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Dr. Peter Ako Larbi

Assistant Cooperative Extension Specialist
Kearney Agricultural Research & Extension Center
9240 S. Riverbend Ave.
Parlier, CA 93648
palarbi@ucanr.edu Create VCard

Also in:
Biological & Agricultural Engineering



Dr. Peter Ako Larbi is an Assistant Cooperative Extension Specialist in Agricultural Application Engineering with the University of California Agriculture and Natural Resources (UC ANR; 2018-present) and an affiliated faculty member of the Department of Biological and Agricultural Engineering at UC-Davis (2019-present). He is the principal investigator and director of the Agricultural Application Engineering Program headquartered at the Kearney Agricultural Research and Extension Center. He provides regional leadership in agricultural engineering extension and applied research with a focus on spray application engineering. Dr. Larbi’s research focuses on developing, evaluating, and deploying spray application technologies, techniques, and decision support systems, aimed at improving agricultural productivity while reducing the impact of pesticides and other agricultural chemicals on the environment. His extension efforts seek to promote best practices for safe, economical, and environmentally sound pesticide spray application. His other research interests include precision agriculture, machinery systems, remote sensing, and sensor technology. He has to his credit several publications and presentations, and a U.S. patent.

Prior to joining UC, Dr. Larbi was an Assistant Professor of Agricultural Systems Technology at Arkansas State University with a joint appointment in the Division of Agriculture at University of Arkansas (2014-2018). He also held postdoctoral researcher positions at the Washington State University Center for Precision and Automated Agricultural Systems (2012-2014) and the University of Florida Citrus Research and Education Center (2011-2012). Dr. Larbi earned his Ph.D. in agricultural and biological engineering from the University of Florida, and a M.Sc. and a B.Sc. in agricultural engineering from the Kwame Nkrumah University of Science and Technology in Kumasi, Ghana.


Ph.D. Agricultural and Biological Engineering, University of Florida. 2011
M.Sc. Agricultural Engineering, Kwame Nkrumah University of Science and Technology. 2007
B.Sc. Agricultural Engineering, Kwame Nkrumah University of Science and Technology. 2003


  • IPM Achievement Award
    Presented by California Department Pesticide Regulation,  2020
  • Outstanding Graduate Faculty Mentor Award
    Presented by Graduate Student Council, Arkansas State University,  2018
  • Professor of the Month for February 2017
    Presented by Arkansas State University,  2017
  • Young Engineer of the Year Award
    Presented by American Society of Agricultural and Biological Engineers, Arkansas Section,  2017
  • Mondialogo Engineering Award
    Presented by United Nations Education Science and Cultural Organization, in partnership with DaimlerChrysler,  2005
  • Special Jury Recognition Award
    Presented by United Nations Education Science and Cultural Organization, in partnership with DaimlerChrysler,  2005


