UC Davis Plant SciencesSteve Fennimore




Project director: his role will be to evaluate the efficiency and effectiveness of steam for soil disinfestation in flower and strawberry. He will coordinate field demonstration, research activities, outreach and economic analysis with researcher and growers.






University of Oregon



Public Affairs

University of California, Davis



Weed Science

Purdue University



Weed Science

employment history

1997 to present, University of California, Davis.

Extension Specialist and Weed Ecophysiologist, Department of Plant Sciences, July 2009 to present.
Associate Extension Specialist and Weed Ecophysiologist, Department of Plant Sciences, July 2003 to June 2009.
Assistant Extension Specialist and Weed Ecophysiologist, Department of Vegetable Crops, Sept. 1997 to June 2003.

1994 to 1997, Purdue University.

Graduate Research Assistant and Purdue Research Fellow, Department of Botany and Plant Pathology.

1983 to 1994, Zeneca Agricultural Products (Previously ICI Agricultural Products).

Field Development Representative, Lafayette, IN 1988 -1994.
Assistant Plant Physiologist, Visalia, CA 1983-1987.


1. American Society for Horticultural Science.
2. California Weed Science Society.
3. Weed Science Society of America.
4. Western Society of Weed Science.
5. Methyl Bromide Alternatives Outreach.
6. European Weed Research Society – Physical and Cultural Weed Control Workgroup


1. Purdue Research Foundation Fellowship, 1995 – 1997.
2. Phi Kappa Phi, 1997.
3. DowElanco Graduate Scholarship, 1997.
4. Dupont Graduate Scholarship, 1997.
5. California Weed Science Society Award of Excellence, 2001.


1. USDA-CSREES, Methyl Bromide Transitions, Systems to disinfest soil with heat for flower and strawberry production, $458,000.
2. USDA-ARS Specific Cooperative Agreement, Methods to facilitate the adoption of alternatives to methyl bromide soil fumigation by California strawberry growers, $274,298.
3. California Dept. of Food and Agriculture, Integration of a robotic cultivation system into California vegetable crop production systems, $119,785.


1. Boyd, N.B., E.B. Brennan and S.A. Fennimore.  2006. Stale Seedbed Techniques for Organic Vegetable Production. Weed Technology 20:1052-1057.

2. Shem-Tov, S., S.A. Fennimore and W.T. Lanini.  2006. Weed Management in Lettuce (Lactuca sativa) with Pre-Plant Irrigation. Weed Technology 20:1058-1065.

3. Klose, S., H.A. Ajwa, S.A. Fennimore, F.N. Martin, G.T. Browne, and K.V. Subbarao. 2007.  Dose response of weed seeds and soilborne pathogens to 1,3-D and chloropicrin.  Crop Protection 26:535-542.

4. Daugovish, O., S.A. Fennimore and R.F. Smith.  2007. Herbicide evaluation for fresh market celery. Weed Technology 21:719-723.
5. García-Méndez, E., D. García-Sinovas, M. Becerril, A. De Cal, P. Melgarejo, A. Martínez-Teceño, S. Fennimore, C. Soria, J.J. Medina and J.M. López-Aranda.  2008. Chemical Alternatives to Methyl Bromide for Weed Control and Runner Plant Production in Strawberry Nurseries. HortScience. 43:177-182.

6. Fennimore, S.A., J.M. Duniway, G.T. Browne, F.N. Martin, H.A. Ajwa, B.B. Westerdahl,  R.E. Goodhue, M.J. Haar and C.Q. Winterbottom. 2008. "Methyl bromide alternatives evaluated", California Agriculture: Vol. 62: No. 2, Page 62-67. http://repositories.cdlib.org/anrcs/californiaagriculture/v62/n2/p62

7. Fennimore, S.A., and D.J. Doohan.  2008.  The Challenges of Specialty Crop Weed Control, Future Directions.  Weed Technology. 22:364-372.

8. Slaughter, D.C., K. Giles, S.A. Fennimore, and R.F. Smith.  2008. Multispectral Machine Vision Identification of Lettuce and Weed Seedlings for Automated Weed Control. Weed Technology. 22:378-384.

9. Fennimore, S.A., M.J. Haar, R.E. Goodhue, and C.Q. Winterbottom. 2008. Weed Control in Strawberry Runner Plant Nurseries With Methyl Bromide Alternative. HortScience 43:1495-1500.

10. Klose, S., H. Ajwa, G.T. Browne, K.V. Subbarao, F.N. Martin, S.A. Fennimore and B.B. Westerdahl. 2008. Dose Response of Weed Seeds, Plant-Parasitic Nematodes, and Pathogens to Twelve Rates of Metam Sodium in a California Soil. Plant Disease 92:1537-1546.

11. Daugovish, O., S.A. Fennimore, M.J. Mochizuki.  2008. Integration of Oxyfluorfen into Strawberry (Fragaria x ananassa) Weed Management Programs. Weed Technology 22:685-690.

12. Lopez-Aranda, J.M., L. Miranda, J.J. Medina, C. Soria, B. de los Santos, F. Romero, R.M. Perez-Jimenez, M. Talavera, S.A. Fennimore and B.M. Santos. 2009. Methyl Bromide Alternatives for High Tunnel Strawberry Production in Spain. HortTechnology 19:187-192.

13. Bensen, T.A., R.F. Smith, K.V. Subbarao, S.T. Koike, S.A. Fennimore and S. Shem-Tov. 2009. Mustard and Other Cover Crop Effects Vary on Lettuce Drop Caused by Sclerotinia minor and on Weeds.  Plant Disease 93:1019-1027.

14. Fennimore, S.A., L.J. Tourte, J.S. Rachuy, R.F. Smith and C.A. George. 2010. Evaluation and Economics of a Machine-Vision Guided Cultivation Program in Broccoli and Lettuce. Weed Technology 24:33-38.

© UC Davis | Steve Fennimore, Department of Plant Sciences | One Shields Ave | Davis, CA 95616 | Last update: May 17, 2010