Scientist Profile

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Reynaldo E. De La Cruz

Forestry, Outstanding Young Scientist (1984)

Expertise: Forestry, Tree Nutrition Research, Seed Biology, Reforestation, Agroforestry

Dr. Reynaldo De LA Cruz is recognized of his researches in the field of forestry. Dr. Dela Cruz’ work became one of the foundations of a successful nursery and the field establishments of selected commercial species in the Philippines. He was instrumental in the establishment of several research laboratories at the College of Forestry of University of the Philippines Los Baños.

Affiliation

Associate Professor 2, University of the Philippines, Los Baños, Laguna, Philippines

Associate Professor IV, University of the Philippines at Los Banos, Los Baños, Laguna

Associate Professor V, University of the Philippines, Los Baños, Laguna, Philippines

Professor I, University of the Philippines, Los Baños, Laguna, Philippines

Professor II, University of the Philippines, Los Baños, Laguna, Philippines

Professor IV, University of the Philippines, Los Baños, Laguna, Philippines

Associate Professor 1, University of the Philippines, Los Baños, Laguna, Philippines

Assistant Professor I, University of the Philippines, Los Baños, Laguna, Philippines

Assistant Professor II, University of the Philippines, Los Baños, Laguna, Philippines

Assistant Professor I, University of the Philippines, Los Baños, Laguna, Philippines

Association

    • Xi Sigma Pi Honor Society of Forestry, Florida Chapter, Member
    • National Research Council of the Philippines, Member
    • International Society of Foresters, Member
    • Gamma Sigma Delta Honor Society of Agriculture, Member
    • Society of Filipino Forester, Member
    • Soil Science Society of America, Member

Employment

    • Forest Biological Science (FBS) Department, UPLB-CF, College, Laguna, Research Assistant, 1965 Je 1-D 31
    • Forest Biological Science (FBS) Department, UPLB-CF, College, Laguna, Instructor, 1966 Ja 1-1974 Jl 2

Award

    • Outstanding Young Scientist (Forestry), National Academy of Science and Technology (NAST)-DOST, 1984
    • Scholarship, Bureau of Forestry, 1961-1965
    • Scholarship, University of Florida, 1969-1974
    • Professional Chair in Forest Biological Sciences, Don Ramon Arevalo, 1980
    • Most Outstanding Researcher Award , UPLB College of Forestry, 1981
    • Most Oustanding Alumni, Researcher Category , UPLB College of Alumni, 1982
    • Governing Board Member, Tropical Forest Biology , 1982 - 1984
    • Ten Outstanding Young Scientist Award, National Academy of Science and Technology (NAST), 1984
    • Three Outstanding Young Scientist Award in Forestry, Philippine Forest Research Society, 1984
    • Nominated Ten Outstanding Young Men of the Philippines , , 1984
    • Research Fellow, East West Center, Hawaii , 1985 S 30
    • Professional Chair In Forestry , SEARCA , 1984 - 1986
    • International Inventor, , 1986
    • Presidential Award, Most Outstanding Researcher, University of the Philippine System, 1986
    • IBM Science and Technology Award, , 1987
    • Award for Technology and Development, Crop Science Society of the Philippines, 1988
    • Achievement Award in Agriculture, Philippine National Science Society, 1989
    • Likas Yaman Award, Department of Environment and Natural Resources , 1989
    • PANTAS Award , PCARRD Anniversary, 1989 N 14
    • Visiting Scholar, Institute of Pertanian, Bogor Indonesia, 1990 My - Je
    • Visiting Scholar , Institute of Pertanian, Bogor, Indonesia, 1991 Je - Jl

