(1) Ph. D student in Water Resource Engineering Programme, Khon Kaen University, Thailand
(2) Prof.Dr. Tokyo University of Agriculture and Technology, Japan
(3) Khon Kaen University, Thailand
Evapotranspiration (Et) information used for irrigation scheduling may benefit farmers in increasing the irrigations area and evaluating amount of water applied. In Thailand, there are several methods of evapotranspiration estimating. The Bowen ration technique is the method of evapotranspiration estimating which is firstly applied to paddy field in Thailand. This research is attempted to generate the basic meteorological data which are necessary for formulating simple model to determine evapotranspiration. The model is simplified evapotranspiration from Bowen ratio technique with linear regression method using basic meteorological data. By comparing evapotranspiration from simple model with evapotranspiration from Bowen ratio method, it shows the similar pattern of distribution over a year. Therefore, in the paddy field area of which limited meteorological data, the simple model can be applied for evapotranspiration estimating.
Submittal Information
Name :
Date :
Panya Polsan
02-Aug-04-13:14:28
Organization :
Theme :
Royal Irrigation Department,
Theme 5
Address :
Presentation :
Hydrology and Water Management Center, Tha Thong, Muang, Phitsanulok 65000