Dr. J Ole Becker

Professor of Cooperative Extension in Nematology and Nematologist

Dept. Nematology, UC Riverside
2250 Spieth Hall
Riverside, CA 92521-0415
(951) 827-2185
obecker@ucr.edu Create VCard




Following postdoctoral work on four continents and various R&D positions in agrochemical and biotechnological industries, Ole Becker has been a faculty member in the UC Riverside's Department of Nematology since 1992. In addition to basic and mission-oriented research on the biology, ecology, and management of plant-parasitic nematodes, he focuses on extending information about integrated pest management of plant-parasitic nematodes to UC advisors, growers, industry representatives, and the general public.

Former Institutions

Ciba-Geigy Ltd., Basel, Switzerland

Plant Genetic Systems, Ghent, Belgium



Dr. sc. ag., Plant Pathology 1982, Georg August University, Göttingen, Germany

Dipl. Ing. Agricultural Sciences 1980, Georg August University, Göttingen, Germany



Fellow, American Association for the Advancement of Science, 2007

Invitational Fellowship, Japan Society for the Promotion of Science, 2002-03

UC Riverside Non-Senate Distinguished Researcher Award, 1999

Centinela Chapter Research Award, California Association of Nurseryman 1997

Novartis Award for Outstanding Contributions to Agriculture, Society of Nematologists 1996-97 


Dr. sc. agr. Plant Pathology, Georg August Universität, Göttingen, Germany. 1982
Dipl. Ing. Agricultural Sciences, Georg August Universität, Göttingen, Germany. 1980





Integrated pest management of plant-parasitic nematodes

Areas of Expertise (click to see all ANR academics with this expertise)


Peer Reviewed

  • Hill, D.S., J.I. Stein, N.R. Torkewitz, A.M. Morse, C.R. Howell, J.P. Pachlatko, J.O. Becker, and J.M. Ligon 1994. Cloning of genes involved in the synthesis of pyrrolnitrin from Pseudomonas fluorescens and the role of pyrrolnitrin synthesis in biological control of plant disease. Applied and Environmental Microbiology 60:78-85.

  • Gaffney, T.D., S.T. Lam, J. Ligon, K. Gates, A. Frazelle, J. Di Maio, S. Hill, S. Goodwin, N. Torkewitz, A.M. Allshouse, H.-J. Kempf, and J.O. Becker 1994. Global regulation of expression of antifungal factors by a Pseudomonas fluorescensbiological control strain. Molecular Plant-Microbe Interactions 7:455-463.

  • Mundo-Ocampo, M., J.O. Becker, and J. Baldwin 1994. Occurrence of Belonolaimus longicaudatus in turf in the Coachella Valley. Plant Disease 78:529.

  • Noling, J.W.; Becker, J.O. 1994. The challenge of research and extension to define and implement alternatives to methyl bromide. Journal of Nematology 26: 573-586. 

  • Becker, J.O. and F.J. Schwinn 1993. Control of soil-borne pathogens with living bacteria and fungi: status and outlook. Pesticide Science 37:355-363.

  • Becker, J.O., C.A. Hepfer, G.Y. Yuen, S.D. Van Gundy, M.N. Schroth, J.G. Hancock, A.R. Weinhold, and T. Bowman 1990. Effect of rhizobacteria and metam-sodium on growth and root microflora of celery cultivars. Phytopathology 80:206-211.

  • Becker, J.O., S.F. Colbert, M.N. Schroth, and S.D. Van Gundy 1989. Field evaluation of a rhizobacterial strain for affecting root-knot nematodes. Biological and Cultural Tests for Control of Plant Diseases 4:31.

  • Becker, J.O., M. Monson, S.D. Van Gundy, and M.N. Schroth 1989. The use of a drip irrigation system for infestation of field plots with nematodes. Journal of Nematology 21:524-529.

  • Becker, J.O., E. Zavaleta-Mejia, S. Colbert, M.N. Schroth, A.R. Weinhold, J.G. Hancock, and S.D. Van Gundy 1988. Effects of rhizobacteria on root-knot nematodes and gall formation. Phytopathology 78:1466-1469.

  • Becker, J.O., C. Hepfer, S. Van Gundy, A.R. Weinhold, J.G. Hancock, and M.N. Schroth 1988. Growth response of celery cultivars after inoculation of seedlings with rhizobacteria. Biological and Cultural Tests for Control of Plant Diseases 3:15.

  • Becker, J.O. and R.J. Cook 1988. Role of siderophores in suppression of Pythium species and production of increased-growth response. Phytopathology 78:778-782.

  • Becker, J.O., S. Van Gundy, J.G. Hancock, A.R. Weinhold, and M.N. Schroth 1987. Biocontrol of root pathogens of celery by treating transplants with rhizobacteria. Biological and Cultural Tests for Control of Plant Diseases 2:10.

  • Zhang, B.X. and J.O. Becker 1987. Biological control of plant pathogens. Scientific Technology (Beijing) 3:54 - 57.

  • Becker, J.O., E. Messens, and R.W. Hedges 1986. A convenient autoradiographic technique for study of uptake of minerals by plant roots and the effect of environmental factors upon the process. Plant and Soil 92:299-302.

  • Becker, J.O. and H. Fehrmann 1985. Fungal populations of the haulm base of wheat. FEMS Microbiology Ecology 31:311-315.

  • Becker, J.O., E. Messens, and R.W. Hedges 1985. Influence of agrobactin on the uptake of ferric iron by plants. FEMS Microbiology Ecology 31:171-175.

  • Becker, J.O., R.W. Hedges, and E. Messens 1985. Inhibitory effect of pseudobactin on the uptake of ferric iron by higher plants. Applied and Environmental Microbiology 49:1090-1093.

  • Darvas, J.M. and J.O. Becker 1984. Failure to control Phytophthora cinnamomi and Pythium splendens with metalaxyl after its prolonged use. Citrus and Subtropical Fruit Journal 603: 9-11.

ANR Workgroup Associations

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