Sex: Male

Education:

• University of the Philippines Los Baños (UPLB), College, Laguna, Bachelor Science in Entomology, 1958
• University of Hawaii (UH), East-West Center scholar, Hawaii, USA, Master Science in Agronomy, 1963
• University of Hawaii, Hawaii, USA, Doctor of Philosophy in Soil Science (specialization in weed science and herbicide degradation in soils), 1970

Field of Specialization:

Rice Research and Development, Rice Technology , Agriculture, Agronomy, Soil Science

Researches:

Corpuz, A.A. Rebuelta, P.I. Lara, R.J. Cruz, R.T. Obien, S.R., (1995) Management practices to maximize yield of irrigated transplanted rice.
Philippine Rice R & D Research Highlights

Marcos, T.F. Obien, S.R. Zeigler, R.S. Ladha, J.K., (1995) Rainfed lowland and rice research consortium.
Philippine Rice R&D Research Highlights

Agustin, E.O. Lucas, M.P. Ortal, C.I. Obien, S.R. Balasubramanian, V. Morales, A. Ladha, J.K., (1995) On-farm trial on comparison of prilled urea-N and urea-N tablet application in Farmer's Fields in Batac, Ilocos Norte.
Philippine Rice R&D Research Highlights

Pascua, S.R. Valencia, D.A. Obien, S.R. Ladha, J.K., (1995) Assessment of the sustainability of cropping sequences with special reference to nutrient utilization
Philippine Rice R &D Highlights

Agustin, E.O. Ortal, C.I. Pascua, S.R. Obien, S.R. Ladha, J.K., (1995) Integration of indigofera tinctoria in different rainfed lowland rice-based cropping schemes in the Ilocos
Philippine Rice R&D Research Highlights

Sanchez, L.M. Obien, S.R., (1995) Profile of rice pest problems and farmer's cultural practices in Mindanao (Phase II)
Philippine Rice R&D Research Highlights

Obien, S.R. et al., (1995) IPM collaborative research support program (IPM CRSP): IPM in rice-vegetable systems
Philippine Rice R&D Research Highlights

Medrano, F.G., Geronimo, D.C., Heong. K.L., Sagun, V.G., Rosario, J.S., Obien, S.R., Bottrell, D.G., (1995) Barangay IPM: An insecticide reduction strategy
Philippine Rice R&D Research Highlights

Casimero, M.C. Corales, R.G. Retales, R.O. Obien, S.R., (1995) Field evaluation of promising soybean lines after rice.
Philippine Rice R&D Research Highlights

Casimero, M.C. Obien, S.R., (1995) Field evaluation of Ritz harvest on the growth and yield of lowland transplanted rice.
Philippine Rice R&D Research Highlights

Obcemea, W.N. Garcia, F.D. Javier, E.F. Casimero, M.C. Obien, S.R. Dumaoal, I.D. Pascual, F. Aragon, M.L., (1995) Establishment methods for rainfed rice in rice-bsed cropping systems.
Philippine Rice R&D Research Highlights

Gapud, V.P. Obien, S.R. Norton, G.W. Rajotte, E., (1999) Integrated pest management collaborative research support program (IPM CRSP)
PhilRice Technical Bulletin Volume 4

Obien, S.R. et al., (1999) Exploratory Land use options for Ilocos Norte
PhilRice Technical Bulletin Volume 4

Obien, S.R. Takahashi, H. Bautista, E.U., (1999) Accomplishments of the JICA project-type technical cooperation for PhilRice (1992-1997)
PhilRice Technical Bulletin Volume 4

Baltazar, A.M., Martin, E.C., Casimero, M.C., Bariuan, F.V., Obien, S.R., DeDatta, S.K., (2000) Reducing herbicide use with agronomic practices in onion grown after rice
Philippine Agriculturist Volume 83

Casimero, MC, Baltazar, AM, Manuel, JS, Obien, SR, and DeDatta, SK, (1999 N 22-27) Morphologic and Genetic variations in upland and lowland ecotypes of purple nutsedge (Cyperus rotundus L.) Rainfed rice-onion systems
In: Abstracts of the 17th Asian Pacific Weed Science Society Conference, Bangkok, Thailand.

