Version 1
: Received: 12 December 2016 / Approved: 13 December 2016 / Online: 13 December 2016 (09:55:18 CET)
How to cite:
Prado Hernández, J.V.; Pascual Ramírez, F.; Cristóbal Acevedo, D.; Carrillo García, M.; Martínez Ruíz, A. Determination and Evaluation of the Parameters for the Green & AMPT Infiltration Equation in Some Agricultural Soils in Mexico. Preprints2016, 2016120067. https://doi.org/10.20944/preprints201612.0067.v1
Prado Hernández, J.V.; Pascual Ramírez, F.; Cristóbal Acevedo, D.; Carrillo García, M.; Martínez Ruíz, A. Determination and Evaluation of the Parameters for the Green & AMPT Infiltration Equation in Some Agricultural Soils in Mexico. Preprints 2016, 2016120067. https://doi.org/10.20944/preprints201612.0067.v1
Prado Hernández, J.V.; Pascual Ramírez, F.; Cristóbal Acevedo, D.; Carrillo García, M.; Martínez Ruíz, A. Determination and Evaluation of the Parameters for the Green & AMPT Infiltration Equation in Some Agricultural Soils in Mexico. Preprints2016, 2016120067. https://doi.org/10.20944/preprints201612.0067.v1
APA Style
Prado Hernández, J.V., Pascual Ramírez, F., Cristóbal Acevedo, D., Carrillo García, M., & Martínez Ruíz, A. (2016). Determination and Evaluation of the Parameters for the Green & AMPT Infiltration Equation in Some Agricultural Soils in Mexico. Preprints. https://doi.org/10.20944/preprints201612.0067.v1
Chicago/Turabian Style
Prado Hernández, J.V., Mauricio Carrillo García and Antonio Martínez Ruíz. 2016 "Determination and Evaluation of the Parameters for the Green & AMPT Infiltration Equation in Some Agricultural Soils in Mexico" Preprints. https://doi.org/10.20944/preprints201612.0067.v1
Abstract
An adequate representation of the water infiltration process in the soil allows improving the efficiency in application and the uniformity in surface irrigation. The Green and Ampt model has shown a good representation of the process, and researchers from the United States Department of Agriculture (USDA) determined the values of their parameters for soils of that country, which are shown in tables or through functional relationships and this information is used as reference in several parts of the world, although there is no certainty that they are representative of the soils in Mexico. In this study, the parameters of the Green & Ampt equation were determined and evaluated in some soils of agricultural importance in Mexico. The parameters were obtained in four ways: one of them applied a methodology adapted from Brooks and Corey to quantify the wetting front capillary pressure head and used an permeameter under constant hydraulic head to determine the saturated hydraulic conductivity, and the other three consisted in taking them from three studies reported by the USDA. The values of the parameters suggested in Mexico drastically underestimated the results with relative errors (RE) in a range of -49.0 to -94.0% and the most representative were those obtained with the methodology proposed in this research with RE of -15.0 to 6.0%.
Keywords
water in the soil; surface irrigation; water storage; irrigation modelling; soil hydrodynamics
Subject
Environmental and Earth Sciences, Soil Science
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.