Research

    • Effects of water stress on 5 fast-growing tree species [Completed]
    • Mycorrhiza in Benguet pine [Completed]
    • Fertilization studies in Benguet pine seedlings [Completed]
    • Macronutrient requirements of some fast-growing tree species [Completed]
    • Relationships between nutrition and the incidence of shoot moth and needle blight in pines [Completed]
    • Physiology of fast growing tree species [Completed]
    • Phenology of fast growing tree species [Completed]
    • Mycorrhizae in trees and agronomic plants [Completed]
    • Seed biology of forest tree [Completed]
    • Micronutrient requirements of some-fast growing tree species [Completed]
    • Pilot testing of mycorrhizal tablets in pines and Eucalyptus [Completed]
    • Endomycorrhiza for agroforestry in marginal lands [Completed]
    • Application of biological nitrogen fixation and VA Mycorrhiza in the reforestation of marginal uplands [Completed]
    • Testing the effectiveness of mycorrhizal fungi and strains [Completed]
    • Effects of mycorrhizal inoculation and other nursery pre-conditioning treatments on field survival and growth of bare-root planted eucalyptus and dipterocarps [Completed]
    • Application of mycorrhizal technologies in reforestation (BIOTECH core project) Pilot testing the effectiveness of VA Mycorrhiza in Reforestation (BIOTECH-DENR Project) [On-going]
    • Pilot testing of VA Mycorrhiza for peanuts and mungbeans (BIOTECH-DA Project) [On-going]
    • Development of a direct-seeding technology for agroforestry crops using mycorrhiza (PANTAS Award Project) [On-going]
    • Application of mycorrhiza in Re-afforestation Programmes in the Philippines (BIOTECH-EEC Project) [On-going]
    • Endomycorrhizal fungus inoculum production techniques (BIOTECH-USAID-Israel Project) [On-going]
    • Pilot Testing the Effectiveness of V A Myccorhiza in Reforestation [On-going]

