Ali Tahseen Mohammed

Assistant Professor, Agronomy, Organic Cropping Systems
Assistant Specialist, Agronomy, Organic Cropping Systems
Member of the Graduate Faculty
Assistant Professor, BIO5 Institute

Contact

(520) 621-1977
Forbes, Rm. 303
Tucson, AZ 85721
alim3@arizona.edu

Biography

Dr. Ali Mohammed is an Assistant Professor and Extension Specialist in the School of Plant Sciences at the University of Arizona, based at the Yuma Agricultural Center. His work focuses on advancing sustainable organic agricultural practices in arid desert regions and holds statewide responsibility for Extension and research programs.

Dr. Mohammed earned his Master of Science in Mechanized Systems Management and his Ph.D. in Agricultural and Biological Systems Engineering from the University of Nebraska-Lincoln. His research focused on evaluating irrigation and nitrogen management strategies across center pivot, subsurface drip, and furrow irrigation systems, with an emphasis on maize evapotranspiration, crop water productivity, soil-water dynamics, and physiological responses such as stomatal resistance. This work contributed to advancements in precision agriculture and limited irrigation management.

He gained expertise in the strategic implementation of cutting-edge technologies designed to enhance smart-precision irrigation and nitrogen management. These include the adept utilization of wireless sensor networks, AI-driven CropCAM imaging sensors, Eddy Covariance, and the Bowen Ratio Energy Balance System. These systems play a crucial role in measuring greenhouse gas fluxes between ecosystems and the atmosphere, aiding in the understanding of carbon and water cycles.

Degrees

Ph.D. Biological Engineering/Agricultural Engineering

University of Nebraska-Lincoln, Lincoln, Nebraska, United States
Maize growth, yield, water productivity, and evapotranspiration response to different irrigation methods and amounts and different timing and methods of nitrogen applications.

M.S. Mechanized Systems Management

University of Nebraska-Lincoln, Lincoln, Nebraska, United States
Yield and crop water use efficiency response of drought-tolerant and conventional maize hybrids under different irrigation regimes, plant populations and climate gradients.

B.S. Agricultural Mechanization

University of Mosul, Mosul, Iraq

Work Experience

University of Arizona/Yuma Ag Center (2024 - Ongoing)
Daugherty Water for Food Global Institute-Biological Systems Eng. University of Nebraska-Lincoln (2023 - 2024)
Biological Systems Eng. University of Nebraska-Lincoln (2020 - 2023)
Biological Systems Eng. University of Nebraska-Lincoln (2015 - 2020)
Biological Systems Eng. University of Nebraska-Lincoln (2014 - 2015)
Biological Systems Eng. University of Nebraska-Lincoln (2011 - 2013)

Interests

Teaching

Dr. Mohammed teaches ASM 404 – Irrigation Principles and Management to junior and senior Agricultural Systems Management students at the University of Arizona’s distance campus in Yuma. This course covers fundamental and advanced concepts of irrigation systems, with a focus on efficient water management strategies for arid and semi-arid agricultural regions. Students gain hands-on experience with irrigation scheduling, system design, and technology-driven water conservation practices. The course also integrates real-world applications, including the use of soil moisture sensors, remote sensing tools, and data-driven decision-making to optimize water use efficiency in modern agricultural systems.

Research

Dr. Mohammed's research interest is in comparing different specialty and row crop systems, both organic and conventional cropping systems, in the lower deserts of the Southwest USA. His research and Extension programs focus on coupled irrigation and nutrition management, soil amendments, and improving soil physical properties. Recognizing the unique challenges of farming in arid regions, his work integrates innovative sensor technologies to enhance water and nutrient resource efficiency and sustainability.

Courses

No activities entered.