Baltazar, A.M., Alberto, R.T., Padua, L.E., Lit, M.C., Opina, N.L., Arida, G.S., Gergon, E.B., Caimero, M.C., Francisco, SR, Tanzo, IR, Miller, SA, Norton, GW Rajotte, EG, DeDatta, SK, Sebastian, LS, Gapud, VP, Obien, S.R., (2001) IPM in rice-vegetable systems: Research highlights and promising technoliges
PhilRiceTechnical Bulletin Volume 6, No. 2

Baltazar, AM, Martin, EC, Casimero, MC, Bariuan, FV, Obien, SR, and DeDatta, SK, (1999 N 22-27) Weed management strategies in onion growth after rice
In: Abstracts of the 17th Asian Pacific Weed Science Society Conference, Bangkok, Thailand

Redona, ED, Virmani, SS, Malabanan, FM, Toledo, RS, Javier, LJ, Casal, CL, Rebuelta, PI, Barroga, RF, and Obien, SR, (1998) Hybrid rice technology in the Philippines: From laboratory to farmers' fields
The Philippine Journal of Crop Science Volume 23, No. 1

Obien, S.R., Sebastian, L.S., (1998) Biotechnology Research for Rice Improvement in the Philippines
The Philippine Journal of Crop Science Volume 23, No. 1

Baltazar, AM, Martin, EC, Casimero, MC, Bariuan, FB, SR Obien, SR and De Datta, SK, (1998) Major weeds in rainfed-rice onion cropping systems in the Asian Site in the Philippines
IPM-CRSP Working Paper No. 98-1, Virginia Tech, Blacksburg, VA, USA

Obien, S. R. and Green, RE, (1970) Herbicides equilibrium in soils in relation to soil water content
Weed Science Volume 17

Obien, S.R., Vega, M.R., (1968) Weeds and their Control
The Rice Production Manual, Chapter II, Rice Information Cooperative Effort (R.I.C.E.) University of the Philippines College of Agriculture and the International Rice Research Institute, Laguna, Philippines

Obien, S. R., Plucknett, DL and LC Burrill, LC, (1971) Chloramben and five newer herbicides for weed control in transplanted rice
In: Proc. British Weed Conference Volume 10

Obien, S. R., Green, RE, (1970) Degradation of atrazine in four Hawaiian soils
Weed Science (See also Abstracts of the 1968 WSSA Meeting, p. 73) Volume 17

Obien, S. R. , (1972) Introduction to weed science, Classification of weeds and major weed problems, Selectivity of herbicides, Methods of calibration and application and control of specific weeds
Weed Control in the South Pacific, SPC Handbook South Commission, Noumea, New Caledonia (Ed. Michael Lambert) Volume 10

Baltazar, A.M., Obien, S.R., Casimero, M.C., (1995 Je 19-23) Weed management in rice in the Philippines: Status and Research Agenda
Weed Management in Rice Production, International Rice Research Institute, Los Banos, Laguna

Obien, S.R., Baltazar, A.M., (1995) Weed control in sugarcane in the Philippines
Weed Control in Tropical Crops, Weed Science Society of the Philippines, College, Laguna, Philippines (K. Moody, Ed.)

Obien, S. R., Plucknett, DL and Dela Pena, RS, (1973) A herbicide screening technique in flooded paddy fields
Phil. Weed Science Bulletin Volume 2

Obien, S. R., Plucknett, DL, Dela Pena, RS and RG Escalada, RG, (1973) Chemical weed control in ratoon cropping system for sorghum in Hawaii
In: Proceedings Asian-Pacific Weed Science Society Conference, Tokyo, Japan

Pancho, JV and Obien, SR , (1992) Manual of Ricefield Weeds in the Philippines
Manual

Obien, S.R., (1992) Confessions of a Research Manager
Research Management Components Volume 5, No. 1-2

Obien, S.R., Pablico, S.M.A., (1991) Mobilizing the State Colleges and Universities for technology transfer
Philippine Journal of Crop Science Volume 12, No. 1

Obien, S.R., Briones, A.M., (1987) Crop Value Index for Tobacco
Journal of Tobacco Science and Technology Volume 1, No. 1

Obien, S.R., Briones, A.M., Arocena, J.M., Abella, L.A., (1986) Development of a soil testing program for tobacco production II: Calibration of soil test values with crop response
Journal of Tobacco Science and Technology Volume 1, No. 1

Obien, S.R., Duldulao, V.A., Lemana, J.F., (1984) Farmer-back-to-farmer: The Philippine Tobacco Research and Training Center (PTRTC) approach to agricultural development
Journal of Tobacco Science and Technology Volume 1, No. 3

Obien, S. R., Lemana JL, and Rimando, TJ, (1983) Morphological development of the lateral bud of tobacco and its control by chemicals
Journal of Tobacco Science and Technology Volume 1(1)

Pancho, JV and Obien, SR, (1983) Weeds in tobacco farms in the Philippines

Obien, Santiago R. and Calora, FB, (1975) AC 92,553 Applied alone and in combination with 2,4-D or MCPA compared with Recommended Herbicides for Weed Control in transplanted rice
Philippine Weed Science Bulletin Volume 3

Obien, S.R., Shetty, S.V.R., Krantz, B.A., (1977) Weed research need of the small farmers
Proceedings of the Weed Science Conference and Workshop in India Volume 1

