Assessing HC27 Soil Database for Modeling Plant Production
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Assessing HC27 Soil Database for Modeling Plant Production Alireza Nehbandani1 · Afshin Soltani1 · Reza Taghdisi Naghab2 · Amir Dadrasi3 · Seyyed Majid Alimagham1 Received: 19 March 2020 / Revised: 6 August 2020 / Accepted: 18 August 2020 © Springer Nature Switzerland AG 2020
Abstract Soil information is a vital input for crop models applications in various large area studies including climate change impact and food security. One of the global soil databases that provide full information for crop models is HC27 of IFPRI. The quality of the database has not been assessed for crop modeling so far. A tested crop simulation model (SSM-iCrop2) was used for this purpose that needs soil water related properties (i.e., depth, albedo, curve number for runoff, drainage coefficient, and soil water limits at saturation, drained upper limit and lower limit) for the simulation of crop properties. Actual data of two soil profiles from three different climate zones (locations) were used as model inputs to simulate potential yield, evapotranspiration (under rainfed conditions) or net irrigation water requirement (under irrigated conditions) of some important plant species (alfalfa, sugar beet, sugar cane, wheat, olive, soybean, apricot and chickpea) under rainfed and irrigated conditions of Iran. Results showed that the application of HC27 soil information in the SSM-iCrop2 model resulted in model output that was not different from the model output with actual soil information with respect to mean, variance, and distribution. No statistically significant difference was found in the simulation of various combinations of soil profiles-plant species-locations. It was concluded that HC27 information can be used in simulation studies with SSM-iCrop2 or other similar simple models for the simulation of potential yield, net irrigation water, or evapotranspiration that are commonly required for food security and climate change studies. Keywords Food security · Model · Potential yield · Irrigation water requirement · Soil information
Introduction Plant simulation models have become an important tool for investigating different agricultural-related scenarios like climate change. Soil information is one of the key input information in most plant simulation models as soil provides an environment for root growth, water storage and uptake and Electronic supplementary material The online version of this article (https://doi.org/10.1007/s42106-020-00114-4) contains supplementary material, which is available to authorized users. * Alireza Nehbandani [email protected] 1
Department of Plant Production, Gorgan University of Agricultural Sciences and Natural Resources, Gorgān, Golestan, Iran
2
Department of Soil Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgān, Golestan, Iran
3
Department of Agronomy, Agriculture College, Vali-e-Asr University of Rafsanjan, Kerman, Iran
nutrient exchange. The use of reliable soil information will minimize the uncertainty of model predictions. For exa
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