University of Hawai‘i at Manoa
Skip Breadcrumb

Last updated on Saturday, April 2, 2011     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 :


Hawaii Crops Extension Project
Waimea Diamondback Moth Management
Blueberry and Tea Research & Extension in Waimea
Statewide Cooperative Extension Outreach Program for Fruit Fly Pest Management
Ohelo berry: a specialty ornamental and value added crop of Hawaii
Sustainable Cropping Systems for Tropical Root Crops


Professional Interests :


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

Selected Publications :


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.

 

Hamasaki, Randall, T., Robin Shimabuku, and Stuart T. Nakamoto. January 2008. Guide to Insect and Mite Pests of Tea (Camellia sinensis) in Hawaii. University of Hawaii at Manoa, College of Tropical Agriculture and Human Resources. IP-28. 15 pp.

 

Deenik, J., R. Hamasaki, R. Shimabuku, S. Nakamoto, and R. Uchida. 2007. Phosphorus Fertilizer Management for Romaine Lettuce Grown in Fertile Volcanic Ash Soils of Hawaii. Cooperative Extension Service, College of Tropical Agriculture and Human Resources. SCM-19. 3 pp.

 

Deenik, J., R. Hamasaki, R. Shimabuku, S. Nakamoto, and R. Uchida. 2006. Phosphorus Fertilizer Management for Head Cabbage. Cooperative Extension Service, College of Tropical Agriculture and Human Resources. SCM-16. 6 pp.

 

Zee, Francis, Kim Hummer, Wayne Nishijima, Russell Kai, Amy Strauss, Milton Yamasaki, and Randall T. Hamasaki. 2006. Preliminary Yields of Southern Highbush Blueberry in Waimea, Hawai’i. Cooperative Extension Service. College of Tropical Agriculture and Human Resources. F&N-12. 8 pp.

 

Borth, W.B., Fukuda, S.K., Hamasaki, R.T., Hu, J.S. and Almeida R.P.P. 2006. Detection, characterisation and transmission by Macrosteles leafhoppers of watercress yellows phytoplasma in Hawaii. Annals of Applied Biology 149: 357-363.

 

Silva, J.A., R. Hamasaki, R. Paull, R. Ogoshi, D. P. Bartholomew, S. Fukuda, N.V. Hue, G. Uehara, and G. Tsuji. 2006. Effects of Lime, Gypsum, and Basaltic Dust on the Calcium Nutrition and Fruit Quality of Pineapple. Acta Horticulturae 702: 123-131.

 

Fukuda, S., W. Borth, R. Almeida, R. Hamasaki, J. McHugh, R. Heu, B. Kumashiro, M. Kawate, D. Ogata and J. Sugano. 2004. How to Recognize Symptoms of Aster Yellows in Watercress. Cooperative Extension Service, College of Tropical Agriculture and Human Resources. IP-020.

 

Borth, W.B., Almeida, R.P.P., Fukuda, S.K., Hamasaki, R.T. and Hu, J.S. 2004. Phytoplasma disease of watercress in Hawaii. Phytopathology 94 (Supplement): S9.

Zee, Francis, Dwight Sato, Lisa Keith, Peter Follett, and Randall T. Hamasaki.  2003. Small-scale Tea Growing and Processing in Hawaii. NPH-9. Cooperative Extension Service, College of Tropical Agriculture and Human Resources. 16 pp.

 

Miyasaka, Susan C., Randall T. Hamasaki, and Ramon S. de la Pena. July 2002. Nutrient Deficiencies and Excesses in Taro. Soil and Crop Management. SCM-4.Cooperative Extension Service. College of Tropical Agriculture and Human Resources. 14 pp.

 

Borth, W.B., R. T. Hamasaki, D. Ogata, S. K. Fukuda, and J. S. Hu. 2002. First Report of Phytoplasmas Infecting Watercress in Hawaii. Plant Disease 86(3): 331.

 

Nishina, Melvin, Francis Zee, Richard Ebesu, Alton Arakaki, Randall Hamasaki, Steven Fukuda, Norman Nagata, Chian Leng Chia, Wayne Nishijima, Ronald Mau, and Raymond Uchida. 2000. Papaya Production in Hawaii. F &N-3. Cooperative Extension Service. College of Tropical Agriculture and Human Resources. 8 pp.

 

Sipes, Brent S., Alton S. Arakaki, Donald P. Schmitt, and Randall T. Hamasaki.  1999.  Root-Knot Nematode Management in Tropical Cropping Systems with Organic Products.  Journal of Sustainable Agriculture 15: 69-76.

 

Hamasaki, Randall T., Hector R. Valenzuela, and Robin S. Shimabuku. 1999. Bulb Onion Production In Hawaii. College of Tropical Agriculture and Human Resources. 52 pp.

 

Hue, N.V., J.A. Silva, G. Uehara, R. Hamasaki, R. Uchida, and P. Bunn.  1998.  Manganese Toxicity in Acid Soils in Hawaii.  1998 Annual Meeting of the American Society of Agronomy, Crop Science Society of America, and the Soil Science Society of America.  October 18-22, 1998.  Baltimore, Maryland.