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Oli G. Bachie PhD

Imperial County Director
UC Cooperative Extension - Imperial County
1050 East Holton Road
Holtville, CA 92250-9615
obachie@ucanr.edu Create VCard

Also in:
San Diego County


Oli G. Bachie is the University of California Cooperative Extension (UCCE) Agronomy and Weed Management Advisor for Imperial, Riverside and San Diego counties. Bachie is also a county director (CD) for San Diego and Imperial counties. He is based at the UCCE office in San Diego and Imperial counties. Bachie's research focus primarily, but not limited to crops such as alfalfa, wheat, sudangrass, Bermudagrass, Kleingrass, cotton, sugar beets, Rhodes grass, and bioenergy crops, new alternative crops and their cropping systems. Bachie recently added a Weed Management assignment, serving San Diego, Imperial and Riverside Counties.  

Bachie earned his Ph.D. in Plant Biology from University of California Riverside (UCR) and has worked as an Assistant Research Specialist in the UCR Department of Nematology before coming to the UCCE Imperial office. His dissertation research explored Interdisciplinary pest management (insects, nematodes and weeds) potentials of cover cropping systems. He has also earned a Master’s degree in Forestry (MScF) from the University of Toronto, a Master’s degree in Agronomy (MSc) from the University of the Philippines and a Bachelor degree in Plant Sciences (BSc) from Haromaya University (Ethiopia).

Bachie has worked as an adjunct professor of network administration and Computer Architecture at National University and American University in San Diego, as research specialist at the San Diego State Universities and as an adjunct professor of Biology at the Victor Valley College (VVC) for over six years. He taught agricultural courses as an adjunct at the Imperial Valley College. 

Prior to moving to North America, Bachie worked at the Ministry of Agriculture in Ethiopia as an expert in crop protection, crop production and weed management.

Bachie provides research-based technical and educational assistance in agronomy and sustainable agriculture to agricultural producers, growers, farm operators, pest control advisors (PCAs) and other agricultural clientele in Imperial Valley, San Diego and Riverside counties. He develops and encourages adoption of research based cropping systems to improve crop productivity and yield with due consideration for environmental and ecological compatibilities.

Bachie is a good standing member of the American Society of Agronomy (ASA), Crop Science Society of America (CSSA), Soil Science Society of America (SSSA), the UCANR Desert workgroup, the Alfalfa and Forage workgroup, Western Society of Weed Sciences (WSWS), and National Association of County Agricultural Agents (NACAA). 


PhD , University of California, Riverside. 2011
MScF Forestry, Toronto University. 1996
MS Agronomy - Weed Science, University of the Philippines. 1990




Agronomy & Weed Management

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


Peer Reviewed

  • Dugassa, Begna; Diba, Fantahun, et al. (2021). Climate Change and Public Health in the Oromia Regional State in Ethiopia and Its Implications for the Nile Basin. American Journal of Public Health Research. 9:6, 257-269. 11/23/2021.
  • Devkota, Pratap; Bachie, Oli (2021). Evaluation of the summer slump application of saflufenacil on nondormant conventional alfalfa. Crop, Forage & Turfgrass Management. https://doi.org/10.1002/cft2.20095. 7, 8. March.
  • Montazar A., Bachie O. (2020). Feasibility of Moderate Deficit Irrigation as a Water Conservation Tool in California’s Low Desert Alfalfa. Agronomy. 10:11, 1-21.
  • Bachie O. G., Santiago L.O. (2019). Physiological Response of Onion Varieties to Varying Photoperiod and Temperature regimes. 9.
  • Bachie O., and W. Burayu (2019). Utilizing Local and Global Knowledge for Sustainable Agricultural Production: Lessons from Oromia and the American Low Desert. In 33rd Annual Conference Proceedings. page 304-318. The Oromo Studies Association. Jul 26-28, 2019. Rift Valley University. Finfinnee, Oromia.
  • Kaffka, S. R.; Bachie, O., et al. (2018). Comparison of surface furrow and subsurface drip irrigation systems in the Imperial Valley for root yield and quality, water use and susceptibility to late-season root rots. Proc. of the 76th Summer Congress of the International Inst. of Sugar Beet Res., Deauville France. June 5-7, 2018.
  • Natwick E., Bachie O. (2015). Cotton Insecticide Efficacy Against Sweet Potato Whitefly. Arthropod Management Tests. F32: 1-2.
  • Natwick E., Bachie O. (2015). Insecticide Efficacy Against Whitefly in Cotton. Arthropod Management Tests. F26: 1-2.
  • Aguiar, J.; Bachie, O., et al. (2014). "Response of Resistant and Susceptible Bell - Pepper (Capsicum annuum) to a Southern California Meloidogyne incognita Population from Commercial Bell-pepper Field." Journal of Nematology
  • Bachie, O.; McGiffen, M. (2013). "Effect of summer cover cropping on weed population density and biomass in a subsequent broccoli crop." IPCBEE (International Proceedings of Chemical, Biological and Environmental Engineering) 57: 31-36.