Biological and Agricultural Engineering


Agricultural Application Engineering/Spray Application Engineering

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


Peer Reviewed

  • Larbi, P. A. (In Press). Chapter 14: Spray Application Principles and Techniques for Olives. In: Olive Oil Production Manual. UC ANR Publication. University of California.
  • Larbi, P. A.; Douhan, G. W. (In Press). Stakeholder-Targeted Dissemination and Evaluation of Agricultural DSSs: A Case Study of CitrusSprayEx for Improving Decision Support Utility and Adoption for Air-Assisted Spray Applications. Agricultural Systems. (in review).
  • Larbi, Peter A. (2022). Configuration and Assessment of a Submersible Fluorometer for Evaluating Fluorescent Dye Deposition. Journal of Testing and Evaluation. 50:3.
  • Vong, C. N.; Larbi, P. A. (2021). Development and prototype testing of an agricultural nozzle clog detection device. Transactions of the ASABE. 64:1, 49-61.
  • Pourreza, Alireza; Moghimi, Ali; Niederholzer, Franz J.A.; Larbi, Peter A.; Zuniga-Ramirez, German; Cheung, Kyle H.; Khorsandi, Farzaneh (2020). Spray Backstop: A Method to Reduce Orchard Spray Drift Without Limiting the Spray and Air Delivery. Sustainability 2020. 12:8862.
  • Larbi, P. A.; Larbi, D. A. (2018). Adopting Microsoft Excel for Biomedical Signal and Image Processing. Computer Methods and Programs in Biomedical Signal and Image Processing.L. Wang. Book Chapter. https://www.intechopen.com/online-first/adopting-microsoft-excel-for-biomedical-signal-and-image-processing
  • Larbi, P. A. (2018). Advancing Microsoft Excel's potential for teaching digital image processing and analysis. Applied Engineering in Agriculture. 34:2, 263-276.
  • Larbi, P. A.; Green, S. (2018). Time series analysis of soybean response to varying atmospheric conditions for precision agriculture. Precision Agriculture. 2018, pp 1-14.
  • Zhou, J.; He, L.; Whiting, M.; Amatya, S.; Larbi, P. A.; Karkee, M.; Zhang, Q. (2016). Field evaluation of a mechanical-assist cherry harvesting system. Engineering in Agriculture, Environment and Food. 9:4, 324–331.
  • Larbi, P. A. (2016). RGBExcel: An RGB image data extractor and exporter for excel processing. Signal and Image Processing: An International Journal. 7:1, 1-9.
  • Larbi, P. A.; Vong, C. N., Karkee, M. (2015). A study of operator performance for a mechanical sweet cherry harvester: Comparison between manual and remote-controlled operation. Journal of Agricultural Safety and Health. 21:3, 145-157.

  • Larbi, P. A. (2015). Modification and field evaluation of an experimental sweet cherry harvester. Applied Engineering in Agriculture. 31:3, 387-397.
  • Larbi, P. A.; Karkee, M. (2014). Effects of orchard characteristics and operator performance on harvesting rate of a mechanical sweet cherry harvester. GSTF Journal on Agricultural Engineering. 1:1, 11.
  • Larbi, P. A.; Salyani, M. (2013). Discretization for a spray deposition model: Criteria for temporal and spatial differencing. Computers and Electronics in Agriculture. 97, 35-39.
  • Larbi, P. A.; Ehsani, R.; Salyani, M.; Maja, J. M.; Mishra, A. R.; Camargo Neto, J. (2013). Multispectral based leaf detection system for spot sprayer application to control citrus psyllids. Biosystems Engineering. 116:4, 509-517.
  • Khot, L. R.; Ehsani, R.; Albrigo, G.; Larbi, P. A.; Landers, A.; Campoy, J.; Wellington, C. (2012). Air-assisted sprayer adapted for precision horticulture: Spray patterns and deposition assessments in small-sized citrus canopies. Biosystems Engineering. 113:1, 76-85.
  • Larbi, P. A.; Salyani, M. (2012). CitrusSprayEx: An expert system for planning citrus spray applications. Computers and Electronics in Agriculture. 87, 85-93.
  • Larbi, P. A.; Salyani, M. (2012). Model to predict spray deposition in citrus airblast sprayer applications - Part 1: Spray Dispersion. Transactions of the ASABE. 55:1, 29-39.
  • Larbi, P. A.; Salyani, M. (2012). Model to predict spray deposition in citrus airblast sprayer applications - Part 2: Spray deposition. Transactions of the ASABE. 55:1, 41-48.
  • Khot, L. R.; Ehsani, R.; Landers, J.; Albgrigo, G.; Larbi, P. A. (2012). Spray pattern investigation of an axial-fan airblast precision sprayer using a modified vertical patternator. Applied Engineering in Agriculture. 28:5, 647-654.
  • Khot, L. R.; Salyani, M.; Farooq, M.; Walker, T. W.; Sweeb, R. D.; Smith, V.; Pomolis, R.; Stoops, C.A.; Larbi, P. A. (2011). Assessment of aerosol deposition and movement in open field conditions. Agricultural Engineering International: CIGR Journal. 13:3.

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