Papers Presented

    • Species Selection and Fertilization: Reforestation Strategies for Philippine Grasslands , Symposium Forest Regeneration in Southeast Asia, Bogor, Indonesia
    • A Preliminary Study on the Growth Development of Giant Ipil-ipil (Leucaena leucocephala) Lam de Wit) Seedlings Inoculated with Mycorrhiza and Phosphate Solubilizing Bacteria, Symposium International Foundation of Science, Serdang, Malaysia
    • The Potentials of Mycorrhiza in Agroforestry Practices , 2nd Forestry Teachers Development Course, Center for Forestry Education for Asia and Southwest Pacific Regions
    • Growth Performance and Nitrogen-phosphorus Nutrition of Ipil-ipil Seedlings in Apatite Medium as Affected by Mycorrhizal Inoculation, Symposium on International Foundation of Science, Serdang, Malaysia
    • Applications of Mycorrhizal Technologies in Agroforestry, Symposium on Biological Fertilizers, PCARRD, Los Banos
    • Growth of Some Dipterocarp Seedlings in Different Soil Types and Inoculated with Different Ectomycorrhizal Fungi, Symposium on Forest Regeneration in Southeast Asia, BIOTROP, Bogor, Indonesia
    • Technologies for the Inoculation of Mycorrhiza to Pines in the ASEAN , Workshop on Nursery and Plantation Practices in the Asean, Jakarta, Indonesia
    • Screening for Effectiveness of Four VA Mycorrhizal Fungi on Acacia Auriculiformis in Infertile Soil, Sylvatrop: Philippine Forest Research Journal
    • Practical Aspects of Plant Anatomy, Plant Physiology and Growth in Relation to Pests and Diseases, DENR Training Course on Forest Pests and Diseases. Pansol, Calamba, Laguna, Philippines
    • Mycorrhizal Research Techniques for Agroforestry, Training Course on Research Techniques in Agroforestry
    • Improved Technology in Reforestation: The Use of Mycorrhiza, Training/Symposium on Reforestation Planning. Institute of Forest Conservation, College of Forestry, UPLB, College, Laguna, Philippines
    • The Role of Academic, Research Institutions in the Development of Seed Technology for Agroforestry Species, Symposium Workshop on Emerging Seed Technology for Agroforestry Species, UP Los Banos, College, Laguna
    • Ectomycorrhizal Tablets for Eucalyptus and Pinus Species, Conference on Nitrogen Fixing Trees, Marburg, Federal Republic of Germany
    • Growth of Acacia auriculiformis and Acacia mangium in a Marginal Grassland in Response to Inoculation with VA Mycorrhiza and/or Rhizobium , Conference on Nitrogen Fixing Trees, Marburg, Federal Republic of Germany
    • Tree Technologies with Potential to Contribute to Sustainability in marginal Uplands of Southeast Asia, Technologies for Sustainable Agriculture on Marginal Uplands in Southeast Asia, Ternate, Cavite, Philippines
    • Current Status of Nursery and Field Applications of Ectomycorrhiza in the Philippines, 8th North American Conference on Mycorrhiza, Jackson Hole, Wyoming, USA
    • Inoculation of VA Mycorrhiza for the Improvement of Growth and Yield of Agricultural Crops, Fruit Trees and Forest Tree Species in a Grassland Soil, 13th Annual Scientific Meeting of the National Academy of Science, Philippine International Convention Center, Manila, Philippines
    • Growth of Acacia Auriculifonnis in a Marginal Grassland in Response to Inoculation with VA Mycorrhiza and/or Rhizobium, 2nd ASEAN Conference on Mycorrhiza and Training Course on Mycorrhiza Research, Chiang Mai, Thailand
    • Application of Mycorrhizal Fungi and Rhizobium for Advanced Silviculture, 2nd ASEAN Conference on Mycorrhiza and Training Course on Mycorrhiza Research held in Chiang mai, Thailand