Non-Peer Reviewed

  • Barman, Apurba; Bachie, Oli (2021). Effective and Safe Desciccants for Alfalfa Seed Production. 24:10, 183-185. November 2021.
  • Burman, Apurba; Bachie, Oli (2021). Viral Disease on Lettuce. The Imperial County Agricultural Briefs. 24:3, 31-35. March 2021.
  • Bachie, Oli; Latck, Brooke (2020). BIOMASS PRODUCTIVITY AND FORAGE QUALITY COMPARISON OF NEW AND EXISTING FORAGE CROPS FOR THE LOW DESERT ENVIRONMENT. The Imperial County Agricultural Briefs. 23:8, 134-139. September 2020.
  • Bachie, Oli; Rethwisch, Michael (2020). POSSIBLE ENVIRONMENTAL EFFECTS ON LOW DESERT ALFALFA. The Imperial County Agricultural Briefs. 23:9, 143-147. October 2020.
  • Riday, H; Bachie, O, et al. (2019). Self-pollination rates in Western U.S. alfalfa seed production fields. .EGF-EUCARPIA Joint Symposium. 1. June 2019.
  • Rethwisch, M. and O. Bachie. (2018). Alfalfa Weevils Active Early in 2018. Imperial County Ag Brief. February 2018. 21 (2). February 2018. PP 28.
  • Bachie, O (2018). Chlorosis of Alfalfa Leaves. Imperial Valley Press. February 1, 2018.
  • Bachie, O (2018). Crop Disorder or Unknown Disease of the Low Desert Sunflower. Imperial County Ag Brief. June 2018. 21 (6). pp 98-102.
  • Montazar, A.; Bache, O., et al. (2018). Enhancing the efficiency of water-use in sugar beet through improved irrigation practices in the Imperial Valley. Future of Water for Irrigation in California and Israel workshop, July 16-18, Davis, CA.
  • Montazar, A.; Bachie, O., et al. (2018). How Much Water do Sugarbeets Need in the Imperial Valley? Imperial County Ag Brief. July 2018. 21 (7). pp 107-110.
  • Bachie, O (2018). Industrial Hemp Could be an Alternate Crop of the Low Desert. Imperial County Ag Brief. July 2018. 21(7). pp 116-118.
  • Bachie, O. and D. Pratap (2018). Iron (Fe) Deficiency can Cause Chlorosis (yellowing) of Alfalfa leaves. Imperial County Ag Brief. 21 (1). January 2018. pp 10-13.
  • Bachie, O. and D. Pratap. (2018). mysterious Symptom on Alfalfa Fields in Brawley, CA. Imperial County Ag Brief. March 2018. 21 (3). pp 43-47.
  • Bachie, O (2018). Plant Growth Regulators May Suppress Durum Wheat Crop Lodging. Imperial County Ag Brief. September 2018. 21(8). pp 128-132.
  • Bachie, O (2018). The Rhodes grass: a potential alternative forage crop for the low desert. The 2018 UCANR Joint Strategic Initiative Conference,October 5-7, 2015. Ontario, CA.
  • Bachie, O (2018). Would Biochar Improve Crop Productivity? County Ag Brief. 21 (2). February 2018. pp 32-34.
  • Bachie, O (2017). A lesson from the progressive farmers of Blythe,California. County Ag Brief. July 2017. pp 11-13.
  • Devkota, P.; Welch-Bezemek M., and O. Bachie. (2017). Associate Vice President for ANR and Vice Provost for UCCE Visit Local Research Facilities. Imperial County Ag Brief. February 2017. pp 2-4.
  • Bachie, O. and D. Pratap (2017). Glyphosate Resistant Horseweed: Awareness and Best Weed Management Practices for Growers. Imperial County Ag Brief. January 2017. pp 11-13.
  • Bachie, O (2017). Integrated Pest Management in Irrigated Desert Alfalfa. County Ag Brief. March 2017. pp 6.
  • Bachie, O (2017). Nematode Pests of Low Desert Klein grass. Imperial County Ag Brief. May 2017. pp 9-12.
  • Bachie, O.; Devkota, P., et al. (2017). Preliminary Results of Imperial Valley Growers Needs Assessment Survey. Imperial County Ag Brief. September 2017. pp 13-16.
  • Bachie, O. (2017). Sorghum Crop for the Low Desert. The Imperial valley Press. September 28, 2017.
  • Abbati, S. and O. Bachie (2017). UCANR and the Secretary of Agricultural Development in Baja Mexico Sign Memorandum of Understanding. Imperial County Ag Brief. February 2017. pp 5-6.
