University of Hawai‘i at Manoa
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Last updated on Monday, January 1, 2018     Make updates ->

Randall T  Hamasaki

Name :

Randall T Hamasaki

Title :

Co Extn Agent

Unit :

Department of Plant & Environmental Protection Sciences

Office :

Kamuela Extension Office

Address :

67-5189 Kamamalu Rd
                    Kamuela, HI 96743

Phone :

(808)887-6183

Fax :

(808)887-6182

E-mail :

rth@hawaii.edu

Website :

http://www.ctahr.hawaii.edu/peps

Specialties :

Vegetables, Tea, and Blueberries


Professional Prep/Appointments :


M.S. Entomology, University of Hawaii.  B.S. Agriculture, University of Hawaii.

Projects :


Commercial Edible Crops Extension
Hawaii Island Diamondback Moth Management
Tea Research & Extension in Waimea
Integrated Management Systems for Tropical Root Crops
Statewide Cooperative Extension Outreach Program for Fruit Fly Pest Management


Professional Interests :


Extension education and applied research for vegetables, herbs, blueberry and tea.

Selected Publications :


Olmedo-Velarde, A., R.T. Hamasaki, B. Bushe, and M.J. Melzer. 2017. Tomato Chlorotic Dwarf Viroid. PD-113. College of Tropical Agriculture and Human Resources, University of Hawaii at Manoa.

Green, K.J., M. Chikh-Ali, R.T. Hamasaki, M.J. Melzer, and A.V. Karasev. 2017. Potato virus Y (PVY) isolates from Physalis peruviana are unable to systemically infect potato or pepper and form a distinct new lineage within the PVYc strain group. Phytopathology 107 (11): 1433-1439.

Hamasaki, Randall T., Andrea M. Kawabata and Stuart T. Nakamoto. 2017. Insect and Mite Pests of Blueberries in Hawaii. IP-42. College of Tropical Agriculture and Human Resources, University of Hawaii at Manoa.

Miyasaka, Susan C., Randall T. Hamasaki, and Russell T. Nagata. 2017. Reflective Guide to Growing Olives for Oil Production in Hawai‘i. NPH-16. College of Tropical Agriculture and Human Resources, University of Hawaii at Manoa.

Motomura, Sharon, Alyssa Cho, Randall Hamasaki, Kiersten Akahoshi, Andrea Kawabata, Andrew Kawabata, and Stuart Nakamoto. 2016. Evaluation of pot size for greenhouse production of ‘Misty’ Southern highbush blueberry in Volcano, Hawaii. F_N-48. College of Tropical Agriculture and Human Resources, University of Hawaii at Manoa.

Hamasaki, Randall T., Takahiro Ino and Stuart T. Nakamoto. 2016. Green Tea Quality Evaluation: Identifying Common Defects. FST-65. College of Tropical Agriculture and Human Resources. University of Hawaii at Manoa.

Miyasaka, Susan C. and Randall T. Hamasaki. 2016. Promising Olive Cultivars for Oil Production in Hawaii. HortTechnology 26(4): 497-506. 

Hamasaki, Randall T. and Stuart T. Nakamoto. 2016. ‘Mealani’, A New Variety of Tea for Hawaii. NPH-15. College of Tropical Agriculture and Human Resources. University of Hawaii at Manoa.

Thorne, Mark S. and Randall T. Hamasaki. 2016. Management of Caterpillar Pests in Hawaii Pastures. 2016. PRM-12. College of Tropical Agriculture and Human Resources. University of Hawaii at Manoa.

Hamasaki, R.T., S.A. Motomura, and S.T. Nakamoto. 2015. Hawaii Tea Growers’ Survey 2014. NPH-14. College of Tropical Agriculture and Human Resources. University of Hawaii at Manoa.

Hamasaki, R.T., S.A. Motomura, M.J. Melzer and B.C. Bushe. 2015. Potato Virus Y: A Pathogen Associated With an Emerging Disease of Poha in Hawaii. PD-109. College of Tropical Agriculture and Human Resources. University of Hawaii at Manoa.

Hamasaki, Randall, T., Sharon A. Motomura, Andrea M. Kawabata, Andrew F. Kawabata, Kiersten Akahoshi, and Stuart T. Nakamoto. 2015. Growing Blueberries for Home Production in Hawaii. Fruit, Nut, and Beverage Crops. F_N-46. College of Tropical Agriculture and Human Resources. University of Hawaii at Manoa.

Pant, Archana, Theodore J.K. Radovich, Koon-Hui Wang, N.V. Hue, Marla Fergerstrom, Randall Hamasaki, Matthew Wung, and Chris Robb. 2014. Performance and Plant-Available Nitrogen (PAN) Contribution of Cover Crops in High Elevations in Hawaii. Sustainable Agriculture SA-15, UHM College of Tropical Agriculture and Human Resources.

Nakamoto, Stuart, Jie Gonsowski, Randall Hamasaki, Elyse Petersen, and Aurencio Seguritan. 2011. Hawaii-Grown Tea: A Market Feasibility Study. Honolulu, HI: University of Hawaii, College of Tropical Agriculture and Human Resources (CTAHR) and Pacific Asian Center for Entrepreneurship and E-Business (PACE), Shidler College of Business.

Kawabata, Andrew F., Jonathan L. Deenik, Randall T. Hamasaki, Joanne Lichty, and Stuart T. Nakamoto. 2011. Acidification of Volcanic Ash Soils From Maui and Hawaii Island for Blueberry and Tea Production. Soil and Crop Management. AS-5.

Follett, Peter A., Francis T. Zee, Randall T. Hamasaki, Kim Hummer, and Stuart T. Nakamoto. 2011. Susceptibility of Low-Chill Blueberry Cultivars to Mediterranean Fruit Fly, Oriental Fruit Fly, and Melon Fly (Diptera: Tephritidae). J. Econ. Entomol. 104(2): 566-570.

Zee, Francis, Randall T. Hamasaki, Stuart T. Nakamoto, Lisa Keith, Kim Hummer, Barbara Reed, and Andrew Kawabata. 2010. Producing Potted Ornamental Ohelo. OF-50.

Keith, L., L. Sugiyama, A. Strauss, R. Kai, F. Zee, R. Hamasaki, M. Yamasaki, and S Nakamoto. 2008. First Report of Leaf Rust of Blueberry Caused by Pucciniastrum vaccinii in Hawaii. Plant Disease 92 (11): 1590.

Yamasaki, Milton, Randall Hamasaki, Dwight Sato, and Stuart Nakamoto. March 2008. In-ground Procedure for Rooting Tea Cuttings, University of Hawaii at Manoa, College of Tropical Agriculture and Human Resources. SCM-23, 4 pp.