Scientist Profile


Roland V. Rallos

Expertise: Agriculture, Organic Farming, Nutrient Management, Soil Science, Irrigation, Evapotranspiration, Field Experimentation, Soil Physics, Precision Agriculture, Fertigation, Agriculture Research, Farming Systems, Crop Management, Climate Change and Agriculture, Soil Science, Agricultural Plant Science, Plant Fertilization, Animal and Human Nutrition, Sustainable Agriculture, Water Resources Management, Soil Fertility, Crop Production, Soil Analysis, Soil and Water Conservation, Fertilizers, Crop Water Management


Senior Science Research Specialist, DOST-Philippine Nuclear Research Institute, Commonwealth Avenue, Diliman, Quezon City, 1101 Philippines


    • Philippine Society of Soil Science and Technology VSU-Graduate Students Organization, Member


    • DOST-Philippine Nuclear Research Institute, Senior Science Research Specialist (Soil Science), 2010 February - Present
    • Department of Agronomy and Soil Science, Visayas State University, Soil Science Instructor, 2005 March - 2009 April
    • Australian Center for Internatinal Agricultural Research (ACIAR), Science Research Assistant, 2009 June - 2010 February
    • Tokyo University of Agriculture and Technology, Visiting Scientist, 2013 October - 2018 March


    • Smart Farming-based Efficient Nutrient Management to Increase Sugarcane Productivity Through Elemental Tracer and Related Techniques [Ongoing], February 2015 - Present
    • IAEA-RAS5073 "Climate Proofing Rice Production Systems (CRiPS) Based on Nuclear Applications, Phase II" [Ongoing], January 2015 – Present
    • Nutrient Dynamics Assessment of Inorganic and Organic Rice-Based Farming Systems in the Pampanga River Basin through Lysimetric and Isotopic Techniques [Ongoing], January 2014 – Present
    • Application of Nuclear Analytical Techniques for Efficient Nutrient and Irrigation Management in Corn Production [Ongoing], January 2013 – Present


    • Visayas State University, Pangasugan, Baybay City, 6521 Leyte, Master of Science in Soil Science, 2008


    • Tulin, A.B., Rallos, R.V., Rañises, M.B., & Dorahy, C., (2013) Increasing Cabbage Production Through NPK Application In Cabintan, Ormoc City, Leyte
    • Annals of Tropical Research Volume 35, No. 1
    • Tulin, A.B., Quiñones, C.M., Rallos, R., Mercado, A., Jr., Salvani, J., Lapoot, C., Justo, V., & Dorahy, C., (2010) Evidence-based nutrient management strategy in identifying fertility status and soil constraints for vegetable production in the Southern Philippines
    • Proceedings of the 19th World Congress of Soil Science, Brisbane, Australia
    • Tulin, A.B., Rallos, R., & Dorahy, C., (2010) Integrated nutrient management for increased cabbage production in volcanic soil in Cabinatan, Leyte, Philippines
    • Proceedings of the 19th World Congress of Soil Science, Brisbane, Australia
    • Rallos, R.V., Asio, V.B., & Villamayor, F.P., (2017) Soil-Landscape Relationship in the Northern Volcanic Mountain of Leyte, Philippines
    • Annals of Tropical Research Volume 39, No. 1
    • Dicen, G.P., Navarrete, I.A., Rallos, R.V., Salmo, S.G., III, & Garcia, M.C.A., (2019) The role of reactive iron in long-term carbon sequestration in mangrove sediments
    • Journal of Soils and Sediments Volume 19, No. 1
    • Kabir, M.H., Sas, P., Islam, M.M., Hossain, M.B., Islam, M.M., Mamun, A.N.K., & Rallos, R.V., (2019) Effect of different doses of nitrogen on nitrogen fixation and yield of lentil using
      tracer technique
    • GSC Biological and Pharmaceutical Sciences Volume 6, No. 3
    • Baldos, A.P., & Rallos, R.V., (2019) Indications of enhanced soil ecosystem functions in polyculture reforested grassland
    • Annals of Tropical Research Volume 41, No. 1
    • Navarrete, I.A., Dicen, G.P., Perez, T.R., Mendoza, S.M., Rallos, R.V., Labides, J.L.R., Rivera, C.T., Hallare, A.V., & Claveria, R.J.R., (2019) Towards integrated management of a shallow tropical lake: assessment of water quality, sediment geochemistry, and phytoplankton diversity in Lake Palakpakin, Philippines
    • Environmental Monitoring and Assessment Volume 191