu
Phone: 671-735-2131 
Fax: 671-734-2129

Joseph Tuquero, MS
Agriculture & Life Sciences Building, Room 105
College of Natural & Applied Sciences 
University of Guam 
UOG Station 
Mangilao, Guam 96923 
Email: tuqueroj@triton.uog.edu
Phone: 671-735-2085
Fax: 671-734-6842