Water Movement through Soil under Drip Irrigation using Different Hydraulic Soil Models
Drip irrigation is one of the conservative irrigation techniques since it implies supplying water directly on the soil through the emitter; it can supply water and fertilizer directly into the root zone. An equation to estimate the wetted area in unsaturated soil is taking into calculating the water...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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University of Baghdad
2020-11-01
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| Series: | Journal of Engineering |
| Subjects: | |
| Online Access: | http://joe.uobaghdad.edu.iq/index.php/main/article/view/1228 |
| _version_ | 1797717829934383104 |
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| author | Israa Saad Faraj Maysoon Basheer Abid |
| author_facet | Israa Saad Faraj Maysoon Basheer Abid |
| author_sort | Israa Saad Faraj |
| collection | DOAJ |
| description | Drip irrigation is one of the conservative irrigation techniques since it implies supplying water directly on the soil through the emitter; it can supply water and fertilizer directly into the root zone. An equation to estimate the wetted area in unsaturated soil is taking into calculating the water absorption by roots is simulated numerically using HYDRUS (2D/3D) software. In this paper, HYDRUS comprises analytical types of the estimate of different soil hydraulic properties. Used one soil type, sandy loam, with three types of crops; (corn, tomato, and sweet sorghum), different drip discharge, different initial soil moisture content was assumed, and different time durations. The relative error for the different hydraulic soil models was calculated and was compared with the model of Brooks and Corey, 1964. There was good agreement compared with different models. The Root Mean Square Error (RMSE) was (0.23) cm, while the relative error (- 1%) and (1) for modeling efficiency (EF) for wetted radius, but wetted depth was RMSE (0.99) cm, and the relative error was (4.5%), and EF was (1). |
| first_indexed | 2024-03-12T08:42:07Z |
| format | Article |
| id | doaj.art-a4b3c05bcfe84242a88e640587edb3ec |
| institution | Directory Open Access Journal |
| issn | 1726-4073 2520-3339 |
| language | English |
| last_indexed | 2024-03-12T08:42:07Z |
| publishDate | 2020-11-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Journal of Engineering |
| spelling | doaj.art-a4b3c05bcfe84242a88e640587edb3ec2023-09-02T16:42:21ZengUniversity of BaghdadJournal of Engineering1726-40732520-33392020-11-01261110.31026/j.eng.2020.11.03Water Movement through Soil under Drip Irrigation using Different Hydraulic Soil ModelsIsraa Saad Faraj0Maysoon Basheer Abid1College of Engineering - University of BaghdadCollege of Engineering - University of BaghdadDrip irrigation is one of the conservative irrigation techniques since it implies supplying water directly on the soil through the emitter; it can supply water and fertilizer directly into the root zone. An equation to estimate the wetted area in unsaturated soil is taking into calculating the water absorption by roots is simulated numerically using HYDRUS (2D/3D) software. In this paper, HYDRUS comprises analytical types of the estimate of different soil hydraulic properties. Used one soil type, sandy loam, with three types of crops; (corn, tomato, and sweet sorghum), different drip discharge, different initial soil moisture content was assumed, and different time durations. The relative error for the different hydraulic soil models was calculated and was compared with the model of Brooks and Corey, 1964. There was good agreement compared with different models. The Root Mean Square Error (RMSE) was (0.23) cm, while the relative error (- 1%) and (1) for modeling efficiency (EF) for wetted radius, but wetted depth was RMSE (0.99) cm, and the relative error was (4.5%), and EF was (1).http://joe.uobaghdad.edu.iq/index.php/main/article/view/1228HYDRUS, Porous media, Richards Equation, Simulation models, Water movement through soil, Water uptake by roots. |
| spellingShingle | Israa Saad Faraj Maysoon Basheer Abid Water Movement through Soil under Drip Irrigation using Different Hydraulic Soil Models Journal of Engineering HYDRUS, Porous media, Richards Equation, Simulation models, Water movement through soil, Water uptake by roots. |
| title | Water Movement through Soil under Drip Irrigation using Different Hydraulic Soil Models |
| title_full | Water Movement through Soil under Drip Irrigation using Different Hydraulic Soil Models |
| title_fullStr | Water Movement through Soil under Drip Irrigation using Different Hydraulic Soil Models |
| title_full_unstemmed | Water Movement through Soil under Drip Irrigation using Different Hydraulic Soil Models |
| title_short | Water Movement through Soil under Drip Irrigation using Different Hydraulic Soil Models |
| title_sort | water movement through soil under drip irrigation using different hydraulic soil models |
| topic | HYDRUS, Porous media, Richards Equation, Simulation models, Water movement through soil, Water uptake by roots. |
| url | http://joe.uobaghdad.edu.iq/index.php/main/article/view/1228 |
| work_keys_str_mv | AT israasaadfaraj watermovementthroughsoilunderdripirrigationusingdifferenthydraulicsoilmodels AT maysoonbasheerabid watermovementthroughsoilunderdripirrigationusingdifferenthydraulicsoilmodels |