الفهرس Only 14 pages are availabe for public view
 |  | from | 103 |  |  |
| | | from | 103 | | |
Abstract
The present work was conducted to study the effect of tile drainage system on :1-Some soil hydrological, physical and chemical properties 2- To indicate the importance of drainage for heavy clay soils in North Nile Delta. and 3- To evaluate the efficiency of tile drainage system in such heavy clay soil.