Evaluation of the Simulation Model WinISAREG for Soybean on the West Coast of Uruguay
This study was aimed to calibrate and validate the WinIsareg model for soybeans in the west area of Uruguay. This model estimating the crop water requirements under different moisture conditions by simulating a soil water balance (BH). The soilsclimate- crop information was obtained during the 2011 and 2013 seasons. The assessment consisted in searching the cultivation coefficients (Kc) and the no-stress available water depletion factors («p») relative to the initial, mid and end season crop development stages in order to minimize the differences between the observed soil water content values. The best adjusted Kc values were 0.35, 1.18 and 0.75 for initial, mid and end season, respectively. The adjusted “p” value was 0.4 in germination and in R1-R6 phases, while it was 0.6 for the rest of the cycle. The Kc and «p» obtained allowed achieving a high concordance between the simulated and observed values of the water content of the soil for calibration and validation with different situations of water availability. The regression coefficient (b) was very close to 1. The mean absolute error and root mean square error were less than 5 %, the Willmott coefficient and the efficiency (EF) were also close to 1, while the determination coefficient (R2) was higher than 0.8. These results allow to affirm with certainty the proper simulation of WinIsareg model in soybeans in the west area of the country.
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Coeditada entre Facultad de Agronomía - Udelar y el Instituto Nacional de Investigación Agropecuaria (INIA)
2018
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oai:oai.agrocienciauruguay.uy:article-372019-12-19T01:25:43Z Evaluation of the Simulation Model WinISAREG for Soybean on the West Coast of Uruguay Evaluación del modelo de simulación WinIsareg para soja en el litoral oeste del Uruguay Grasso, Joaquín Cadenazzi, Mónica Giménez, Luis irrigation planning Glycine max water management planificación de riego Glycine max manejo del agua This study was aimed to calibrate and validate the WinIsareg model for soybeans in the west area of Uruguay. This model estimating the crop water requirements under different moisture conditions by simulating a soil water balance (BH). The soilsclimate- crop information was obtained during the 2011 and 2013 seasons. The assessment consisted in searching the cultivation coefficients (Kc) and the no-stress available water depletion factors («p») relative to the initial, mid and end season crop development stages in order to minimize the differences between the observed soil water content values. The best adjusted Kc values were 0.35, 1.18 and 0.75 for initial, mid and end season, respectively. The adjusted “p” value was 0.4 in germination and in R1-R6 phases, while it was 0.6 for the rest of the cycle. The Kc and «p» obtained allowed achieving a high concordance between the simulated and observed values of the water content of the soil for calibration and validation with different situations of water availability. The regression coefficient (b) was very close to 1. The mean absolute error and root mean square error were less than 5 %, the Willmott coefficient and the efficiency (EF) were also close to 1, while the determination coefficient (R2) was higher than 0.8. These results allow to affirm with certainty the proper simulation of WinIsareg model in soybeans in the west area of the country. El objetivo del trabajo fue calibrar y validar el modelo WinIsareg para soja en el litoral del Uruguay. El modelo estima las necesidades de agua de los cultivos bajo diferentes condiciones hídricas, mediante la simulación del balance hídrico (BH) de suelos. La información de suelo, cultivo, y clima, utilizada en la evaluación del modelo fue obtenida durante las temporadas 2011 y 2013. La evaluación consistió en ajustar los coeficientes de cultivo (Kc) y los factores de agotamiento de agua disponible sin estrés («p») para las fases de desarrollo (inicial, media y final) de soja, de forma tal de minimizar las diferencias entre los valores observados y simulados del contenido de agua del suelo. El Kc inicial ajustado fue 0,35, el Kc medio 1,18 y el Kc final 0,75. Los «p» ajustados fueron de 0,4 para las fases germinación y R1-R6 y de 0,6 para el resto del ciclo. Los Kc y «p» obtenidos permitieron lograr una elevada concordancia entre los valores simulados y observados del contenido hídrico del suelo para la calibración y la validación con diferentes situaciones de disponibilidad hídrica. El coeficiente de regresión (b) entre valores observados y simulados fue cercano a 1, las estimaciones del error absoluto (AAE) y raíz cuadrada media del error (RCME) fueron menores a 5 %, el coeficiente de Willmott «d» y la eficiencia (EF) cercanos a 1 y el coeficiente de determinación (R2) mayor a 0,8. El resultado de los indicadores estadísticos permite afirmar con certeza el buen funcionamiento del modelo WinIsareg en soja para el litoral del país. Coeditada entre Facultad de Agronomía - Udelar y el Instituto Nacional de Investigación Agropecuaria (INIA) 2018-12-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://agrocienciauruguay.uy/index.php/agrociencia/article/view/37 10.31285/AGRO.22.1.10 Agrociencia Uruguay; Vol. 22 No. 1 (2018); 98-106 Agrociencia Uruguay; Vol. 22 Núm. 1 (2018); 98-106 Agrociencia Uruguay; v. 22 n. 1 (2018); 98-106 2730-5066 spa https://agrocienciauruguay.uy/index.php/agrociencia/article/view/37/23 Copyright (c) 2018 Agrociencia Uruguay |
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| author |
Grasso, Joaquín Cadenazzi, Mónica Giménez, Luis |
| spellingShingle |
Grasso, Joaquín Cadenazzi, Mónica Giménez, Luis Evaluation of the Simulation Model WinISAREG for Soybean on the West Coast of Uruguay |
| author_facet |
Grasso, Joaquín Cadenazzi, Mónica Giménez, Luis |
| author_sort |
Grasso, Joaquín |
| title |
Evaluation of the Simulation Model WinISAREG for Soybean on the West Coast of Uruguay |
| title_short |
Evaluation of the Simulation Model WinISAREG for Soybean on the West Coast of Uruguay |
| title_full |
Evaluation of the Simulation Model WinISAREG for Soybean on the West Coast of Uruguay |
| title_fullStr |
Evaluation of the Simulation Model WinISAREG for Soybean on the West Coast of Uruguay |
| title_full_unstemmed |
Evaluation of the Simulation Model WinISAREG for Soybean on the West Coast of Uruguay |
| title_sort |
evaluation of the simulation model winisareg for soybean on the west coast of uruguay |
| description |
This study was aimed to calibrate and validate the WinIsareg model for soybeans in the west area of Uruguay. This model estimating the crop water requirements under different moisture conditions by simulating a soil water balance (BH). The soilsclimate- crop information was obtained during the 2011 and 2013 seasons. The assessment consisted in searching the cultivation coefficients (Kc) and the no-stress available water depletion factors («p») relative to the initial, mid and end season crop development stages in order to minimize the differences between the observed soil water content values. The best adjusted Kc values were 0.35, 1.18 and 0.75 for initial, mid and end season, respectively. The adjusted “p” value was 0.4 in germination and in R1-R6 phases, while it was 0.6 for the rest of the cycle. The Kc and «p» obtained allowed achieving a high concordance between the simulated and observed values of the water content of the soil for calibration and validation with different situations of water availability. The regression coefficient (b) was very close to 1. The mean absolute error and root mean square error were less than 5 %, the Willmott coefficient and the efficiency (EF) were also close to 1, while the determination coefficient (R2) was higher than 0.8. These results allow to affirm with certainty the proper simulation of WinIsareg model in soybeans in the west area of the country. |
| publisher |
Coeditada entre Facultad de Agronomía - Udelar y el Instituto Nacional de Investigación Agropecuaria (INIA) |
| publishDate |
2018 |
| url |
https://agrocienciauruguay.uy/index.php/agrociencia/article/view/37 |
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