Skip Navigation

University of Nebraska–Lincoln

Biological Systems Engineering Department

We Bring Engineering to Life.

Suat Irmak

Suat Irmak

Associate Professor of Biological Systems Engineering
Soil and Water Resources Engineering

Office: 241 L. W. Chase Hall
(402) 472- 4865

email: sirmak2@unl.edu

PUBLICATIONS

Journal Articles
Technical Publications in Proceedings
Extension and Educational Publications

REFEREED JOURNAL ARTICLES

2007 Irmak, S., A. Irmak, T.A. Howell, D.L. Martin, J.O. Payero, and K.S. Copeland. 2007. Variability of alfalfa-reference to grass-reference evapotranspiration ratios in growing and dormant seasons. J. Irrig. and Drain. Eng., ASCE (in press).
  Singh, R.K., A. Irmak, S. Irmak, and D.L. Martin. 2007. Application of SEBAL for mapping evapotranspiration and estimating surface energy fluxes in south central Nebraska. J. Irrig. and Drain. Eng., ASCE (in review).
  Irmak, A., S. Irmak, and D.L. Martin. 2007. Reference and crop evapotranspiration in south central Nebraska: I. Comparison and analysis of grass and alfalfa-reference evapotranspiration methods. J. Irrig. and Drain. Eng., ASCE (in review).
  Irmak, S., and A. Irmak. 2007. Reference and crop evapotranspiration in south central Nebraska: II. Measurement and estimation of corn actual evapotranspiration. J. Irrig. and Drain. Eng., ASCE (in review).
  Payero, J.O., and S. Irmak. 2006. Design, construction, installation, and performance of two large repacked weighing lysimeters for measuring crop evapotranspiration. Irrigation Science (in review).
2006 Irmak, A., J.W. Jones, W.D. Batchelor, S. Irmak, J.O. Paz, K.J. Boote. 2006. Artificial neural network model as a data analysis tool in precision farming. Transactions of the ASABE 49(6):2027-2037. UNL-ARD Journal Series No. 14616.
Payero, J.O., D.D. Tarkalson, and S. Irmak. 2006. Use of Time-Domain Reflectometry (TDR) for continuous monitoring of nitrate in soil and water. Applied Engineering in Agriculture, ASABE 22(5):685-700. UNL-ARD Journal Series No. 15118.
Irmak, A., J.W. Jones, W.D. Batchelor, S. Irmak, J.O. Paz, and K.J. Boote. 2006. Analysis of spatial yield variability using a combined crop model-empirical approach. Transactions of the ASABE 49(3):811-818. UNL-ARD Journal Series No. 14768.
Irmak, S., A. Irmak, J.O. Payero, D.L., Martin, and T.A. Howell. 2006. Sensitivity analyses and sensitivity coefficients of the standardized ASCE-Penman-Monteith equation to climate variables. J Irrig. and Drain. Eng., ASCE 132(6):564-578. UNL-ARD Journal Series No. 14926.
Jia, Xinhua, M.D. Dukes, J.M. Jacobs, and S. Irmak. 2006. Large scale weighing lysimeters for evapotranspiration research in a humid environment. Transactions of the ASABE 49(2):401-412. UNL-ARD Journal Series No. 15156.
Payero, J. O., and S. Irmak. 2006. Variable upper and lower crop water stress index (CWSI) baselines for corn and soybean. Irrigation Science. 25:21-32. UNL-ARD Journal Series No. 15029.
Payero, J.O., S.R. Melvin, S. Irmak, and D. Tarkalson. 2006. Yield response of corn to deficit irrigation in a semi-arid environment. Agricultural Water Management. 84:101-112. UNL-ARD Journal Series No. 14687.
2005 Payero, J.O., S.R. Melvin, and S. Irmak. 2005. Response of soybean to deficit irrigation in a semi-arid region. Transactions of the ASAE. 48(6):2189-2203. UNL-ARD Journal Series No. 14637.
Irmak, S. and A. Irmak. 2005. Performance of Frequency-Domain, Capacitance, and Psuedo-Transit Time-Based Soil Water Content Probes in Four Coarse-Textured Soils. Applied Engineering in Agriculture, ASAE. 21(6):999-1008. UNL-ARD Journal Series No. 14993.
Irmak, S., and R.G. Allen. 2005. Closure on predicting daily net radiation using minimum climatological data. J. Irrig. and Drain. Eng., ASCE 131(4):389-390.
Irmak, S., T.A. Howell, R.G. Allen, J.O. Payero, and D.L. Martin. 2005. Standardized ASCE-Penman-Monteith: Impact of sum-of-hourly vs. 24-hr-timestep computations at reference weather station sites. Transactions of the ASAE 48(3):1063-1077. UNL-ARD Journal Series No. 14850.
