| authors: | Vellidis, G. ; Smajstrla, A.G. |
| title: | MODELING SOIL WATER REDISTRIBUTION AND EXTRACTION PATTERNS OF DRIP-IRRIGATED TOMATOES ABOVE A SHALLOW WATER TABLE |
| year: | 1992 |
| source: | Amer. Soc. of Agri. Eng. 35(1):183-191 |
| URL: | Please log in to access the document. |
| abstract: | A mathematical model was developed to simulate soil water infiltration, redistribution, and extraction in a bedded soil profile overlaying a shallow water table and irrigated by a line source drip irrigation system. The model uses an implicit finite difference scheme with explicit linearization of soil parameters. Its accuracy was verified by comparison of simulated results to numerical and steady-state analytical solutions from the literature. The model was then used to simulate two-dimensional soil water movement as observed in a lysimeter study. A bedded and plastic mulched soil profile that was irrigated by a line source drip system and influenced by a shallow water table was studied in the lysimeters. The model results were in good agreement with the lysimeter data collected using a tensiometer-pressure transducer microcomputer based data acquisition system. |
| keywords: | Drip irrigation, Soil water redistribution, Tomatoes, Modeling. |