Nagju, DL and Plucknett, DL, (1976) Some factors affecting herbicide selectivity in upland rice
Weed Science Volume 24

Obien, SR and Baltazar, AM, (1979) Weed control in Ssgarcane in the Philippines
In: Weed Control in Tropical Crops, Weed Science Society of the Philippines, College, Laguna

Floresca ET, Calora, FB and Obien, SR, (1979) Performance of pendimethalin under different water management levels in transplanted rice (Oryza sativa L.)
Philippine Journal of Weed Science Volume 6

Obien, S.R., Younge, O.R., Suehisa, R.H., (1966) The Effects of Soil Factors on the Phytotoxicity of Neburon to Oats
Weeds Volume 14

Obien, S. R. and Vega, MR, (1965) Weed control in corn: Preliminary field screening of newer herbicides
In: Proceedings of the Second Inter-Asian Corn Improvement Workshop, College of Agriculture, University of the Philippines

Obien, S. R. and Vega, MR, (1965 D 13-18) Weed control in corn: Studies on competition
In: Proceedings of the Second Inter-Asian Corn Improvement Workshop, College of Agriculture, University of the Philippines

Obien, S. R. and Vega, MR, (1965) The influence of droplet size of the effect of 2,4-dichlorophenoxyacetic acid (2,4-D) on rice and weeds
The Philippine Agriculturist Volume 47

Obien, S.R., Vega, M.R., (1964 O 26-30) Chemical Weed Control in Corn
First Inter-Asian Corn Improvement Workshop, Bangkok, Thailand

Obien, S.R., (1964) Herbicides can control weeds at low cost
UP College of Agriculture Monthly Bulletin Volume 5, No. 7

Obien, S. R., Velasco, JR, Vega, MR and Llena, LA, (1961) Studies on chemical weed control in upland rice
The Philippine Agriculturist Volume 44

Obien, S. R. and Vega, MR, (1960) Some studies on Neburon
The Philippine Agriculturist Volume 45

Obien, S. R. and Vega, MR, (1960) The response of some lowland varieties to 2,4-dichlorophenoxyacetic (2,4-D)
The Philippine Agriculturist Volume 44

Papers Presented:

• Hybrid rice and biotechnology research and development, Jiangxi Academy of Agricultural Sciences
• Biotechnology Research for Rice Improvement in the Philippines, International Program on Rice Biotechnology of the Rockefeller Foundation, Malacca, Malaysia
• Achievements and Issues in Rice Production in the Philippines, 19th Session of the International Rice Commission, Cairo, Egypt
• Major Weeds and their Management in Rainfed-Rice Onion Cropping Systems in the Philippines , Progress in IPM-CRSP Research: Proceedings of the Third IPM-CRSP Symposium, Virginia Tech, Blacksburg, Virginia, USA
• Characterization of Purple Nutsedge in Rainfed-rice Onion Systems, 16th Asian-Pacific Weed Science Society conference, Kuala Lumpur, Malaysia
• Weed Management in Rice-onion Systems, Progress in IPM-CRSP Research: Proceedings of the Second IPM-CRSP Symposium, Guatemala City, Guatemala
• A Brief Review of Philippine Agriculture and Research Activities of the Philippine Rice Research Institute, Faculty of Agriculture, Okayama University, Japan
• Weed Management in Rice in the Philippines: Status and Research Agenda, In: Weed Management in Rice Production , Workshop of the Rice IPM Network, Penang, Malaysia, International Rice Research Institute, Los Banos, Laguna
• Rice Based Cropping Systems for Sustainable High Yields in the Philippines, 2nd Asian Crop Science Association Conference (ACSA) Fukui, Japan
• Yield Response of Virginia Tobacco from Fertilization of Alluvial Soils in Northwestern Luzon, Annual Conference of the Crop Science Society of the Philippines
• Tobacco Production in the Philippines: Status and Problem , 14th Conference of the Pest Control Council of the Philippines, Regent of Manila, Manila
• Status of Herbicide Utilization and its Economical Assessment in the Philippines, In: Symposium on Pesticide Use in the Developing Countries: Present and Future , Kyoto International Conference Hall, Kyoto, Japan
• New Herbicides for Weed Control in Direct Sown and Transplanted Rice , Asian-Pacific Weed Science Society Conference, Roturoa, New Zealand
• Chemical Control of Guinea Grass (Panicum maximum), Napier grass (Pennisetum purpureaum) and wildsugarcane (Saccharum spontaneum) in Hawaii , Asian-Pacific Weed Science Society Conference Roturoa, New Zealand
• Control of Paragrass (Brachiarria mutica) with Glyphosate and Other Herbicides, Asian-Pacific Weed Science Society Conference, Roturoa, New Zealand
• Proceedings of the Workshop on Pest Management Curriculum Development and Training Needs, East-West Center Food Institute, Honolulu, Hawaii (Eds. Obien, SR and PS Motooka)
• The Use of 2,4-D Impregnated Urea Fertilizer Granules and Related Phenoxy Herbicides for Pre-emergence Weed Control in Transplanted Rice , Asian-Pacific Weed Science Society Conference, Kuala Lumpur, Malaysia
• Weed control in Direct Sown Rice: Studies with Benthiocarb, RP 17623 and MBR 76343 , Asian-Pacific Weed Science Society Conference, Kuala Lumpur, Malaysia
• Transport of Atrazine in a Latosolic soil in Relation to Adsorption, Degradation, and Soil Water Variables, Transactions, 9th International Soil Science Congress
• Weed Control In Corn: Studies on Competition, 2nd Inter-Asian Corn Improvement Workshop, College of Agriculture, University of the Philippines

