Acta Univ. Agric. Silvic. Mendelianae Brun. 2014, 62(5), 1079-1086 | DOI: 10.11118/actaun201462051079

Analyses of Spring Barley Evapotranspiration Rates Based on Gradient Measurements and Dual Crop Coefficient Model

Gabriela Pozníková1, Milan Fischer1, Eva Pohanková1, Miroslav Trnka2
1 Department of Agrosystems and Bioclimatology, Faculty of Agronomy, Mendel University in Brno, Zemědělská 1, 613 00, Brno, Czech Republic
2 Department of Climate Change Impacts on Agroecosystems, Global Change Research Centre AS CR, v. v. i., Bělidla 986/4a, 603 00, Brno, Czech Republic

The yield of agricultural crops depends on water availability to a great extent. According some projections, the likelihood of stress caused by drought is increasing in future climates expected for the Central Europe. Therefore, in order to manage agro-ecosystems properly, it is necessary to know water demand of particular crops as precisely as possible. Evapotranspiration (ET) is the main part of water balance which takes the water from agro-ecosystems away. The ET consists of evaporation from the soil (E) and transpiration (T) through the stomata of plants. In this study, we investigated ET of spring barley 1-ha field (Domanínek, Czech Republic) measured by Bowen ratio/energy balance method during growing period 2013 (May 8 to July 31). Special focus was dedicated to comparison of barley ET with the reference grass ETo calculated according FAO-56 model, i.e. the determination of barley crop coefficient (Kc). This crop coefficient was subsequently separated into soil evaporation (Ke) and transpiration fraction (Kcb) by adjusting soil and phenological parameters of dual crop coefficient model to minimize the root mean square error between measured and modelled ET. The resulting Kcb of barley was 0.98 during mid-growing period and 0.05 during initial and end periods. According to FAO-56, typical values are 1.10 and 0.15 for Kcb mid and Kcb end, respectively. Modelled and measured ET show satisfactory agreement with root mean square error equal 0.41 mm. Based on the sums of ET and E for the whole growing season of the spring barley, ET partitioning by FAO-56 dual crop coefficient model resulted in E/ET ratio being 0.24.

Keywords: evapotranspiration, dual crop coefficient model, Bowen ratio/energy balance method, transpiration, soil evaporation, spring barley
Grants and funding:

This study was supported by the In-house Grant Agency at FA MENDELU in Brno (IP 10/2013), project InterDrought (No. CZ.1.07/2.3.00/20.0248), and by Czech program KONTAKT II project No. LH12037 "Development of models for assessment of abiotic stresses in selected bioenergy plants".

Published: December 2, 2014  Show citation

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Pozníková, G., Fischer, M., Pohanková, E., & Trnka, M. (2014). Analyses of Spring Barley Evapotranspiration Rates Based on Gradient Measurements and Dual Crop Coefficient Model. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 62(5), 1079-1086. doi: 10.11118/actaun201462051079
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    References