Irmak, S., D.Z. Haman, A. Irmak, J.W. Jones, B. Tonkinson, D. Burch, T.H. Yeager, and C. Larsen. 2005. Root-zone temperatures of V. odoratissimum grown in the MPBS and Conventional Systems: Measurement and analyses of temperature profiles and predicting root-zone temperatures. J. Amer. Soc. Hort. Sci. 40(3):808-818. UNL-ARD Journal Series No. 14851.
Irmak, S. 2005. Crop evapotranspiration and crop coefficients of Viburnum Odoratissimum (Ker-gawl). Applied Engineering in Agriculture, ASAE 21(3):1-11. UNL-ARD Journal Series No. 14596.
Irmak, S., M.D. Dukes, and J.M. Jacobs. 2005. Using modified Bellani plate evaporation gauges to estimate short canopy reference evapotranspiration. J. Irrig. and Drain. Eng., ASCE 131(2):164-175. UNL-ARD Journal Series No. 14609.
2004 Irmak, S., A. Irmak, and J.W. Jones. 2004. Predicting multiple layers of bare soil temperatures: A model evaluation and modifications for sandy soils. Soil and Crop Sci. Soc. of Florida, 62:20-29.
  Satti, S.R., J.M. Jacobs, and S. Irmak. 2004. Agricultural water management in a humid region:
sensitivity to climate, soil and crop parameters. Agric. Water Management 70:51-65.
  Irmak, S., D. Z. Haman, A. Irmak, J. W. Jones, K.L. Campbell, and T. L. Crisman. 2004. Measurement and analyses of growth and stress parameters of Viburnum Odoratissimum (Ker-gawl) grown in MPBS. J. Amer. Soc. Hort Sci. 39(6):1445-1455.
2003 Irmak, S. D. Z. Haman, A. Irmak, J. W. Jones, T. H. Yeager, and K. L. Campbell. 2003. New irrigation-plant production system for water conservation in ornamental nurseries: Quantification and evaluation of irrigation, runoff, plant biomass, and irrigation efficiencies. Applied Engineering in Agriculture, ASAE 19(6):651-655.
  Irmak, S., R.G. Allen, and E.B. Whitty. 2003. Daily grass and alfalfa-reference evapotranspiration estimates and alfalfa-to-grass evapotranspiration ratios in Florida. Journal of Irrigation and Drainage Engineering, ASCE 129(5):360-370.
  Irmak, S., A. Irmak, J.W. Jones. T.A. Howell, J.M. Jacobs, R.G. Allen, and G. Hoogenbom. 2003. Predicting daily net radiation using minimum climatological data. Journal of Irrigation and Drainage Engineering, ASCE 129(4):256-269.
  Irmak, S., A. Irmak, R.G. Allen, and J.W. Jones. 2003. Solar and net radiation-based equations to estimate reference evapotranspiration in humid climates. Journal of Irrigation and Drainage Engineering, ASCE 129(5):336-347.
2002 Irmak, S., D.Z. Haman, and J.W. Jones. 2002. Evaluation of Class "A" pan coefficients for estimating reference evapotranspiration in a humid location. Journal of Irrigation and Drainage Engineering, ASCE 128(3):153-159.
  Irmak, A., W.D. Batchelor, J.W. Jones, S. Irmak, J.O. Paz, H. Beck, and M. Engel. 2002. Relationship between plant available soil water and yield for explaining soybean yield variability. Applied Engineering in Agriculture, ASAE, 18(4):471-482.
  Irmak, S., and D.Z. Haman. 2003. Comparison of five methods for estimating Class "A" pan evaporation. HortTechnology 13(3):500-508.
2001 Irmak, S., D.Z. Haman, and T.H. Yeager. 2001. Seasonal irrigation water use efficiency of MPBS. Journal of Environmental Horticulture 19(1):4-10.
  Irmak, S., and D.Z. Haman. 2001. Performance of the Watermark Granular Matrix Sensor in sandy soils. Applied Engineering in Agriculture, ASAE 17(6):787-795.
  Irmak, S., D.Z. Haman, and A. Irmak. 2001. Dew point hygrometers for irrigation scheduling in fine-textured soils. Applied Engineering in Agriculture, ASAE 17(1):17-25.
2000 Irmak, S., D.Z. Haman, and R. Bastug. 2000. Determination of crop water stress index for irrigation timing and yield estimation of corn. Agronomy Journal 92(6):1221-1227.
1995 Bastug, R. and S. Irmak. 1995. Measuring leaf water potential using thermocouple hygrometers and psychrometers. Mediterranean University, Journal of Agriculture (8):383-394. Antalya, Turkey.
Hakgoren, F., A. Irmak, and S. Irmak. 1995. Cooling of greenhouses. Mediterranean University, Journal of Agriculture (8):238-252. Antalya, Turkey.

