Numerical simulations to estimate wetted soil volumes in subsurface drip irrigation
ABSTRACT Water scarcity has become a concern for many countries; a proper irrigation system is essential for rational water use. Therefore, information on water dynamics within the wetted soil is necessary. Field investigations and laboratory analyses can measure wetted soil volume dimensions, but t...
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| Format: | Article |
| Language: | English |
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Universidade Federal do Ceará
2023-03-01
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| Series: | Revista Ciência Agronômica |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902023000100410&lng=en&tlng=en |
| _version_ | 1797871159605198848 |
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| author | Katarina Lira Grecco Claudinei Fonseca Souza |
| author_facet | Katarina Lira Grecco Claudinei Fonseca Souza |
| author_sort | Katarina Lira Grecco |
| collection | DOAJ |
| description | ABSTRACT Water scarcity has become a concern for many countries; a proper irrigation system is essential for rational water use. Therefore, information on water dynamics within the wetted soil is necessary. Field investigations and laboratory analyses can measure wetted soil volume dimensions, but these are time-consuming and costly. Mathematical models can also be used to obtain such information based on soil physical-hydraulic properties, among the most used models in HYDRUS-2D. In this sense, we aimed to simulate water movement in a sandy soil profile using the HYDRUS-2D model for subsurface drippers at different spacings, depths, and flows rates. Initially, a greenhouse test was carried out to validate HYDRUS-2D for the soil Psamment (Ferralic Arenosol). After validation, simulations for drippers were arranged as follows: spacings of 0.30, 0.40, and 0.50 m; depths of 0.20, 0.25, and 0.30 m; and flow rates of 1.0 and 1.6 L h-1. In all simulations, ten applications of 1 L of water were carried out. Simulations showed that the dripper spacing, depth, and flow rate of 0.40 m, 0.20 m, and 1.6 L h-1 presented the best performance. In this configuration, wetted soil volume remained at an adequate depth in a scenario of sugarcane root and near the surface, avoiding economic and environmental costs due to water losses to deeper soil layers. |
| first_indexed | 2024-04-10T00:39:47Z |
| format | Article |
| id | doaj.art-996617f17306497da65d6abf7db61b04 |
| institution | Directory Open Access Journal |
| issn | 1806-6690 |
| language | English |
| last_indexed | 2024-04-10T00:39:47Z |
| publishDate | 2023-03-01 |
| publisher | Universidade Federal do Ceará |
| record_format | Article |
| series | Revista Ciência Agronômica |
| spelling | doaj.art-996617f17306497da65d6abf7db61b042023-03-14T07:32:05ZengUniversidade Federal do CearáRevista Ciência Agronômica1806-66902023-03-015410.5935/1806-6690.20230010Numerical simulations to estimate wetted soil volumes in subsurface drip irrigationKatarina Lira Greccohttps://orcid.org/0000-0002-1328-2364Claudinei Fonseca Souzahttps://orcid.org/0000-0001-9501-0794ABSTRACT Water scarcity has become a concern for many countries; a proper irrigation system is essential for rational water use. Therefore, information on water dynamics within the wetted soil is necessary. Field investigations and laboratory analyses can measure wetted soil volume dimensions, but these are time-consuming and costly. Mathematical models can also be used to obtain such information based on soil physical-hydraulic properties, among the most used models in HYDRUS-2D. In this sense, we aimed to simulate water movement in a sandy soil profile using the HYDRUS-2D model for subsurface drippers at different spacings, depths, and flows rates. Initially, a greenhouse test was carried out to validate HYDRUS-2D for the soil Psamment (Ferralic Arenosol). After validation, simulations for drippers were arranged as follows: spacings of 0.30, 0.40, and 0.50 m; depths of 0.20, 0.25, and 0.30 m; and flow rates of 1.0 and 1.6 L h-1. In all simulations, ten applications of 1 L of water were carried out. Simulations showed that the dripper spacing, depth, and flow rate of 0.40 m, 0.20 m, and 1.6 L h-1 presented the best performance. In this configuration, wetted soil volume remained at an adequate depth in a scenario of sugarcane root and near the surface, avoiding economic and environmental costs due to water losses to deeper soil layers.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902023000100410&lng=en&tlng=enWater contentHYDRUS-2DIrrigation projectMathematical model. |
| spellingShingle | Katarina Lira Grecco Claudinei Fonseca Souza Numerical simulations to estimate wetted soil volumes in subsurface drip irrigation Revista Ciência Agronômica Water content HYDRUS-2D Irrigation project Mathematical model. |
| title | Numerical simulations to estimate wetted soil volumes in subsurface drip irrigation |
| title_full | Numerical simulations to estimate wetted soil volumes in subsurface drip irrigation |
| title_fullStr | Numerical simulations to estimate wetted soil volumes in subsurface drip irrigation |
| title_full_unstemmed | Numerical simulations to estimate wetted soil volumes in subsurface drip irrigation |
| title_short | Numerical simulations to estimate wetted soil volumes in subsurface drip irrigation |
| title_sort | numerical simulations to estimate wetted soil volumes in subsurface drip irrigation |
| topic | Water content HYDRUS-2D Irrigation project Mathematical model. |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902023000100410&lng=en&tlng=en |
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