Yield gap assessment for late corn with diffferent seeding densities in the central region of Córdoba, Argentina
The yield gap (BR) in late corn (December) was evaluated in the central region of Córdoba, Argentina, comparing planting densities (DS) of 6 and 8 pl m-2 using the AquaCrop model. Running the model between 1960 and 2017 required analyzing the consistency of the Penman-Monteith method (PM) to estima...
| Main Authors: | , , , , , |
|---|---|
| Format: | Online |
| Language: | spa |
| Published: |
Facultad de Ciencias Agropecuarias
2019
|
| Subjects: | |
| Online Access: | https://revistas.unc.edu.ar/index.php/agris/article/view/23613 |
| _version_ | 1837213955497394176 |
|---|---|
| author | de la Casa, Antonio Ovando, Gustavo Bressanini, Luciano Díaz, Guillermo Díaz, Pablo Miranda, Cristian |
| author_facet | de la Casa, Antonio Ovando, Gustavo Bressanini, Luciano Díaz, Guillermo Díaz, Pablo Miranda, Cristian |
| author_sort | de la Casa, Antonio |
| collection | Portal de Revistas |
| description | The yield gap (BR) in late corn (December) was evaluated in the central region of Córdoba, Argentina, comparing planting densities (DS) of 6 and 8 pl m-2 using the AquaCrop model. Running the model between 1960 and 2017 required analyzing the consistency of the Penman-Monteith method (PM) to estimate the daily rate of reference evapotranspiration (ETo) using only maximum and minimum temperature records (ETo_PMTxTn), instead of the complete set of 4 fundamental variables. The ETo_PMTxTn values explain approximately 80 % of the variability of those obtained with the complete set of variables. AquaCrop was calibrated by using crop coverage samples, aerial biomass and soil water that were collected in a plot of late corn during the crop season 2015-2016. Three sowing dates were evaluated, 3 fixed and 3 variables, with no significant differences in BR for both DS. A small advance or delay in planting does not represent a decision affecting climate risk condition. While the increase of DS to 8 pl m-2 produced a significant increase in BR, it also presented average effective yields (RR) that are higher than those obtained with 6 pl m-2 for 47 of the 57 crop cycles analyzed. |
| format | Online |
| id | oai:ojs.revistas.unc.edu.ar:article-23613 |
| institution | Universidad Nacional de Cordoba |
| language | spa |
| publishDate | 2019 |
| publisher | Facultad de Ciencias Agropecuarias |
| record_format | ojs |
| spelling | oai:ojs.revistas.unc.edu.ar:article-236132020-03-30T18:01:07Z Yield gap assessment for late corn with diffferent seeding densities in the central region of Córdoba, Argentina Evaluación de la brecha de rendimiento para maíz tardío con distintas densidades de siembra en la región central de Córdoba, Argentina de la Casa, Antonio Ovando, Gustavo Bressanini, Luciano Díaz, Guillermo Díaz, Pablo Miranda, Cristian AquaCrop crop coverage potential yield risk AquaCrop cobertura de cultivo rendimiento potencial riesgo The yield gap (BR) in late corn (December) was evaluated in the central region of Córdoba, Argentina, comparing planting densities (DS) of 6 and 8 pl m-2 using the AquaCrop model. Running the model between 1960 and 2017 required analyzing the consistency of the Penman-Monteith method (PM) to estimate the daily rate of reference evapotranspiration (ETo) using only maximum and minimum temperature records (ETo_PMTxTn), instead of the complete set of 4 fundamental variables. The ETo_PMTxTn values explain approximately 80 % of the variability of those obtained with the complete set of variables. AquaCrop was calibrated by using crop coverage samples, aerial biomass and soil water that were collected in a plot of late corn during the crop season 2015-2016. Three sowing dates were evaluated, 3 fixed and 3 variables, with no significant differences in BR for both DS. A small advance or delay in planting does not represent a decision affecting climate risk condition. While the increase of DS to 8 pl m-2 produced a significant increase in BR, it also presented average effective yields (RR) that are higher than those obtained with 6 pl m-2 for 47 of the 57 crop cycles analyzed. A partir del modelo AquaCrop se evaluó la brecha de rendimiento (BR) en maíz de siembra tardía en región central de Córdoba, Argentina, comparando densidades de siembra (DS) de 6 y 8 pl m-2. La ejecución del modelo entre 1960 y 2017 demandó analizar la consistencia del método de Penman-Monteith (PM) para estimar la tasa diaria de evapotranspiración de referencia (ETo) utilizando sólo registros de temperatura máxima y mínima (ETo_PMTxTn), en lugar del set completo de cuatro variables fundamentales. Los valores de ETo_PMTxTn explicaron 80 % de la variabilidad de aquellos obtenidos con el conjunto completo de variables. AquaCrop se calibró a partir de muestras de cobertura del cultivo, biomasa aérea y agua del suelo obtenidas en un lote de maíz tardío durante el ciclo 2015-2016. Fueron evaluadas tres fechas de siembra fijas y tres variables, sin encontrar diferencias significativas de BR para ambas DS. El adelanto o atraso de la siembra no representó un manejo que altere la condición del riesgo climático. Aunque el incremento de DS a 8 pl m-2 aumentó significativamente la BR también alcanzó rendimientos efectivos (RR) medios más altos a los obtenidos con 6 pl m-2 en 47 de los 57 ciclos de cultivo analizados. Facultad de Ciencias Agropecuarias 2019-12-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.unc.edu.ar/index.php/agris/article/view/23613 10.31047/1668.298x.v36.n2.23613 AgriScientia; Vol. 36 No. 2 (2019); 1-17 AgriScientia; Vol. 36 Núm. 2 (2019); 1-17 1668-298X 10.31047/1668.298x.v36.n2 spa https://revistas.unc.edu.ar/index.php/agris/article/view/23613/29202 https://revistas.unc.edu.ar/index.php/agris/article/view/23613/29274 |
| spellingShingle | AquaCrop crop coverage potential yield risk AquaCrop cobertura de cultivo rendimiento potencial riesgo de la Casa, Antonio Ovando, Gustavo Bressanini, Luciano Díaz, Guillermo Díaz, Pablo Miranda, Cristian Yield gap assessment for late corn with diffferent seeding densities in the central region of Córdoba, Argentina |
| title | Yield gap assessment for late corn with diffferent seeding densities in the central region of Córdoba, Argentina |
| title_alt | Evaluación de la brecha de rendimiento para maíz tardío con distintas densidades de siembra en la región central de Córdoba, Argentina |
| title_full | Yield gap assessment for late corn with diffferent seeding densities in the central region of Córdoba, Argentina |
| title_fullStr | Yield gap assessment for late corn with diffferent seeding densities in the central region of Córdoba, Argentina |
| title_full_unstemmed | Yield gap assessment for late corn with diffferent seeding densities in the central region of Córdoba, Argentina |
| title_short | Yield gap assessment for late corn with diffferent seeding densities in the central region of Córdoba, Argentina |
| title_sort | yield gap assessment for late corn with diffferent seeding densities in the central region of cordoba argentina |
| topic | AquaCrop crop coverage potential yield risk AquaCrop cobertura de cultivo rendimiento potencial riesgo |
| topic_facet | AquaCrop crop coverage potential yield risk AquaCrop cobertura de cultivo rendimiento potencial riesgo |
| url | https://revistas.unc.edu.ar/index.php/agris/article/view/23613 |
| work_keys_str_mv | AT delacasaantonio yieldgapassessmentforlatecornwithdiffferentseedingdensitiesinthecentralregionofcordobaargentina AT ovandogustavo yieldgapassessmentforlatecornwithdiffferentseedingdensitiesinthecentralregionofcordobaargentina AT bressaniniluciano yieldgapassessmentforlatecornwithdiffferentseedingdensitiesinthecentralregionofcordobaargentina AT diazguillermo yieldgapassessmentforlatecornwithdiffferentseedingdensitiesinthecentralregionofcordobaargentina AT diazpablo yieldgapassessmentforlatecornwithdiffferentseedingdensitiesinthecentralregionofcordobaargentina AT mirandacristian yieldgapassessmentforlatecornwithdiffferentseedingdensitiesinthecentralregionofcordobaargentina AT delacasaantonio evaluaciondelabrechaderendimientoparamaiztardiocondistintasdensidadesdesiembraenlaregioncentraldecordobaargentina AT ovandogustavo evaluaciondelabrechaderendimientoparamaiztardiocondistintasdensidadesdesiembraenlaregioncentraldecordobaargentina AT bressaniniluciano evaluaciondelabrechaderendimientoparamaiztardiocondistintasdensidadesdesiembraenlaregioncentraldecordobaargentina AT diazguillermo evaluaciondelabrechaderendimientoparamaiztardiocondistintasdensidadesdesiembraenlaregioncentraldecordobaargentina AT diazpablo evaluaciondelabrechaderendimientoparamaiztardiocondistintasdensidadesdesiembraenlaregioncentraldecordobaargentina AT mirandacristian evaluaciondelabrechaderendimientoparamaiztardiocondistintasdensidadesdesiembraenlaregioncentraldecordobaargentina |