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M.H.J.P. Gunarathna, Kazuhito Sakai, Tamotsu Nakandakari, Kazuro Momii and M.K.N. Kumari
Poor data availability on soil hydraulic properties in tropical regions hampers many studies, including crop and environmental modeling. The high cost and effort of measurement and the increasing demand for such data have driven researchers to search for...
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Lanthika Dhanapala, M. H. J. P. Gunarathna, M. K. N. Kumari, Manjula Ranagalage, Kazuhito Sakai and T. J. Meegastenna
The Nilwala river basin is prone to frequent flooding during the southwest monsoon and second intermonsoon periods. Several studies have recommended coupling 1D and 2D models for flood modelling as they provide sufficient descriptive information of flood...
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M. H. J. P. Gunarathna, Kazuhito Sakai, Tamotsu Nakandakari, Kazuro Momii, Tsuneo Onodera, Hiroyuki Kaneshiro, Hiroshi Uehara and Kousuke Wakasugi
Climate change may harm the growth and yield of sugarcane (Saccharum officinarum L.) without the introduction of appropriate irrigation facilities. Therefore, new irrigation methods should be developed to maximize water use efficiency and reduce operatio...
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M. H. J. P. Gunarathna, Kazuhito Sakai, Tamotsu Nakandakari, Momii Kazuro, Tsuneo Onodera, Hiroyuki Kaneshiro, Hiroshi Uehara and Kousuke Wakasugi
Technologies that ensure the availability of water for crops need to be developed in order for agriculture to be sustainable in the face of climate change. Irrigation is costly, so technologies need to be improved or newly developed, not only with the ai...
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Ken Okamoto, Kazuhito Sakai, Shinya Nakamura, Hiroyuki Cho, Tamotsu Nakandakari and Shota Ootani
We examined the influence of input soil hydraulic parameters on HYDRUS-1D simulations of evapotranspiration and volumetric water contents (VWCs) in the unsaturated zone of a sugarcane field on the island of Miyakojima, Japan. We first optimized the param...
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