A modified empirical model for estimating the wetted zone dimensions under drip irrigation
Drip irrigation system has become one of the most common irrigation systems especially in arid and semi-arid regions due to its advantages in saving water. One of the most essential considerations in designing these systems is the dimensions of the wetted soil volume under emitters. These dimensions...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Penerbit UTM Press
2015
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| Online Access: | http://psasir.upm.edu.my/id/eprint/43515/ http://psasir.upm.edu.my/id/eprint/43515/1/abstract00.pdf |
| _version_ | 1848850249094791168 |
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| author | Al-Ogaidi, Ahmed A. M. Wayayok, Aimrun Kamal, Md. Rowshon Abdullah, Ahmed Fikri |
| author_facet | Al-Ogaidi, Ahmed A. M. Wayayok, Aimrun Kamal, Md. Rowshon Abdullah, Ahmed Fikri |
| author_sort | Al-Ogaidi, Ahmed A. M. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Drip irrigation system has become one of the most common irrigation systems especially in arid and semi-arid regions due to its advantages in saving water. One of the most essential considerations in designing these systems is the dimensions of the wetted soil volume under emitters. These dimensions are significant in choosing the proper emitter spacing along the laterals and the suitable distance between laterals. In this study, a modified empirical equations for estimating the horizontal and vertical extend of the wetted zone under surface emitters were suggested. Data from published papers includes different conditions of soil properties and emitter discharge were used in deriving the empirical model using the nonlinear regression. The developed model has high value for coefficient of determination, R2. The results from the developed model were compared with results of other empirical models derived by other researchers. Some statistical criteria were used to evaluate the model performance which are the mean error ME, root mean square error RMSE, and model efficiency EF. The results revealed that the modified model showed good performance in predicting the wetted zone dimensions and it can be used in design and management of drip irrigation systems. |
| first_indexed | 2025-11-15T10:03:17Z |
| format | Article |
| id | upm-43515 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:03:17Z |
| publishDate | 2015 |
| publisher | Penerbit UTM Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-435152016-06-29T01:00:27Z http://psasir.upm.edu.my/id/eprint/43515/ A modified empirical model for estimating the wetted zone dimensions under drip irrigation Al-Ogaidi, Ahmed A. M. Wayayok, Aimrun Kamal, Md. Rowshon Abdullah, Ahmed Fikri Drip irrigation system has become one of the most common irrigation systems especially in arid and semi-arid regions due to its advantages in saving water. One of the most essential considerations in designing these systems is the dimensions of the wetted soil volume under emitters. These dimensions are significant in choosing the proper emitter spacing along the laterals and the suitable distance between laterals. In this study, a modified empirical equations for estimating the horizontal and vertical extend of the wetted zone under surface emitters were suggested. Data from published papers includes different conditions of soil properties and emitter discharge were used in deriving the empirical model using the nonlinear regression. The developed model has high value for coefficient of determination, R2. The results from the developed model were compared with results of other empirical models derived by other researchers. Some statistical criteria were used to evaluate the model performance which are the mean error ME, root mean square error RMSE, and model efficiency EF. The results revealed that the modified model showed good performance in predicting the wetted zone dimensions and it can be used in design and management of drip irrigation systems. Penerbit UTM Press 2015 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/43515/1/abstract00.pdf Al-Ogaidi, Ahmed A. M. and Wayayok, Aimrun and Kamal, Md. Rowshon and Abdullah, Ahmed Fikri (2015) A modified empirical model for estimating the wetted zone dimensions under drip irrigation. Jurnal Teknologi, 76 (15). pp. 69-73. ISSN 0127–9696; ESSN: 2180–3722 http://www.jurnalteknologi.utm.my |
| spellingShingle | Al-Ogaidi, Ahmed A. M. Wayayok, Aimrun Kamal, Md. Rowshon Abdullah, Ahmed Fikri A modified empirical model for estimating the wetted zone dimensions under drip irrigation |
| title | A modified empirical model for estimating the wetted zone dimensions under drip irrigation |
| title_full | A modified empirical model for estimating the wetted zone dimensions under drip irrigation |
| title_fullStr | A modified empirical model for estimating the wetted zone dimensions under drip irrigation |
| title_full_unstemmed | A modified empirical model for estimating the wetted zone dimensions under drip irrigation |
| title_short | A modified empirical model for estimating the wetted zone dimensions under drip irrigation |
| title_sort | modified empirical model for estimating the wetted zone dimensions under drip irrigation |
| url | http://psasir.upm.edu.my/id/eprint/43515/ http://psasir.upm.edu.my/id/eprint/43515/ http://psasir.upm.edu.my/id/eprint/43515/1/abstract00.pdf |