  • Bachie, O. and Pacheco (2016). Nitrate Contents in Cotton Petioles can be Affected by Variety and Cropping Systems. Imperial County Ag Brief. November 2016. pp 11-15.
  • Bachie, O. (2016). Photoperiodism in Onions.o. Bachie. Imperial County Ag Brief. December 2016. pp 6-9.
  • Bachie, O. (2016). survey on the 27th Annual Fall Desert Crops Workshop. Imperial County Ag Brief. Imperial County Ag Brief. December 2016. pp 15.
  • Bachie, O. (2014). Alfalfa production, water consumption and export. Imperial Agricultural Briefs. 2. March 2014.
  • Bachie, O.; Kaffka, S. (2014). Beet Curly Top Virus. Imperial County AgBriefs. 2-6. October 2014.
  • Aguiar, J.; Bachie, O., et al. (2014). Insect Vectors and Viruses Infecting Bell Peppers in the low desert. Imperial Agricultural Briefs. June 2014.
  • Aguiar, J.; Bachie, O., et al. (2014). Insect-Transmitted Virus Diseases in Bell Pepper Fields. Imperial County AgBriefs. 6-13. September 2014.
  • Aguiar, J.; Bachie, O., et al. (2014). Root knot nematodes of bell pepper. Imperial County AgBriefs. 2-6. May 2014.
  • Bachie, O.; Aguiar, J., et al. (2014). Root knot nematodes on bell pepper; a problem in Coachella Valley. Imperial Valley Press. 114:18, 1.
  • Bachie, O.; Jose, L., et al. (2014). Root-Knot Nematode on bell peppers a problem in Coachella Valley. Imperial Valley Press. 114:18.
  • Aguiar, J.; Bachie, O., et al. (2014). "Surprising spring virus in Coachella Valley bell peppers." from http://westernfarmpress.com/vegetables/surprising-spring-virus-wise-coachella-valley-bell-peppers.
  • Bachie, O.; Boutwell, B. (2014). The IR-4 Project and its significance to the low desert farm community. Imperial Agricultural Briefs. July 2014.
  • Bachie, O. (2014). Weed management in organic farms. Imperial Agricultural Briefs. 8-9. February 2014.
  • Bachie, O.; Boutwell, B. (2014). What is the Interregional Research Project No.4? Imperial Valley Press. August 7, 2014.
  • Bachie, O. (2013). Agricultural burn and alternative uses. Imperial Agricultural Briefs. 4. November 2013.
  • Bachie, O. (2013). Alfalfa and Sudangrass acreage and Yield trends for the Imperial Valley. Imperial Agricultural Briefs. 2-3. December 2013.
  • Bachie, O. (2013). Greeting from your new agronomy advisor. Imperial Agricultural Briefs. 2. January 2013.
  • Bachie, O. (2013). Herbicide drift; causes, consequences and how to avoid it. Imperial Agricultural Briefs. 2-3. July 2013.
  • Bachie, O. (2013). Red-winged blackbirds: a major hindrance to grain sorghum production in the low desert. Imperial Agricultural Briefs. 7-9. September 2013.
  • Bachie, O.; Ploeg, A., et al. (2013). "Root-knot Nematode Damage to Low Desert Bell Pepper." HortScience 48(9): S273.
  • Bachie, O. (2013). Summer cover cropping suppresses weeds in a subsequent crop. Imperial Agricultural Briefs. 2-6. April 2013.
  • Ploeg, A.; Bachie, O. (2012). “Heirloom” Tomatoes and Root Knot Nematodes: Host Status and Plant Damage. Society of Nematologists. 51st annual meeting, Savannah, Georgia.
  • Bachie, O. (2011). Interdisciplinary Pest Management Potentials of Cover Cropping Systems. University of California, Riverside. http://www.escholarship.org/uc/item/8kp0v0gr
  • Bachie, O.; McGiffen, M. (2010). "Effect of cropping systems on weed population density and biomass." HortScience 45(8): S111.
  • Bachie, O.; McGiffen, M. (2007). "Growth Response of Onion varieties to Early and Late Planting Practices of High Desert Onion Growers of California." HortScience 42(4): 852.
  • Bachie, O.; McGiffen, M. (2007). "Growth Response of Onion varieties to Early and Late Planting Practices of High Desert Onion Growers of California." HortScience 42(4): 852.

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