TECHNICAL PUBLICATIONS IN PROFESSIONAL SOCIETY PROCEEDINGS

2006 Payero, J.O., D. Tarkalson, and S. Irmak. 2006. Yield Response of Corn to Timing of a Limited Seasonal Irrigation Depth (150 mm) with Subsurface Drip Irrigation. Proceedings of the ASCE-EWRI World Environmental and Water Resources Congress. May 21-25, 2006. Qwest Center, Omaha, Nebraska.
Payero, J.O., D. Tarkalson, and S. Irmak. 2006. Corn Yield Response to Different Irrigation Depths with Subsurface Drip Irrigation. Proceedings of the ASCE-EWRI World Environmental and Water Resources Congress. May 21-25, 2006. Qwest Center, Omaha, Nebraska.
2004 Dukes, M.D., S. Irmak, and J.M. Jacobs. 2004. An Automatic System for Recording Evaporation from ET Gages. ASAE Annual International Meeting, Fairmont Chateau Laurier, The Westin, Government Centre Ottawa, Ontario, Canada, 1-4 August 2004, ASAE Paper No. 042191. St. Joseph, MI.
2001 Irmak, S., and D.Z. Haman. 2001. Simplified forms of the FAO56-Penman-Monteith equation for humid climates. ASAE Paper No. 01-2096. Amer. Soc. Agric. Engr., St. Joseph, MI.
2000 Irmak, S., and D.Z. Haman. 2000. Performance of the Watermark Granular Matrix Sensor in sandy soils. ASAE Paper No. 00-2037. Amer. Soc. Agric. Engr., St. Joseph, MI.
1999 Irmak, S., D.Z. Haman, A.G. Smajstrla, and R. Bastug. 1999. Measurement of soil water potential using soil hygrometer for irrigation timing of corn. ASAE Paper No. 99-2236. St. Joseph, MI.
Irmak, S., D.Z. Haman, and A.G. Smajstrla. 1999. Continuous water content measurements with Time?Domain Reflectometry for sandy soils. Soil and Crop Sci. Soc. Fla. Proc. 58:77-81.
Haman, D.Z., T.H. Yeager, and S. Irmak. 1999. Multi?Pot Box System for increased efficiency of irrigation in ornamental plant production. The Irrigation Assoc. Conference, p. 223-228. Orlando, FL
Irmak, A., J.W. Jones, C.D. Stanley, J.W. Hansen, S. Irmak, and K.J. Boote. 1999. Some effects of an antitranspirant (Vapor Gard) on tomato growth and yield. Soil and Crop Sci. Soc. Fla. Proc. 58:118-122.
1998 Haman, D.Z., S. Irmak, T.H. Yeager, R.C. Beeson, Jr., and G.W. Knox. 1998. Multipot Box and Funneled Containers in Container Nursery Production. Proc. Fla. State Hort. Soc. 111:39-41.
Irmak, A., J.W. Jones, J.W. Hansen, S. Irmak, and C.D. Stanley. 1998. The effects of antitranspirant on tomato growth and yield. Annual International Agronomy Meetings, Baltimore, 18-22 Oct. (abstract).
Haman, D.Z., T.H. Yeager, S. Irmak, and C. Larsen. 1998. Container plant production in MPBS. SNA Research Conference, Atlanta, Georgia. Vol. 43, p.113-116.

EXTENSION and EDUCATIONAL PUBLICATIONS

2007 Kranz, W.L., S. Irmak, D. L. Martin, and C.D. Yonts. 2007. Flow control devices for center pivot irrigation systems. University of Nebraska-Lincoln Extension NebGuide G888.
  Kranz, W.L., S. Irmak, D.L. Martin, and C.D. Yonts. 2007. Converting center pivot sprinkler packages. University of Nebraska-Lincoln Extension NebGuide G1124.
2006 Payero, J.O., C. D. Yonts, S. Irmak, and D. Tarkalson. 2006. Subsurface drip irrigation: advantages and disadvantages. University of Nebraska Extension Circular EC776.
Irmak, S., J.O. Payero, D.E. Eisenhauer, W.L. Kranz, D.L. Martin, G.L. Zoubek, J.M. Rees, A.P. Christiansen, and D. Leininger. 2006. Watermark Granular Matrix Sensor for measuring soil matric potential for irrigation management. University of Nebraska-Lincoln Extension Circular EC783.
2005 Irmak, S., J.O. Payero, and D.L. Martin. 2005. Modified Atmometers (ETgage) for irrigation management. University of Nebraska Extension NebGuide, G05-1579. (Adobe Acrobat Reader required.)
2003 Irmak, S., and D.Z. Haman. 2003. Evapotranspiration: reference or potential?. Institute of Food and Agricultural Sciences, IFAS, University of Florida. Extension Publication No: ABE343 (AE256).
2002 Haman, D.Z., Irmak, S., and T.H. Yeager. 2002. A new production system for container plants may decrease the time it takes to grow a plant, as well as use less water. American Nurseryman. October 1, 2002. pp. 54-56.