Awards:

• Presidential Lingkod Bayan (Public Service) Award for Outstanding Work Performance, Civil Service Commission, 1999
• DA-Khush Award, Federation of Crop Science Societies of the Philippines, 1998
• Pantas Award, PCARRD, 1993
• Outstanding Public Servant, Senator Ernesto Maceda, 1994
• College Scholar (BS Agriculture), University of the Philippines Los Baños, 1963
• East-West Center scholar for MS degree, University of Hawaii, 1970
• PhilARM Research Leadership Excellence Award, Philippine Association of Research Managers, 2007 March
• Outstanding University of the Philippines Los BañosAlumnus Award, UPLBAA, 2004 October
• Dioscoro L. Umali Medal (Outstanding Science Administrator Award), National Science and Technology Week (DOST), 2000
• Distinguished EWC Alumni Award, East West Center Association, 2000 July
• Outstanding Accounting Office - Government Owned and Controlled Corporation (GOCC) Category, Association of Government Accountants of the Philippines, 1996
• Certificate of Recognition, East West Center (Philippines) Alumni Association, 1998
• DA-Khush Award, Federation of Crop Science Societies of the Philippines (FCSSP), 1998
• Danganan (sword) Award, Mindanao State University, 1997
• Bai Matabay Plang (Muslim leader) Award , University of Southern Mindanao, 1997
• PhilJafa Award, Philippine Japan Fellows Association, 1997
• Diego Silang (hero) Award, Provincial Government of La Union, Philippines, 1996
• Productivity Excellence Award, Excellence in Productivity R&D, Asian Productivity Organization of the Philippines, 1992
• Tawid (heritage) Award for Education , Tawid Award Foundation, 1988
• Oblation Award, University of the Philippines Vanguard, Inc., 1985
• Ragpat (accomplishment) Award in Agriculture , Ilocandia Jaycees Senate , 1985
• Achievement Award in the Field of Agricultural Development, University of the Philippines Vanguard, Inc., 1984
• Pest Management Award, Pest Management Council of the Philippines, 1984
• Crystal Anniversary Award, East-West Center/Univ. of Hawaii Alumni Association, 1983
• Award of Distinction in Public Administration, Class 1958, University of the Philippines Los Baños College of Agriculture, 1983
• Outstanding Alumnus Award in Research Administration, UPLB College of Agriculture Alumni Association, 1983
• Honorary Fellows Award, Crop Science Society of the Philippines, 1982
• Outstanding Citizen of Batac - Science Category, Annak (children) ti Batac Jaycees, Inc., 1980
• Marcos R. Vega Award in Weed Science, Weed Science Society of the Philippines, Inc., 1978
• Graduate Research Assistantship Grant (PhD degree in Soil Science), University of Hawaii, 1965-1969
• East-West Center Scholarship Grant for MS in Agronomy, Univ. of Hawaii, 1961-1963
• Gawad (award) Oscar M. Florendo for Outstanding Public Information Program, Public Relations Organization of the Philippines, 1998 & 1996
• Best Paper Award, Annual Conference of the Crop Science Society of the Philippines, 1986 May 2-4
• Plaque of Appreciation, Weed Science Society of the Philippines, 1978
• Outstanding Media Award for PhilRice - Alberto Rous Award, Department of Science and Technology (DOST), 1996
• Outstanding Institution for Basic and Applied Research for PhilRice, DA-Bureau of Agricultural Research, 1994 & 1996
• Tanglaw (light) Award for PhilRice , PCARRD, 1993
• Achievement Award in Pest Management for PhilRice (Institution category), Pest Management Council of the Philippines, 1992
• Philippine Atmospheric, Geophysical and Astronomical Service Administration Award, Civil Service Commission, 1992
• Tanglaw Award for PTRTC, Philippine Council for Agriculture, Forestry and Natural Resources Research and Development, 1984
• Outstanding Institution Award for PTRTC, National Academy Science and Technology & Philippine Council for Agriculture, Forestry and Natural Resources Research and Development, 1983