Dr. Ruben Gapasin is recognized of his researches in plant pathology particularly on the biological control of nematodes and soil-borne pathogens in root crops. Dr. Gapasin’s studies finds significance in the control of nematodes considered one of the major factors contributing to the occurrence of crop disease, low yield and poor quality of farm produce.
Sex: Male
Education:
- Notre Dame University, Cotabato City, Philippines, Bachelor of Arts in Philosophy (108 units), 1968-1971
- University of Southern Mindanao,,, Kabacan, Cotabato, Philippines, Bachelor of Science in Agriculture major in Ag. Economics, 1971-1974
- University of the Philippines at Los Baños,, College, Laguna, Philippines, Medical Science in Plant Pathology (phytonematology) under the ViSCA Fellowship Grant, 1974-1978
- North Carolina State University (NCSU), Raleigh, North Carolina, U.S.A., Doctor Philosophy in Plant Pathology, 1980
- Unversity of the Philippines at Los Baños, College, Laguna, Philippines, Doctor Philosophy in Plant Pathology (Phytonematology), 1981-1984
Field of Specialization:
Plant Pathology, Nematology, Soil Borne Pathogen, Agriculture
Researches:
Gapasin, R.M., (1978) Survey and identification of plant parasitic nematodes associated with sweet potato and cassava in Leyte, Philippines.
Annals of Tropical Research Volume 1
Gapasin, R.m. Valdez, R.B., (1979) Pathogenecity of Meloidogyne spp. and Rotylenchulus reniformis on sweet potato.
Ab nals of Tropical Research Volume 1, No. 1
Gapasin, R.M. Valdez, R.B., (D 1979) Survey and identification of plant parasitic nematodes associeted with sweet potato and cassava.
Annals of Tropical Research Volume 1, No. 2
Gapasin, R.M., (Ja-Mr 1980) Reaction of golden yellow cassava to Meloidogyne spp. inoculation.
Annals of Tropical Research Volume 2, No. 1
Gapasin, R.M., (Ap-Je 1981) Control of Meloidogyne incognita and Rotylenchulus reniformis and its effect on the yield of sweet potato.
Annals of Tropical Research Volume 3, No. 2
Lopez, E.A. Gapasin, R.M. Palomar, M.K., (1981) Effect of different levels of Helicotylenchus nematode infestation on the growth and yield of sweet potato.
Annals of Tropical Research Volume 3, No. 4
Gapasin, R.M. Suico, L., (1984) Occurence of chlorotic spotting disease on some VISCA sweetpotato hybrids.
Annals of Tropical Research Volume 6
Nayga, J.G. Gapasin, R.M., () Resistance of fifty-two sweetpotato (Ipomoea batatas L. LAM.) cultivar to meloidigyne incognita.
Annals of Tropical Research Volume 8, No. 3
Nayga, J.G. Gapasin, R.M., (Jl-D 1986) Effect of stem and foliage scab disease on the growth and yield of VSP-1 sweet potato variety.
Annals of Tropical Research Volume 8, No. 3
Napiere, C.M. Palomar, M.K. Gapasin, R.M., (1987) Distribution and control of bacterial diseases of solanaceous crops.
Terminar Report ( Funded by PCARRD)
Salares, F.G. Gapasin, R.L., (1987) Influence of inoculum density of root -knot nematode (meloidogyne incognita) and plant age on yield of amplaya (Momordica charantia L.)
Proceedings of the Federation of Crop Science Society of the Philippines. (Abstract)
Bajit, J.B. Gapasin, R.M., (Ap-Je 1987) Relationship between morphological characteristics and varietal resistance of sweetpotato to scab infection caused by Sphaceloma batatas Saw.
Annals fo Tropical Research Volume 92, No. 2
Gapasin, R.M., (1987) Studies on the major diseases and insect pests of sweetpotato at VISCA, Phlippines.
Sweet Potato Research and Development for Small Farmers. K.T. McKay, M.K. Palomar and R.L.T. Sanico
Gapasin, R.M. Valdez, R.B. Mendoza, E.M,T,, (1988) Phenolics involvement in sweetpotato resistance to meloidogyne incognita and M. javanica.
Annals of Tropical Rsearch Volume 10, No. (2):
Bastasa, G.N. Gapasin, R.M., (1988) Reaction of ten cor culivars/lines to five isolates of Erwina caratovora var. chrysanthemi causing stalk rot.
Proceedings of the Pest Control Council of the Philippines
Gapasin, R.M. Sajise, C.E. Buyser, M.A., (1992) Yield of taro (Colocasia esculenta L. Schott) as affected by taro feathery mosaic virus inoculated at various growth stages.
