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https://hdl.handle.net/1959.11/26764
Title: | In-situ partitioning of evaporation and transpiration components using a portable evapotranspiration dome-A case study in Tall Fescue (Festuca arundinacea) | Contributor(s): | Alam, Muhammad Shahinur (author); Rahman, Muhammad Moshiur (author) ; Lamb, David W (author) | Publication Date: | 2019-03 | Early Online Version: | 2018-11-05 | DOI: | 10.1016/j.agwat.2018.10.042 | Handle Link: | https://hdl.handle.net/1959.11/26764 | Abstract: | Understanding the components of water consumption of a crop or pasture through evapotranspiration is important for improving water management. In this study the FAO dual crop coefficient methodology has been used in conjunction with a portable evapotranspiration chamber in-situ, to quantify the basal crop (Kcb ) and soil evaporation (Ke ) coefficients of a pasture as a function of leaf area index and a widely used spectro-optical reflectance index, NDVI. To facilitate the measurement of soil evaporation component, small segments of the green biomass of a target pasture canopy, Tall Fescue (Festuca arundinacea var. Dovey) were allowed to rapidly senesce by applying a commercial herbicide while preserving the soil moisture and canopy structure. The ratio between the transpiration and evapotranspiration components (Kcb/Kc) increased from 0.03 to 0.46 for zero to highest available vegetation cover (LAI from 0 to 4.22). A significant linear relationship was observed between Kcb and NDVI (R² = 0.88) suggesting the possibility of using the latter, for example through remote sensing technologies, to determine the former. | Publication Type: | Journal Article | Source of Publication: | Agricultural Water Management, v.213, p. 352-357 | Publisher: | Elsevier BV | Place of Publication: | Netherlands | ISSN: | 1873-2283 0378-3774 |
Fields of Research (FoR) 2008: | 070304 Crop and Pasture Biomass and Bioproducts 070104 Agricultural Spatial Analysis and Modelling |
Fields of Research (FoR) 2020: | 300405 Crop and pasture biomass and bioproducts 300206 Agricultural spatial analysis and modelling |
Socio-Economic Objective (SEO) 2008: | 829805 Management of Water Consumption by Plant Production 830403 Native and Residual Pastures |
Socio-Economic Objective (SEO) 2020: | 260104 Management of water consumption by plant production 100503 Native and residual pastures |
Peer Reviewed: | Yes | HERDC Category Description: | C1 Refereed Article in a Scholarly Journal |
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Appears in Collections: | Journal Article School of Science and Technology |
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