Eco-physiological processes underlying maize water use efficiency response to plant density under contrasting water regimes
This study quantified maize (Zea mays L.) water use efficiency for grain yield (WUEg) in response to plant density under contrasting water regimes; and focused on relevant eco-physiologial processes underlying the responses of maize WUEg to plant density (i.e., the proportion of transpiration in the...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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Elsevier
2020
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12123/7697 https://www.sciencedirect.com/science/article/abs/pii/S0378429020302264 https://doi.org/10.1016/j.fcr.2020.107844 |
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| author | Hernandez, Mariano Daniel Alfonso, Carla Susana Cerrudo, Aníbal Alejandro Cambareri, Matias Della Maggiora, Aida Barbieri, Pablo Echarte, María Mercedes Echarte, Laura |
| author_browse | Alfonso, Carla Susana Barbieri, Pablo Cambareri, Matias Cerrudo, Aníbal Alejandro Della Maggiora, Aida Echarte, Laura Echarte, María Mercedes Hernandez, Mariano Daniel |
| author_facet | Hernandez, Mariano Daniel Alfonso, Carla Susana Cerrudo, Aníbal Alejandro Cambareri, Matias Della Maggiora, Aida Barbieri, Pablo Echarte, María Mercedes Echarte, Laura |
| author_sort | Hernandez, Mariano Daniel |
| collection | INTA Digital |
| description | This study quantified maize (Zea mays L.) water use efficiency for grain yield (WUEg) in response to plant density under contrasting water regimes; and focused on relevant eco-physiologial processes underlying the responses of maize WUEg to plant density (i.e., the proportion of transpiration in the total water used, T/ET; and the crop growth rate during the critical period for kernel set, CGRcp). Maize crops were grown at Balcarce, Argentina during two seasons. Treatments included two water regimes (i.e., rainfed and irrigated) and three plant densities (4, 8 and 12 plants m−2). Measurements comprised (i) soil water content and iPAR during the whole growing season, (ii) shoot biomass around silking and (iii) grain yield and shoot biomass at physiological maturity. Crop ET was calculated by means of water balance and soil evaporation was measured with micro-lysimeters. The response of WUEg to increasing plant density from 4 to 8 or from 4 to 12 plants m−2 was influenced by seasonal water supply. Both seasonal ET and T/ET consistently increased with plant densities across contrasting water regimes. Although increments in T/ET partition were in accordance with increasing iPAR, they did not promote higher WUEg at low water supply. Grain yield increased with plant density, except in the driest environment where no response of either grain yield nor WUEg to plant density was detected. Our results showed that the response of CGRcp to plant density increments (i) depended on the water supply, and (ii) contributed to explain WUEg response to plant density under contrasting water supplies. |
| format | info:ar-repo/semantics/artículo |
| id | INTA7697 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA76972020-08-10T19:22:36Z Eco-physiological processes underlying maize water use efficiency response to plant density under contrasting water regimes Hernandez, Mariano Daniel Alfonso, Carla Susana Cerrudo, Aníbal Alejandro Cambareri, Matias Della Maggiora, Aida Barbieri, Pablo Echarte, María Mercedes Echarte, Laura Maíz Evaporación Transpiración Relaciones Planta Agua Radiación Espaciamiento Rendimiento de Cultivos Maize Evaporation Traspiration Plant Water Relations Radiation Spacing Crop Yield Densidad de Plantación This study quantified maize (Zea mays L.) water use efficiency for grain yield (WUEg) in response to plant density under contrasting water regimes; and focused on relevant eco-physiologial processes underlying the responses of maize WUEg to plant density (i.e., the proportion of transpiration in the total water used, T/ET; and the crop growth rate during the critical period for kernel set, CGRcp). Maize crops were grown at Balcarce, Argentina during two seasons. Treatments included two water regimes (i.e., rainfed and irrigated) and three plant densities (4, 8 and 12 plants m−2). Measurements comprised (i) soil water content and iPAR during the whole growing season, (ii) shoot biomass around silking and (iii) grain yield and shoot biomass at physiological maturity. Crop ET was calculated by means of water balance and soil evaporation was measured with micro-lysimeters. The response of WUEg to increasing plant density from 4 to 8 or from 4 to 12 plants m−2 was influenced by seasonal water supply. Both seasonal ET and T/ET consistently increased with plant densities across contrasting water regimes. Although increments in T/ET partition were in accordance with increasing iPAR, they did not promote higher WUEg at low water supply. Grain yield increased with plant density, except in the driest environment where no response of either grain yield nor WUEg to plant density was detected. Our results showed that the response of CGRcp to plant density increments (i) depended on the water supply, and (ii) contributed to explain WUEg response to plant density under contrasting water supplies. EEA Balcarce Fil: Hernández, Mariano D. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Alfonso, Carla S. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Cerrudo, Aníbal Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Cambareri, Matías. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Della Maggiora, Aída. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Barbieri, Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Echarte, María Mercedes. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Echarte, Laura. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. 2020-08-10T19:14:32Z 2020-08-10T19:14:32Z 2020-09 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/7697 https://www.sciencedirect.com/science/article/abs/pii/S0378429020302264 0378-4290 https://doi.org/10.1016/j.fcr.2020.107844 eng info:eu-repo/semantics/restrictedAccess application/pdf Elsevier Field Crops Research 254 : 107844 (September 2020) |
| spellingShingle | Maíz Evaporación Transpiración Relaciones Planta Agua Radiación Espaciamiento Rendimiento de Cultivos Maize Evaporation Traspiration Plant Water Relations Radiation Spacing Crop Yield Densidad de Plantación Hernandez, Mariano Daniel Alfonso, Carla Susana Cerrudo, Aníbal Alejandro Cambareri, Matias Della Maggiora, Aida Barbieri, Pablo Echarte, María Mercedes Echarte, Laura Eco-physiological processes underlying maize water use efficiency response to plant density under contrasting water regimes |
| title | Eco-physiological processes underlying maize water use efficiency response to plant density under contrasting water regimes |
| title_full | Eco-physiological processes underlying maize water use efficiency response to plant density under contrasting water regimes |
| title_fullStr | Eco-physiological processes underlying maize water use efficiency response to plant density under contrasting water regimes |
| title_full_unstemmed | Eco-physiological processes underlying maize water use efficiency response to plant density under contrasting water regimes |
| title_short | Eco-physiological processes underlying maize water use efficiency response to plant density under contrasting water regimes |
| title_sort | eco physiological processes underlying maize water use efficiency response to plant density under contrasting water regimes |
| topic | Maíz Evaporación Transpiración Relaciones Planta Agua Radiación Espaciamiento Rendimiento de Cultivos Maize Evaporation Traspiration Plant Water Relations Radiation Spacing Crop Yield Densidad de Plantación |
| url | http://hdl.handle.net/20.500.12123/7697 https://www.sciencedirect.com/science/article/abs/pii/S0378429020302264 https://doi.org/10.1016/j.fcr.2020.107844 |
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