Abstract
This volume of the Advances in Agricultural Systems Modeling series presents 14 different case studies of model applications to help make the best use of limited water in agriculture. These examples show that models have tremendous potential and value in enhancing site-specific water management for different soils and climates, and evaluating cropping system sustainability over the longer term, when model results are integrated with the available field measurements in experimental studies. Here we summarize applications of 11 system models commonly reported in the literature for agricultural water management along with those presented in this volume. These 11 models vary greatly in simulating agricultural system components for water balance related processes (the differences in crop growth and N balance processes were even greater among models), which need to be kept in mind when reading about the applications of each model. A sensor-based automated irrigation scheduling system is presented. Finally, we summarize further needs for experimental data and model improvements to enhance future water management applications. Abbreviations: ABA, abscisic acid; AgMIP, Agricultural Model Inter-Comparison and Improvement Project; APEX, Agricultural Policy Environmental eXtender model; APSIM, Agricultural Production Systems Simulator; CGMS, Crop Growth Monitoring System; CSM, cropping system model; CWPF, crop water production function; DSS, decision support system; DSSAT, Decision Support System for Agrotechnology Transfer; EPIC, Environmental Policy-Integrated Climate; ET, evapotranspiration; IRT, infrared thermometer; NCP, North China Plain; PALMS, Precision Agricultural Landscape Modeling System; PSA, plant–soil–atmosphere; RZWQM2, Root Zone Water Quality Model; STICS, Simulateur mulTIdisciplinaire pour les Cultures Standard; SWAP, Soil Water Atmosphere Plant; TSEB, two-source energy balance; WOFOST, WOrld FOod STudies; WUE, water use efficiency. L.R. Ahuja (laj.ahuja@ars.usda.gov), Liwang Ma (Liwang.Ma@ars.usda.gov), S.A. Saseendran (Saseendran. anapalli@ars.usda.gov), USDA-ARS, Agricultural Systems Research Unit, 2150 Centre Ave., Bldg. D, Ste. 200 Fort Collins, CO 80526. *Corresponding author. Q.X. Fang, Agronomy College, Qingdao Agricultural University, Changcheng Rd. 700, Chengyang District, Qingdao, Shandong, China, 266108 (fangqx@igsnrr.ac.cn). Robert J. Lascano, USDA-ARS, Wind Erosion and Water Conservation Research Unit, Cropping Systems Research Laboratory, 3810 4th St., Lubbock, TX 79415 (robert.lascano@ars.usda.gov). David C. Nielsen, USDA-ARS, Central Plains Resources Management Research Unit, 40335 County Rd. GG, Akron, CO, 80720-0400 (david.nielsen@ars.usda.gov). Enli Wang, CSIRO Land and Water, Christian Laboratory, Clunies Ross St., Black Mountain ACT 2601, Australia (Enli.Wang@csiro.au). Paul D. Colaizzi, USDA-ARS, Conservation and Production Research Lab., P.O. Drawer 10, 2300 Experiment Station Rd., Bushland, TX 79012-0010 (Paul.Colaizzi@ars.usda.gov). doi:10.2134/advagricsystmodel5.c15 Published December 5, 2014
Published Version
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