Philippine Phytopathology Volume 28
Vega, J.J. Talatal-Sanico, R.L. Gapasin, R.M., (1993) Effect of herbicides on the pathogenicity of root-knot nematodes (Meloidogyne incognita) on soybean (Glycine max (L.) Merr). and Amaranthus spinosus L.
Philippine Phytopathology Volume 29
Gapasin, R.M., (1994) Hispathology of resistant and susceptible sweetpotato cultivars infected with root-knot nematode.
Philippine Phytopathology Volume 29
Palomar, M.K. Gapasin, R.M. Vega-Colis, S.I., (1995) Distribution, infection and symptomatology of virus infection-like disease of cucurbits in the Visayas.
Annals of Tropical Research Volume 17
Barsalote, E,B., Gapasin, R.M,, (1995) Pathogenecity of the root-knot nematode, Meloidogyne graminicola on upland rice.
Philippine Phytopathology Volume 31
Rasco, E.T. Amante, V.D.R. Gapasin, R.M., (1996) Development of improved field screening methodolgy for sweet potato scab.
Terminal Report (ASPRAD)
Galano, C.D. Gapasin, R.M. Lim, J.L., (1996) Efficacy of Paecilomyces lilacinus isolates for the control of root-knot nematode (Meloidogyne incognita).
Annals of Tropical Research Volume 18
Gapasin, R.M., (1996) Evaluation of Paecilomyces liacinus (Thom.) samson for the control of Pratylenchus sp.in corn.
Biocontrol Volume 1
Gapasin, R.M. Barsalote, E.B. Lim, J.L., (1996) Survey and identification of plant parasitic nematodes associated with upland weeds and weed response to rice root-knot nematode, Meloidogyne graminicola.
Philippine Journal of Weed Science Volume 21
Zamora, O.B. Gapasin, R.M., (1997 (inpress)) Reaction of different corn, legumes and rootcrop varieties to the rice root-knot nematode, Meloidogyne graminicola
Philippine Phytopathology
Diongzon, M.L.D. Gapasin, R.M., (1997) The effect of fungicide, insecticide and herbecide on mycorrhiza and Rhizobium on mungbean.
Philippine Phytopathology
Gapasin, R.M. Gergon, E.B. Prot, J.C., (1996) Meloidogyne graminicola: A Potential problem in Rice- Vegetables system. A paper presented during the symposium on IPM in Rice-vegetables System: Status
Constraints and prospects held at PCARRD, Los Ba?os, Laguna
Gapasin, R.M. Lim, J.L. Ranchez, C.V., (1997) Mycorrhize from selected tree species in Mt. Pangsugan, Leyte, Philippines and their effect on tree growth. A paper presented during the International Conferences on Reforestation with Philippines species At Mac Arthur Beach
Resort Tacloban City, Philippines
Gapasin, R.M. Judal, M.L. Pile, C. Gergon, E.B. Halbrendt, J., (1997) Management of root-knot nematode (Meloidegyne graminicola) in rice-onion system. A paper presented during the IPM-CRSP Symposium,
Planning Workshop and Technical Commitee Meeting at Guatemala City
Diongzon, M.L.D. Gapasin, R.M., (2001) The animal manure and mycrorrhiza singly and in combination for the control of the rice root-knot nematode (Meloidogyne graminicola Golden and Birchfield) in green onion (Allium fistulosum L.)
25th Anniversary and 23rd Annual Scientific Meeting, NAST (Abstract)
Gergon, E.B. Brown, M. Balagot, G. Escaño, C. Gapasin, R.M. Miller, S.A., (2001) Influence of mycorrhizal fungi and Meloidogyne graminicola interaction on growth of onion (Allium cepa L.)
NAST 25th Anniversary and 23rd Annual Scientific Meeting
Gapasin, R.M., (1999) Meloidogyne graminicola: a nematode pest from rice to onion.
NAST 21st Annual Scientific Meeting
Awards:
- Pest Management Award for Outsatnding Contribution as a Scientist and Administratotor, PMCP, 2002
- Ten Outstanding Scientist of the Philippines (TOYS) in Agricculture, National Academy of Science and Technology, 1987
- Outstanding Alumni for Research and Development, University of Southern Mindanao, 1988
- Outstanding Basic Research, VICARP, 1993
- Outstanding Young Scientist Award (Plant Pathology), National Academy Science and Technology-Department Of Science and Technology, 1987
- Regional Pantas Award for Science and research Category, VICARP, 2002