Scholarly Contributions

Journals/Publications

Heeren, D. M., Mohammed, A. T., Wilkening, E., Neale, C. M., Boldt, A. L., Chandra, A., Amori, P. N., Goncalves, I. Z., Shi, Y., & Balboa, G. R. (2024). Field Research Report: Results from the ENREEC VRI Field for the 2021, 2022, and 2023 Crop Seasons.
Irmak, S., & Mohammed, A. T. (2024). Maize Nitrogen (N) Partial Factor Productivity, N Uptake and Utilization Efficiency, N vs. Yield and N vs. Evapotranspiration Relationships Response Under Center Pivot, Subsurface Drip and Surface (Furrow) Irrigation. N Uptake and Utilization Efficiency, N vs. Yield and N vs. Evapotranspiration Relationships Response Under Center Pivot, Subsurface Drip and Surface (Furrow) Irrigation.
Irmak, S., & Mohammed, A. T. (2024). Maize Nitrogen (N) Uptake, Grain N Concentration and Root-Zone Residual Nitrate N (No3-N) Response Under Center Pivot, Subsurface Drip and Surface (Furrow) Irrigation. Subsurface Drip and Surface (Furrow) Irrigation.
Djaman, K., Mohammed, A. T., & Koudahe, K. (2023). Accuracy of estimated crop evapotranspiration using locally developed crop coefficients against satellite-derived crop evapotranspiration in a semiarid climate. Agronomy, 13(7), 1937.
Irmak, S., & Mohammed, A. T. (2023). Maize nitrogen uptake and use efficiency, partial factor productivity of nitrogen, and yield response to different nitrogen and water applications under three irrigation methods. Irrigation and Drainage, 1--25.
Irmak, S., Mohammed, A. T., & Drudik, M. (2023). Maize nitrogen uptake, grain nitrogen concentration and root-zone residual nitrate nitrogen response under center pivot, subsurface drip and surface (furrow) irrigation. Agricultural Water Management, 287, 108421.
Djaman, K., Koudahe, K., & Mohammed, A. T. (2022). Dynamics of crop evapotranspiration of four major crops on a large commercial farm: Case of the navajo agricultural products industry, New Mexico, USA. Agronomy, 12(11), 2629.
Irmak, S., Mohammed, A. T., & Kukal, M. S. (2022). Maize response to coupled irrigation and nitrogen fertilization under center pivot, subsurface drip and surface (furrow) irrigation: Growth, development and productivity. Agricultural Water Management, 263, 107457.
Mohammed, A. T., & Irmak, S. (2022). Maize response to coupled irrigation and nitrogen fertilization under center pivot, subsurface drip and surface (furrow) irrigation: Soil-water dynamics and crop evapotranspiration. Agricultural Water Management, 267, 107634.
Mohammed, A. T., & Irmak, S. (2022). Maize response to irrigation and nitrogen under center pivot, subsurface drip and furrow irrigation: Water productivity, basal evapotranspiration and yield response factors. Agricultural Water Management, 271, 107795.
Irmak, S., Mohammed, A. T., Kranz, W., Yonts, C. D., & Donk, S. (2020). Irrigation-Yield Production Functions and Irrigation Water Use Efficiency Response of Drought-Tolerant and Non-Drought-Tolerant Maize Hybrids under Different Irrigation Levels, Population Densities, and Environments. Sustainability, 12(1), 358.
Irmak, S., Kukal, M. S., Mohammed, A. T., & Djaman, K. (2019). Disk-till vs. no-till maize evapotranspiration, microclimate, grain yield, production functions and water productivity. Agricultural water management, 216, 177--195.
Irmak, S., Mohammed, A. T., & Kranz, W. L. (2019). Grain Yield, Crop and Basal Evapotranspiration, Production Functions, and Water Productivity Response of Drought-tolerant and Non-drought-tolerant Maize Hybrids under Different Irrigation Levels, Population Densities, and Environments: Part II. In South-c. Applied engineering in agriculture, 35(1), 83--102.
Mohammed, A. T., Irmak, S., Kranz, W. L., Van, D. S., & Yonts, C. D. (2019). Grain Yield, Crop and Basal Evapotranspiration, Production Functions and Water Productivity Response of Drought-Tolerant and Non-Drought-Tolerant Maize Hybrids under Different Irrigation Levels, and Population Densities: Part I. In Western Nebraska’s.
Barker, J. B., Heeren, D. M., Koehler-Cole, K., Shapiro, C. A., Blanco-Canqui, H., Elmore, R. W., Proctor, C. A., Irmak, S., Francis, C. A., Shaver, T. M., & others, . (2018). Cover crops have negligible impact on soil water in Nebraska maize--soybean rotation. Agronomy Journal, 110(5), 1718--1730.
Irmak, S., Sharma, V., Mohammed, A. T., & Djaman, K. (2018). Impacts of cover crops on soil physical properties: Field capacity, permanent wilting point, soil-water holding capacity, bulk density, hydraulic conductivity, and infiltration. Transactions of the ASABE, 61(4), 1307--1321.

Proceedings Publications

Heeren, D. M., Hayde, L. G., Eisenhauer, D. E., McCornick, P. G., Mohammed, A. T., Mittelstet, A. R., Boldt, A. L., Qiao, X., Mabie, D. M., & Munoz-Arriola, F. (2023). A Graduate-Level Field Course in Irrigation and Agricultural Water Management for an Immersive Learning Experience. In 2023 ASABE Annual International Meeting.
Mohammed, A. T., & Irmak, S. (2023). Coupled impacts of irrigation amounts and nitrogen fertilization timing on maize yield response factors under different irrigation methods in Nebraska. In 2023 ASABE Annual International Meeting/Omaha, NE.
Mohammed, A. T., & Irmak, S. (2022). Combined effects of Full and Limited Irrigation, Nitrogen Fertilization Timing on Maize Grain Yield and Evapotranspiration Under Different Irrigation Methods. In 2022 ASABE Annual International Meeting/Houston, TX.
Mohammed, A. T., Irmak, S., & Kranz, W. (2017). Maize yield response to different irrigation methods, regimes, and various timing of nitrogen applications. In 2017 ASABE Annual International Meeting/Spokane, WA.
Mohammed, A. T., Irmak, S., & Kranz, W. (2016). Yield and crop water use efficiency response of drought-tolerant and conventional maize hybrids under different irrigation regimes and climate gradients. In Central Plains Irrigation Conference/Kearney, NE.
Mohammed, A. T., Irmak, S., Kranz, W., Yonts, C., & Donk, v. S. (2016). Yield and crop water use efficiency response of drought-tolerant and conventional maize hybrids under different irrigation regimes and climate gradients. In 2016 ASABE Annual International Meeting/Orlando, FL.
Mohammed, A. T., Irmak, S., Kranz, W., Yonts, C., & S, . (2015). Response of drought-tolerant and conventional maize hybrids to different irrigation management strategies. In North Central Region Water Management Network Capacity Building Training Workshop/Lincoln, NE..

Others

Mohammed, A. T., Heeren, D., & Wilkening, E. (2023). Irrigation scheduling application to conserve water resources.
Mohammed, A. T. (2020). Maize growth, yield, water productivity and evapotranspiration response to different irrigation methods and amounts and different timing and methods of nitrogen applications.
Mohammed, A. T. (2013). Yield and crop water use efficiency response of drought-tolerant and conventional maize hybrids under different irrigation regimes, plant populations and climate gradients.

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