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Título: | Influence of irrigation time and frequency on greenhouse gas emissions in a solid-set sprinkler-irrigated maize under mediterranean conditions |
Autor: | Franco-Luesma, Samuel CSIC ORCID; Álvaro-Fuentes, Jorge CSIC ORCID ; Plaza-Bonilla, Daniel CSIC ORCID ; Arrúe Ugarte, José Luis CSIC ORCID ; Cantero-Martínez, Carlos CSIC ORCID; Cavero Campo, José CSIC ORCID | Palabras clave: | Soil N2O emissions Sprinkler irrigation management Maize monoculture Yield scaled N2O emissions |
Fecha de publicación: | jul-2019 | Editor: | Elsevier | Citación: | Franco-Luesma S, Álvaro-Fuentes J, Plaza-Bonilla D, Arrúe JL, Cantero C, Cavero J. Influence of irrigation time and frequency on greenhouse gas emissions in a solid-set sprinkler-irrigated maize under mediterranean conditions. Agricultural Water Management 221: 303-311 (2019) | Resumen: | Irrigation management may influence soil greenhouse gas emissions (GHG). Solid-set sprinkler irrigation systems allow to modify the irrigation time and frequency. The objective of this study was to quantify the effect of two irrigation times (daytime, D; nighttime, N) and two irrigation frequencies (low, L; high, H) on soil carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) emissions in a solid-set sprinkler-irrigated maize (Zea mays L.) field located in NE Spain during 2015 and 2016 growing seasons and the fallow period between growing seasons. Compared with D irrigation, N irrigation increased soil water content (0–5 cm) in both growing seasons. Irrigation management did not affect CH4 emissions and the soil acted as a sink of CH4. Cumulative CO2 emissions were affected by the measurement period (growing season vs fallow) with the greatest values in 2015 growing season, being 81 and 32% higher over the fallow period and over the 2016 growing season, respectively, due to the effect of the preceding crop, alfalfa, and a better soil moisture conditions for the microorganism activity. Similarly, cumulative N2O emissions showed the highest values in 2015, reporting values 90 and 51% greater than the fallow period and the 2016 growing season, respectively. Moreover, N irrigation increased cumulative N2O emissions by 29% compared with D irrigation, but irrigation frequency did not affect cumulative N2O emissions. Irrigation time did not affect cumulative N2O emissions scaled per grain yield or per N uptake because N irrigation increased maize yield by 11% compared with D irrigation. Due to the lack of differences in the scaled N2O emissions, N irrigation should be consider as an appropriate strategy to optimize grain yield without compromising soil GHG emissions per unit of grain yield in Mediterranean agroecosystems. | Descripción: | 45 Pags.- 6 Figs.- 5 Tabls. The definitive version is available at: https://www.sciencedirect.com/science/journal/03783774 | Versión del editor: | https://doi.org/10.1016/j.agwat.2019.03.042 | URI: | http://hdl.handle.net/10261/187756 | DOI: | 10.1016/j.agwat.2019.03.042 | ISSN: | 0378-3774 |
Aparece en las colecciones: | (EEAD) Artículos |
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