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The Philippine Agricultural Scientist

Rommel C. Sulabo, Ph.D. 
Editor-in-Chief 
Institute of Animal Science 
College of Agriculture and Food Science 

Barbara L. Caoili, Ph.D. 
Executive Editor 
National Crop Protection Center 
College of Agriculture and Food Science 

Merdelyn C. Lit, Ph.D. 
Technical Editor 
Institute of Plant Breeding 
College of Agriculture and Food Science 

Lourdes B. Columbres, MBA 
Managing Editor 

Anacorita O. Abasolo, M.Sc. 
Production Editor 

Maria Dominique L. Culing 
Language Editor 

Clarissa Q. Belen 
Administrative Support Staff 

Section Editors 

Barbara L. Caoili, Ph.D. 
Executive Editor 
National Crop Protection Center 
College of Agriculture and Food Science 

Merdelyn C. Lit, Ph.D. 
Technical Editor 
Institute of Plant Breeding 
College of Agriculture and Food Science 

Jose E. Hernandez, Ph.D. 
Institute of Crop Science 
College of Agriculture and Food Science, 
University of the Philippines Los Baños 

Pompe C. Sta Cruz, Ph.D. 
Institute of Crop Science 
College of Agriculture and Food Science, 
University of the Philippines Los Baños 

Virginia R. Cardenas, Ph.D. 
Institute of Governance and Rural Development 
College of Public Affairs and Development 
University of the Philippines Los Baños 

Jessamyn R. Adorada, Ph.D. 
Institute of Weed Science, Entomology and Plant Pathology 
College of Agriculture and Food Science 
University of the Philippines Los Baños 

Mudjekeewis D. Santos, Ph.D. 
Academician, 
National Fisheries Research and Development Institute 
Diliman, Quezon City 

Kevin F. Yaptengco, Ph.D. 
Department of Agricultural Bio Processing 
College of Engineering and Agro-Industrial Technology, 
University of the Philippines Los Baños 

Filomena C. Sta cruz, Ph.D. 
Institute of Weed Science, Entomology and Plant Pathology 
College of Agriculture and Food Science 
University of the Philippines Los Baños 

Elda B. Esguerra, Ph.D. 
Postharvest Horticulture Training and Research Center 
College of Agriculture and Food Science 
University of the Philippines Los Baños 

Floirendo P. Flores, Ph.D. 
Institute of Food Science and Technology 
College of Agriculture and Food Science 
University of the Philippines Los Baños 

Consuelo Amor S. Estrella, Ph.D. 
Institute of Animal Science 
College of Agriculture and Food Science 
University of the Philippines Los Baños 

Analiza Henedina M. Ramirez, Ph.D. 
Institute of Weed Science, Entomology and Plant Pathology 
College of Agriculture and Food Science 
University of the Philippines Los Baños 

Honorary Advisory Board 

Clare R. Baltazar, Ph.D. 
Academician, National Academy of Science and Technology 
Philippine Department of Science and Technology 

Evelyn Mae Tecson-Mendoza, Ph.D. 
Academician, National Academy of Science and Technology 
Philippine Department of Science and Technology 

Ricardo M. Lantican, Ph.D. 
Academician, National Scientists 
Alumni of the College of Agriculture 
University of the Philippines Los Baños 

Rafael D. Guerrero, Ph.D. 
Academician, National Academy of Science and Technology 
Philippines Department of Science and Technology (DOST) 
Bicutan, Taguig City, Metro Manila, 
Philippines; e-mail: secretariat@nast.ph 

Arnel N. Del Barrio, Ph.D. 
Academician, National Academy of Science and Technology 
University of the Philippines Los Baños 

Editorial Consultative Board 

Jose Ramon Botella, Ph.D. 
School of Biological Sciences, 
University of Queensland Brisbane, 
Queensland, Australia 

Ian Coxhead, Ph.D. 
Department of Agricultural and Applied Economics 
University of Wisconsin 
Madison, Wisconsin, U. S. A. 

Fabian M. Dayrit, Ph.D. 
College of Science, 
Ateneo de Manila University 
Quezon City, Philippines 

Salcedo L. Eduardo, Ph.D. 
College of Veterinary Medicine 
University of the Philippines Los Baños 

Jane Haggis, Ph.D. 
Center for Development Studies, 
Flinders University Adelaide, South Australia 

Ernesto J. Del Rosario, Ph.D. (Professor Emeritus) 
Institute of Chemistry 
University of the Philippines Los Baños