    • Status of Mycorrhiza Research in the Philippines, 2nd ASEAN Conference on Mycorrhiza and Training Course on Mycorrhiza Research held in Chiang mai, Thailand
    • Effectiveness of Ectomycorrhizal Fungi Entrapped in Alginate Beads on Pines and Eucalyptus, 2nd ASEAN Conference on Mycorrhiza and Training Course on Mycorrhiza Research, Chiang Mai, Thailand
    • Laboratory Practicum on Mass Inoculant Production of Ecto and Endomycorrhizal Fungi , 2nd ASEAN Conference on Mycorrhiza and Training Course on Mycorrhiza Research, Chiang Mai, Thailand
    • Ectomycorrhizal Tablets for Pines and Eucalyptus Species, 2nd ASEAN Conference on Mycorrhiza and Training Course on Mycorrhiza Research held in Chiang Mai, Thailand
    • Estimation on the Contribution of V A Mycorrhizal Fungi to Biological Nitrogen Fixation, 2nd ASEAN Conference on Mycorrhiza and Training Course on Mycorrhiza Research held in Chiang mai, Thailand
    • Status of Bio-reforestation in the Philippines , Pre-Workshop on Bioreforestation, IUFRO-Japan, Bogor, Indonesia
    • The Effects of Mycorrhizal Inoculation and Nursery Pre-Conditioning Techniques on the Field Survival and Growth of Bareroot Planted Eucalyptus deglupta Seedlings in the Philippines, USAID-PSTC Research Grantees Networking Meeting, Banff, Canada
    • Nitrogen fixation and mycorrhizae in Acacias in degraded grasslands, Tropical Acacias in East Asia and the Pacific, 1st Meeting of COGREDA, Phuket, Thailand
    • Applications of Mycorrhiza in Barerooting and Direct-seeding Technologies for Reforestation, BIO-REFOR Full Workshop held in Tsukuba Science City, Japan
    • Growth of Three Reforestation Species in Response to Inoculation with VA Mycorrhizal Fungi and Fertilization, BIO-REFOR Full Workshop, Tsukuba Science City, Japan
    • Application of Mycorrhizal Technologies for Agriculture and Forestry, 9th International Biotechnology Symposium and Exposition, Crystal City, Virginia, USA
    • Endo Mycorrhizal Research in the Philippines, IUFRO Workshop on Tropical Trees: Potential for Domestication in Edinburg, Scotland
    • Differential Mycorrhizal Dependency of Some Agricultural, Horticultural and Forestry Crops to Inoculation with Arbuscular Mycorrhizal Fungi, International Symposium on Management of Mycorrhiza in Agriculture, Horticulture and Forestry, Perth, Western Australia
    • Screening for effectiveness of 3 VAM fungi on 4 provenances of Acacia aUJiculifonnis, International Symposium on Management of Mycorrhiza in Agriculture, Horticulture and Forestry. Perth, Western Australia.
    • Biofertilizers, Workshop to Revise the Agroforestry Information Kit, International Institute of Rural Reconstruction, Silang, Cavite
    • Differential Mycorrhizal Dependency of Some Agricultural, Horticultural and Forestry Crops to Inoculation with Arbuscular Mycorrhizal Fungi, International symposium on Management of Mycorrhiza in Agriculture, Horticulture and Forestry, Perth, Western Australia
    • Mycorrhiza -- An Alternative to Energy-based Inorganic Fertilizers, PCARRD-Sponsored Workshop on the Re-direction of Fertilizer Research, Tropical Palace, Paranaque, Metro Manila
    • The Application of Mycorrhiza in Direct Seeding Technology for Reforestation., R and D Regional Symposium and Planning Workshop of STARRDEC, Don Severino Agricultural College, Indang, Cavite.
    • Constraints and Strategies for the Regeneration of Imperata Grasslands, Symposium on Forest Regeneration, Bogor, Indonesia
    • Mycorrhiza: Its Implication to Upland Development, 2nd National Seminar-Workshop in the Upland at VISCA, Baybay, Leyte
    • Enhancing Coconut and Survival in the field with Bio-fertilizer and Bio-Organic Materiall Application, 33rd NAST Annual Scientific Meeting

