| Author | Akanda, Md. Abdur Razzaque |
| Call Number | AIT Thesis no. WM-95-28 |
| Subject(s) | Water quality--Thailand--Phitsanulok
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Civil Engineering |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. WM-95-28 |
| Abstract | This study was conducted at Thabua Irrigation Project which is located at the tail-end of
the Phitsanulok Irrigation Project in the Central Plain of Thailand during the wet as well as the
early stage of dry season 1995-96. The main objectives of the study were to assess the water use
efficiency and water quality of the project for irrigation· purpose. The water use efficiency for the
wetland paddy was studied only during the wet season, 1995 but the water quality was studied
in both the wet and dry seasons. The average seepage & percolation and crop evapotranspiration
rate from the wetland paddy field were found to be 1.20-1.60 mm/day and 4.65-5 .00 mm/day
respectively. During the study, it was observed that the average weekly water use efficiency
varied from 26% to 76%. In fact, there was no need for irrigation to the paddy fields frequently
during the observation due to the sufficient residual water from flood and heavy rains that
occurred during the wet season.
From the water quality analysis, it was found that the concentrations of most important
parameters, like Nitrate, Phosphate, pH, Total Dissolved Solids and Alkanity were comparatively
higher in the field than the inlet and outlet of all study areas. This might be the direct effect of
fertilizers application in the field during the cropping season. But in overall, the concentrations
of all parameters were relatively higher in the study area-3 which is the downstream part of
Thabua irrigation project. However, the concentrations of all water quality parameters of both
surface and groundwater of the project were still within the standard ranges for irrigation purpose.
It was also observed from the study that the values of the water quality parameters of
groundwater were remarkably higher than those of surface water. It might be due to the longterm
effect of leaching for used nutrients, pesticides etc. from the crop fields. |
| Year | 1996 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. WM-95-28 |
| Type | Thesis |
| School | School of Civil Engineering |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Water Engineering and Management (WM) |
| Chairperson(s) | Loof, Rainer |
| Examination Committee(s) | Murty, V.V.N.;Onta, Pushpa Raj |
| Scholarship Donor(s) | Overseas Development Administration (ODA)
United Kingdom |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology |