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Modeling water balance components in rice field irrigation

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Main Authors: Lee, Teang Shui, M., Aminul Haque, Huang, Yuk Feng
Format: Article
Language:English
Published: The Institution of Engineers, Malaysia 2011
Subjects:
Effective rainfall
Evapotranspiration
Water balance model
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/13731
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spelling my.unimap-137312011-09-13T04:41:42Z Modeling water balance components in rice field irrigation Lee, Teang Shui M., Aminul Haque Huang, Yuk Feng Effective rainfall Evapotranspiration Water balance model Link to publisher's homepage at http://www.myiem.org.my/ In this study, a water balance equation approach was applied to the irrigation practiced at the Besut Rice Irrigation Scheme. Each component of the equilibrium equation, where not measured, was modeled using equations sourced from the literature. Results obtained from the modeling exercise were compared with measured data whenever available. The reference evapotranspiration (ETo) modeled with the Penman-Monteith equation for the monthly time series; was evaluated to be 3.6 mm/day and 3.5 mm/day for off-season (May – October) and main season (November – April) crops respectively. Effective rainfall was estimated using the water use-rainfall ratio method, with monthly rainfalls data from 1951 to 1998, for three rainfall stations. It has been observed that 68% and 54% of rainfall accounts as effective rainfall during the pre-saturation and crop growth periods respectively. The water subsidence technique was used to estimate the average daily seepage cum percolation rate, and results showed this to be 2.4 mm/day for the site. Comparisons between model component outputs and observed and recorded field data are good. The water balance components can be adequately used to monitor field conditions for rice irrigation in Malaysia. 2011-09-13T04:41:42Z 2011-09-13T04:41:42Z 2006-12 Article The Journal of the Institution of Engineers, Malaysia, vol. 67(4), 2006, pages 22-25 0126-513X http://myiem.org.my/content/iem_journal_2006-177.aspx http://hdl.handle.net/123456789/13731 en The Institution of Engineers, Malaysia
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Effective rainfall
Evapotranspiration
Water balance model
spellingShingle Effective rainfall
Evapotranspiration
Water balance model
Lee, Teang Shui
M., Aminul Haque
Huang, Yuk Feng
Modeling water balance components in rice field irrigation
description Link to publisher's homepage at http://www.myiem.org.my/
format Article
author Lee, Teang Shui
M., Aminul Haque
Huang, Yuk Feng
author_facet Lee, Teang Shui
M., Aminul Haque
Huang, Yuk Feng
author_sort Lee, Teang Shui
title Modeling water balance components in rice field irrigation
title_short Modeling water balance components in rice field irrigation
title_full Modeling water balance components in rice field irrigation
title_fullStr Modeling water balance components in rice field irrigation
title_full_unstemmed Modeling water balance components in rice field irrigation
title_sort modeling water balance components in rice field irrigation
publisher The Institution of Engineers, Malaysia
publishDate 2011
url http://dspace.unimap.edu.my/xmlui/handle/123456789/13731
_version_ 1643790923911397376
score 13.226497

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