Education

    • University of Florida, Gainesville, Florida, USA, Ph.D. in Forestry, 1974
    • University of Florida, Gainesville, Florida, USA, MS in Forestry (Major in Tree Nutrition), 1971
    • University of the Philippines, College of Forestry, College, Laguna, BS Forestry (Major in Forest Resources Management), 1965

Publication

    • Dela Cruz, R.E., Hubbell, D.H., (1974) The biological control of the damping-off fungus Macophomina ph aseolin a on slash pine seedlings by a hyperparasite Polyporus sp
    • Soil Biology and Biochemistry Volume 8
    • Dela Cruz, R.E., Smith, W.H., (1971) The effect of osmotic stress on the germination of slash pine seeds
    • Soils Crop Science Society Fla Volume 30
    • Dela Cruz, R.E., W.L. Pritchett and D.H. Hubbell, (1975) Nitrogen and phosphorus fertilizer movement on a Myakka fine sand
    • Soils Crop Sci. Fla. Volume 34
    • Dela Cruz, R.E., Ferrera, R.C., Hubbell, D.H., (1975) The host range of the hyperparasite Polyporus sp.
    • Soil Biology and Biochemistry Volume 8
    • Quintos, M.M., L.D. Sandoval and Dela Cruz, R.E. , (1975) The effect of light quality and duration on the germination of Kaatoan bangkal seeds
    • Pterocarpus Volume 1
    • Gamboa, P.P., Dela Cruz, R.E., (1976) The effects of light quality and chemical reagents on the germination of Anthocephalus chinensis Rich ex. Walp. Seeds
    • Pterocarpus Volume 2, No. 1
    • Fernando, E.S. and Dela Cruz, R.E. , (1975) Effect of soil moisture stress on shoot growth of Anthocephalus chinensis. Rich ex. Walp. and Albiziafalcataria (L) Fosb. seedlings
    • Pterocarpus Volume 2
    • Mendoza, V.B., Dela Cruz, R.E., (1978) Adaptability of six tree species to cogonal areas. III. Field experiment and additional information
    • Sylvatrop Philippine Forest Research Journal Volume 3(2)
    • Glori, A.V., Dela Cruz, R.E., Domingo, I.L., (1978) Drought resistance of yemane (Gmelina arborea) and Kaatoan bangkal (Anthocephalus chinensis)
    • Sylvatrop Philippine Forest Research Journal Volume 3(4)
    • Uri-dela Cruz, L., Dela Cruz, R.E., Montecillo, L.D., (1978) Responses of outplanted Kaatoan bangkal (Anthocephalus chinensis) Rich ex. Walp seedlings to nitrogen fertilizer application and mulching treatments. I. Survival and growth
    • Pterocarpus Volume 4(1)
    • Uri-dela Cruz, L., Dela Cruz, R.E., Montecillo, L.D., (1978) Responses of outplanted Kaatoan bangkal (Anthocephalus chinensis Rich ex. Walp) seedlings to nitrogen fertilizer application and mulching treatments. II. Soil Properties
    • Pterocarpus Volume 4(1)
    • Uri-dela Cruz, L., De la Cruz, R.E., Montecillo, L.D., (1978) Responses of outplanted Kaatoan bangkal (Anthocephalus chinensis Rich ex Walp) seedlings to nitrogen fertilizer application and mulching treatments. III. Nutrient concentration and uptake
    • Pterocarpus Volume 4(2)
    • Dela Cruz, R.E., (1980) Role of Mycorrhizae in the survival, growth and development of introduced pine species in Mt. Makiling
    • Pterocarpus
    • Dela Cruz, R.E., Pitpit, F.D., Lamanilao, J.D., (1981) Effects of mycorrhizal inoculations on the survival growth and nutrient absorption capacities of Benguet pine seedlings
    • Pterocarpus
    • Dela Cruz, R.E., Pitpit, E.D., Lamanilao, J.D., (1982) Fertilization studies of nursery-grown Benguet pine seedlings
    • Pterocarpus
    • Yamaguchi, H., Nobochi, A., De Guzman, E.D., Dela Cruz, R.E., (1979) Survey of forest insect on nurseries and plantations
    • Pterocarpus Volume 5
    • Yamaguchi, H., Nobuchi, A., de Guzman, E.D., (1979) The biology of Ips calligraphus (Germer) (Coleoptera) and its role in the degradation of Benguet pine
    • Pterocarpus Volume 5
    • Gianan, N., De la Cruz, R.E., (1982) Fates of phosphorus fertilizer in grassland soils
    • Sylvatrop, Philippines Forest Research Journal Volume 7(2)
    • Dela Cruz, R.E., Llanto, S.S., Teodoro, L., (1984) Relationships between nutrient content in soil and tissues and the incidence of needle blight and shoot moth in Benguet pine
    • Sylvatrop Volume 9
    • Siababa, N.S., Dela Cruz, R.E., (1983) Effects of mycorrhiza and Rhizobium inoculations on the growth of ipil-ipil (Leucaena leucocephala Lam de Wit) seedlings
    • Pterocarpus
    • Dela Cruz, R.E., Monsalud, R.G., Bartolome, H.T., (1984) Effects of mycorrhizal capsules and tablets on the growth of Benguet pine seedlings
    • Sylvatrop
    • Siababa, N.S., De la Cruz, R.E., (1986) How do mycorrhiza and rhizobium inoculation affect the growth of ipil-ipil (Leucaena leucocephala Lam de. Wit) seedlings
    • NSTA Technology Journal Volume 11
    • Dela Cruz, R.E. , (1984 My 9-11) Constraints and strategies for the regeneration of Imperata grasslands
    • BIOTROP Special Publication, Symposium on Forest Regeneration, Bogor, Indonesia
    • Dela Cruz, R.E., Teodoro, L.M., (1987) Relationships between nutrition and the incidence of needle blight and shoot moth in pines
    • Southeast Asian Regional Centre for Tropical Biology (SEAMEO BIOTROP) Special Publication
    • Dela Cruz, R.E., (1987) Status of Mycorrhiza research in the Philippines and its implications to National Development
    • SEARCA Technical Bulletin No.8.
    • Dela Cruz, RE., Manalo, M.Q., Aggangan, N.S., Tambalo, J.D., (1988) Growth of tree legume trees inoculated with VA mycorrhizal fungi and Rhizobium
    • Plant and Soil Volume 108
    • Dela Cruz, R.E., Aggangan, N.S., (1990) Mycorrhiza seed/seedling inoculants
    • Sustainable Agriculture Newsletter Volume 2, No. 3
    • Aggangan, N.S., De la Cruz, R.E., (1991) Growth improvement of two forest tree legumes by VA Mycorrhizal inoculations
    • The Philippine Journal of Biotechnology Volume 2, No. 1
    • De la Cruz, R.E., () Bioassociation aspects of growing Acacia mangium
    • Forestry/Fuel wood Research and Development Project (F/FRED)-Multi-purpose Tree Species (MPTS) Network, Bangkok, Thailand
    • De la Cruz, R.E., (1992) Imperata cylindrica grasslands in the Philippines
    • Forestry/Fuel Wood Research and Development Project (F/FRED) Publication
    • Aggangan, N.S., Lorilla, E.B., de la Cruz, R.E. , (1988) Screening for effectiveness of four VA mycorrhizal fungi on Acacia auriculiformis in infertile soil
    • Sylvatrop: Philippine Forest Research Journal
    • De La Cruz,R.E., (2011 JL 13-14) Enhancing coconut growth and Survival in the Field with Bio- fertilizer and Bio-Organic Material Application
    • Transactions of the National Academy of Science and Technology. Abstract of papers Volume 33, No. 1

Trainings

    • Tree Improvement Symposium, 1974, Baguio City
    • International Union Forest Research Organization (IUFRO), 1971, Gainesville, Florida
    • Soil Science Society of America, 1970, Tucson, Arizona
    • Biological Aspects of Silviculture, 1979 S 11-18, Bogor, Indonesia
    • Mycorrhiza in Forestry, 1979 S 11-18, Bogor, Indonesia
    • Soil Science Society America Proceedings, 1974, Las Vegas, Nevada
    • Symposium on Natural Regeneration in Southeast Asia, BIOTROP, Bogor, Indonesia
    • Training Course in Forest Biology, BIOTROP, 1979, lndonesia
    • Biological Aspects of Silviculture. BIOTROP, 1981 S, Indonesia
    • Forest Pathology Training Course in Southeast Asia, 1978 - 1981, College, Laguna
    • Soil Science Society of America, 1970, Tucson, Arizona
    • Symposium of Forest Nurseries and Plantation Technologies, 1983 S 03 - 1983 S 08, Jakarta, Indonesia
    • Workshop on Forest Seed, 1983, Bangkok, Thailand
    • Educational Sudy Tour, 1993 F - 1993 Mr, Tokyo, Japan
    • Observation Tour of Forest Research and Development, 1984 Mr, Tokyo Japan
    • 2nd BNF Coordination Meeting of BOSTID grantees, 1985 Jl, Maui Hawai
    • Ameliorative and Protective Roles of Agroforestry, 1985 S 04 - 1985 S 11, West Center,UPLB
    • Mycorrhiza and Rhizobium.Community Development Training Program for Foresters, 1986 My 05, UPLB
    • 3rd BNF Coordination Meeting of BOSTID grantees, 1986 Ag 04 - 1986 Ag 08, Rio de Janeiro, Brazil
    • Workshop on Multi Purpose Tree Speceis(MPTS) for Fuelwood, 1986 S 22 - 1986 S 28, Bangkok,Thailand
    • Mycorrhiza.Regional Workshop on Biotechnology in Agriculture, 1986 O 08 - 1986 O 11, SEARCA & BIOTECH, College, Laguna
    • Conference of Multi Purpose Tree Species, 1986 D, Kuala, Lumpur Malaysia
    • Mycorrhiza, 1987 F 19 - 1987 F 25, Yogyakarta, Indonesia
    • Symposium on the Contribution of BNF to Plant Production, 1987 Ag 03 - 1987 Ag 07, Cisaura, Bogor, Indonesia
    • 4th BNF Coordination Meeting of BOSTED Grantees, 1987 Ag, Bogor, Indonesia
    • 7th North American Conference on Mycorrhiza, 1987 My 03 - 1987 My 08, Gainesville, Florida
    • Future Cordillera Schools with Particular emphasis on the Educational Aspects, 1988 Ap 16, Easter School Baguio City
    • Some Beneficial Microorganism and their Application to Reforestation, 1988 Jl 23, Carranglan, Nueva Ecija
    • 5th Biological Nitrogen Coordination Meeting of BOSTID, 1988 S 04 - 1988 S 10, Faisalabad, Pakistan
    • Inoculants and Organic Fertilizer National Forestation Program Regional Workshop, 1988 S 14, Naga City
    • Some beneficial Microorganisms and their applications to Agroforestry, 1988 S 14 - 1988 N 08, UP Los Baños
    • Regional Training Workshop on Mycorrhiza, 1988 O 16 - 1988 O 29, UPLB BIOTECH
    • Mycorrhiza Researchers on MPTS, 1989 Ja 19 - 1989 Ja 20, Los Baños Laguna
    • Coordination Meeting on Biological Nitrogen Fixation, 1989 Jl 24 - 1989 Jl 27, Ames, Iowa, U.S.A
    • North American Conference on Biological Nitrogen Fixation, 1989 Jl 28 - 1989 Ag 04, Ames, Iowa, U.S.A
    • Conference on Nitrogen Fixing Trees, 1989 O 08 - 1989 O 12, Marburg, Federal Republic of Germany
    • 8th North American Conference on Mycorrhiza, 1990 Ag 05 - 1990 Ag 08, Jackson Hole, Wyoming, U.S.A
    • ASEAN Regional Training Course on Mycorrhiza, 1991 Mr 17 - 1991 Mr 19, Chiang Mai,Thailand
    • Second Asian Conference on Mycorhiza, 1991 Mr 12 - 1991 Mr 15, Chiang Mai,Thailand
    • Pre-Workshop on Bio-reforestation, 1991 Mr 25 - 1991 Mr 30, Bogor, Indonesia
    • Participant Networking Conference, 1991 S 1 - 1991 S 6, Banff, Canada
    • Symposium /Conference on Reforestation Technology Update, 1991 Ag 23, PCARRD Los Baños, Laguna, Philippines
    • BIO-REFOR Full Workshop, 1992 My 21 - 1992 My 22, Tsukuba, Japan
    • Tree Nutrition, 1979 S 11 - 1979 S 18, Bogor, Indonesia
    • Myccorhiza in Forestry, 1979 S 11 - 1979 S 18, Bogor, Indonesia