Dr. Whitney B. Brim-Deforest

County Director, Sutter and Yuba Counties and CE Rice and Wild Rice Advisor
Sutter-Yuba Counties
142A Garden Hwy
Yuba City, CA 95991
wbrimdeforest@ucanr.edu Create VCard

Also in:
Capitol Corridor MCP Cooperative Extension
Placer-Nevada Counties



Ph.D. Horticulture and Agronomy, University of California, Davis. 2016
M.S. International Agricultural Development, University of California, Davis. 2014
G.A.C. Development Practice, University of California, Davis. 2014
B.A. Biology, Music, Brown University. 2004


  • Award of Excellence
    Presented by California Weed Science Society,  2023
  • OutstandingPaper in Weed Sci
    Presented by Weed Science Society of America,  2021


Rice, Weeds

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


Peer Reviewed

  • Al-Khatib, K; Brim-DeForest, W; Eckert, J; Fischer, A. (Revised 2023) “Weeds” Chapter. In Espino LA, Greer CA, Al-Khatib K, Godfrey LD, Eckert JW, Fischer A, Lawler SP. Revised continuously. UC IPM Pest Management Guidelines: Rice. UC ANR Publication 3465. Davis, CA.

  • Galvin, L., Inci, D., Mesgaran, M., Brim-DeForest, W., & Al-Khatib, K. (2022). Flooding depths and burial effects on seedling emergence of five California weedy rice (Oryza sativa spontanea) accessions. Weed Science, 70(2), 213-219. doi:10.1017/wsc.2021.82

  • Rosenberg S, Crump A, Brim-DeForest W, Linquist B, Espino L, Al-Khatib K, Leinfelder-Miles MM and Pittelkow CM (2022) Crop Rotations in California Rice Systems: Assessment of Barriers and Opportunities. Front. Agron. 4:806572. doi: 10.3389/fagro.2022.806572

  • Brim-DeForest, W., Al-Khatib, K., & Fischer, A. (2022). Emergence and early growth of multiple herbicide–resistant and -susceptible late watergrass (Echinochloa phyllopogon). Weed Technology, 36(1), 101-109. doi:10.1017/wet.2021.86

  • Kanter, J., Clark, N, Lundy, ME, Koundinya, V., Leinfelder-Miles, M., Long, R., Light, S. E., Brim-DeForest, W. B., Linquist, B., Putnam, D, Hutmacher, R. B., & Pittelkow, C. M. (2021). Top management challenges and concerns for agronomic crop production in California: Identifying critical issues for extension through needs assessment. Agronomy Journal. 113: 5254– 5270. https://doi.org/10.1002/agj2.20897

  • Karn, E; De Leon, T; Espino, L; Al-Khatib, K; Brim-DeForest, W. (2020). Phenotypic Diversity of Weedy Rice (Oryza sativa f. spontanea) Biotypes Found in California and Implications for Management. Weed Science 68 (5), 485-495

  • Karn, E., De Leon, T., Espino, L., Al-Khatib, K., & Brim-DeForest, W. (2020). Effects of competition from California weedy rice (Oryza sativa f. spontanea) biotypes on a cultivated rice variety. Weed Technology, 1-9. doi:10.1017/wet.2020.35

  • De Leon, Teresa; Karn, Elizabeth, et al. (2019). Genetic variation and possible origins of weedy rice found in California. Ecology and Evolution. 9:10, 5835-5848. 

  • Brim-DeForest, WB; Al-Khatib, K, et al. (2017). Predicting Yield Losses in Rice Mixed-Weed Species Infestations in California. Weed Science. 65:1, 61-72.
  • Brim-DeForest, WB; Al-Khatib, K, et al. (2017). Weed Community Dynamics and System Productivity in Alternative Irrigation Systems in California Rice. Weed Science. 65:1, 177-188. 

  • Bishop, Kristin & Brim-DeForest, Whitney. (2008). Kinematics of turning maneuvers in the Southern flying squirrel, Glaucomys volans. Journal of experimental zoology. Part A, Ecological genetics and physiology. 309. 225-42. 10.1002/jez.447. 

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