Estimating Evaporation from Bare Soil and the Crop Coefficient for the Initial Period Using Common Soils Information
Publication: Journal of Irrigation and Drainage Engineering
Volume 131, Issue 1
Abstract
The crop coefficient during the initial period varies with wetting frequency, evaporative demand, and water-holding capacity of the upper soil layer. It is possible to develop a semitheoretical integrated function to predict the average representing the initial period of a growing season when the soil is mostly bare and that incorporates these three factors. The function is based on a two-stage evaporation function as used in the Food and Agriculture Organization Irrigation and Drainage Paper No. 56 (FAO-56) dual crop coefficient method. Parameters in the integrated equation are soil based and can be calculated a priori without field measurements. The procedure can be used to produce graphical figures similar to that introduced in FAO-24 for . Similar to FAO-24, the function utilizes the mean time between wetting events and reference evapotranspiration. In this paper, the development of the procedure and figures for are described. Comparisons with measured evaporation and in southern California indicate relatively good performance by the function without calibration.
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References
Allen, R. G. (1995). “Mean crop coefficient during the initial period, .” Departmental Research Rep., Dept. Biological and Irrigation Engineering, Utah State Univ., Logan, Utah.
Allen, R. G., Pereira, L. S., Raes, D., and Smith, M. (1998). “Crop evapotranspiration: Guidelines for computing crop water requirements.” FAO Irrigation and Drainage Paper No. 56, Rome.
Allen, R. G., Pereira, L. S., Smith, M., Raes, D., and Wright, J. L. (2005). “FAO-56 dual crop coefficient procedure for predicting evaporation from soil and application extensions.” J. Irrig. Drain. Eng., 131(1), XXX–XXX.
Bonachela, S., Orgaz, F. O., Villalobos, F. J., and Fereres, E. (2001). “Soil evaporation from drip-irrigated olive orchards.” Irrig. Sci., 20, 65–71.
Doorenbos, J., and Pruitt, W. O. (1977). “Crop water requirements.” Irrigation and Drainage Paper No. 24 (revised), FAO, Rome.
Hanks, R. J., and Hill, R. W. (1980). Modeling crop response to irrigation in relation to soils, climate and salinity, International Irrigation Information Center, No. 6, Pergamon Press, Elmsford, N.Y.
Jensen, M. E., Burman, R. D., and Allen, R. G. (1990). “Evapotranspiration and irrigation water requirements.” ASCE Manual and Reports No. 70, ASCE, New York.
Kanemasu, E. T., Stone, L. R., and Powers, W. L. (1976). “Evapotranspiration model tested for soybean and sorghum.” Agron. J., 68, 569–572.
Mutziger, A. J., Burt, C. M., Howes, D. J., and Allen, R. G. (2005). “Comparison of measured and FAO-56 modeled evaporation from bare soil.” J. Irrig. Drain. Eng., 131(1), XXX–XXX.
Parlange, M. B., Katul, G. G., Cuenca, R. H., Kavvas, M. L., Nielsen, D. R., and Mata, M. (1992). “Physical basis for a time series model of soil water content.” Water Resour. Res., 28, 2437–2446.
Philip, J. R. (1957). “Evaporation and moisture and heat fields in the soil.” J. Meteorol., 14, 354–366.
Ritchie, J. T. (1972). “Model for predicting evaporation from a row crop with incomplete cover.” Water Resour. Res., 8, 1204–1213.
Ritchie, J. T. (1974). “Evaluating irrigation needs for southeastern U.S.A.” Proc., Irrig. and Drainage Speciality Conf., ASCE, New York, 262–273.
Ritchie, J. T., Godwin, D. C., and Singh, U. (1989). “Soil and weather inputs for the IBSNAT crop models.” Proc., IBSNAT Symp.: Decision Support System for Agrotechnology Transfer: Part I., IBSNAT, Dept. Agronomy and Soil Science, College of Tropical Agriculture and Human Resources, Univ. of Hawaii, Honolulu, 31–45.
Ritchie, J. T., and Johnson, B. S. (1990). “Soil and plant factors affecting evaporation.” Irrigation of agricultural crops, B. A. Stewart and D. R. Nielsen, eds., Chap. 13, Ser. 30, American Society of Agronomy, Madison, Wis., 363–390.
Rodrigues, P. N., Pereira, L. S., and Machado, T. G. (2000). “KCISA, a program to compute averaged crop coefficients: Application to field grown horticultural crops.” Proc., 3rd Int. Symp. on Irrigation of Horticultural Crops, M. I. Ferreira and H. G. Jones, eds., ISHS, Leuven, Belgium, 535–542.
Saxton, K. E., Johnson, H. P., and Shaw, R. H. (1974). “Modeling evapotranspiration and soil moisture.” Trans. ASAE, 17(4), 673–677.
Snyder, R. L., Bali, K., Ventura, F., and Gomez-MacPherson, H. (2000). “Estimating evaporation from bare or nearly bare soil.” J. Irrig. Drain. Eng., 126(6), 399–403.
Tanner, C. B. (1960). “Energy balance approach to evapotranspiration from crops.” Soil Sci. Soc. Am. Proc., 24, 1–9.
United States Department of Agriculture (USDA). (1993). Soil survey manual, U.S. Government Printing Office, Washington, D.C.
United States Department of Agriculture–Soil Conservation Service (USDA–SCS). (1981). “Soil survey of Imperial County, California, Imperial Valley Area.” Washington, D.C.
Wright, J. L. (1982). “New evapotranspiration crop coefficients.” J. Irrig. Drain. Div., 108(1), 57–74.
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© 2005 ASCE.
History
Received: Feb 27, 2003
Accepted: Jun 27, 2003
Published online: Feb 1, 2005
Published in print: Feb 2005
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