    1. ALLEN, S. J. 1990. Measurement and estimation of evaporation from soil under sparse barley crops in Northern Syria. Agric. For. Meteorol., 49: 291-309. DOI: 10.1016/0168-1923(90)90003-O Go to original source...
    2. ALLEN, R. G. 2003. Crop coefficients. Encyclopaedia of Water Science. DOI: 10.1081/E-EWS 120010037. DOI: 10.1081/E-EWS120010037
    3. ALLEN, R. G., PEREIRA, L. S., RAES, D., SMITH, M. 1998. Crop evapotranspiration. In: Guidelines for Computing Crop Water Requirements. FAO Irrigation and Drainage Paper No. 56, pp. 290.
    4. ALLEN, R. G., PEREIRA, L. S., SMITH, M., RAES, D., WRIGHT, J. L. 2005. FAO-56 dual crop coefficient method for estimating evaporation from soil and application extensions. J. Irrig. Drain. Eng., 13: 2-13. DOI: 10.1061/(ASCE)0733-9437(2005)131:1(2) Go to original source...
    5. ALLEN, R. G., PRUITT, W. O., WRIGHT, J. L., HOWELL, T. A., VENTURA, F., SNYDER, R., ITENFISU, D., STEDUTOH, P., BERENGENA, J., YRISARRY, J. B., SMITH, M., PEREIRA, L. S., RAES, D., PERRIER, A., ALVES, I., WALTER, I., ELLIOTT, R. 2006. A recommendation on standardized surface resistance for hourly calculation of reference ETo by the FAO56 Penman-Monteith method. Agric. Water Manage., 81: 1-22. DOI: 10.1016/j.agwat.2005.03.007 Go to original source...
    6. BALWINDER-SINGH, EBERBACH, P. L., HUMPHREYS, E., KUKAL, S. S. 2011. The effect of rice straw mulch on evapotranspiration, transpiration and soil evaporation of irrigated wheat in Punjab, India. Agric. Water Manage., 98: 1847-1855. DOI: 10.1016/j.agwat.2011.07.002 Go to original source...
    7. BOWEN, I. S. 1926. The ratio of heat losses by conduction and evaporation from any water surface. Phys. Rev., 27: 779-787. DOI: 10.1103/PhysRev.27.779 Go to original source...
    8. DOORENBOS, J. and PRUITT, W. O. 1975. Guidelines for predicting crop water requirements, Irrigation and Drainage Paper No. 24. FAO-ONU, Rome, Italy. 168 pp.
    9. FAN, Z., CHAI, Q., HUANG, G., YU, A., HUANG, P., YANG, C., TAO, Z., LIU, H. 2013. Yield and water consumption characteristics of wheat/maize intercropping with reduced tillage in an Oasis region. Eur. J. Agron., 45: 52-58. DOI: 10.1016/j.eja.2012.10.010 Go to original source...
    10. FISCHER, M. 2012. Water balance of short rotation coppice, Brno: Mendel University in Brno, Faculty of Agronomy, Department of Agrosystems and Bioclimatology. Ph.D. thesis, 261 pp.
    11. GUO, X., ZHANG, H., KANG, L., DU, J., LI, W., ZHU, Y. 2007. Quality control and flux gap filling strategy for Bowen ratio method: revisiting the Priestley-Taylor evaporation model. Environ. Fluid. Mech., 7: 421-437. DOI: 10.1007/s10652-007-9033-8 Go to original source...
    12. HLAVINKA, P., TRNKA, M., SEMERÁDOVÁ, D., DUBROVSKÝ, M., ®ALUD, Z., MO®NÝ, M. 2009. Effect of drought on yield variability of key crops in Czech Republic. Agric. For. Meteorol., 149: 431-442. DOI: 10.1016/j.agrformet.2008.09.004 Go to original source...
    13. KOOL, D., AGAM, N., LAZAROVITCH, N., HEITMAN, J. L., SAUER, T. J., BEN-GAL, A. 2014. A review of approaches for evapotranspiration partioning. Agric. For. Meteorol., 184: 56-70. DOI: 10.1016/j.agrformet.2013.09.003 Go to original source...
    14. LARCHER, W. 2003. Physiological Plant Ecology. 4th edition. Berlin: Springer. Go to original source...
    15. LIU, CH., ZHANG, X., ZHANG, Y. 2002. Determination of daily evaporation and evapotranspiration of winter wheat and maize by large-scale weighing lysimeter and micro-lysimeter. Agric. For. Meteorol., 111: 109-120. DOI: 10.1016/S0168-1923(02)00015-1 Go to original source...
    16. MONTEITH, J., 1965: Evaporation and environment. In: 19th Symposia of the Society for Experimental Biology. Cambridge: University Press, 205-234.
    17. PACO, T. A., FERREIRA, M. I., ROSA, R. D., PAREDES, P., RODRIGUES, G. C., CONCEIC, N. 2012. The dual crop coefficient approach using a density factor to simulate the evapotranspiration of a peach orchard: SIMDualKc model versus eddy covariance measurements. Irrig. Sci., 30: 115-126. DOI: 10.1007/s00271-011-0267-3 Go to original source...
    18. SAVAGE, M. J., EVERSON, C. S., METELERKAMP, B. R. 2009. Bowen ratio evaporation measurement in a remote montane grassland: Data integrity and fluxes. J. Hydrol., 376: 249-260. DOI: 10.1016/j.jhydrol.2009.07.038 Go to original source...
    19. SAVAGE, M. J., 2010: Field evaluation of polymer capacitive humidity sensors for Bowen ratio energy balance flux measurements. Sensor, 10: 7748-7771. DOI: 10.3390/s100807748 Go to original source...
    20. TOLK, J. A., HOWELL, T. A., STEINER, J. L., KRIEG, D. R., SCHNEIDER, A. D. 1995. Role of transpiration suppression by evaporation of intercepted water in improving irrigation efficiency. Irrig. Sci., 16: 89-95. DOI: 10.1007/BF00189165 Go to original source...
    21. TRNKA, M., SCHAUMBERGER, A., FORMAYER, H., EITZINGER, J., HLAVINKA, P., SEMERÁDOVÁ, D., DUBROVSKÝ, M., MO®NÝ, M., THALER, S., ®ALUD, Z. 2011. Evaluating drought risk for permanent grasslands under present and future climate conditions. Procedia Environ. Sci., 3: 50-57. DOI: 10.1016/j.proenv.2011.02.010 Go to original source...
    22. WATSON, D. J. 1947. Comparative Physiological Studies on the Growth of Field Crops: I. Variation in Net Assimilation Rate and Leaf Area between Species and Varieties, and within and between Years. Ann. Bot. 11: 41-76. DOI: 10.1093/oxfordjournals.aob.a083148 Go to original source...

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