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| DOI: | 10.2136/sssaj2009.0340 |
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| Web URL(s): | https://acsess.onlinelibrary.wiley.com/doi/10.2136/sssaj2009.0340
Last checked: 02/26/2024
Access conditions: Item is within a limited-access website
Notes: Abstract only
https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2136/sssaj2009.0340
Last checked: 02/26/2024
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Communar, Gregory;
Friedman, Shmulik P. |
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| Author Affiliation: | Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, The Volcani Center, Israel |
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| Title: | Relative water uptake rate as a criterion for trickle irrigation system design: III. Subsurface trickle irrigation |
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| Section: | Soil physics
Other records with the "Soil physics" Section
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| Source: | Soil Science Society of America Journal. Vol. 74, No. 5, September 2010, p. 1518-1525. |
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| Publishing Information: | Madison, WI: Soil Science Society of America |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Absorption rate; Groundwater recharge; Drip irrigation; Evaporation; Growth analysis; Irrigation system design; Mathematical equations; Models; Root systems; Source sink relations; Subsurface irrigation; Transpiration; Water uptake
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| Abstract/Contents: | "The objective of this study was to apply a coupled source-sink modeling approach to subsurface trickle irrigation design, to determine the maximum possible relative water uptake rate and to evaluate its dependence on soil type, emitter depths, atmospheric evaporative demand, and rooting zone size. The early stage of plant growth (sink-above-source scenario) was modeled by placing a point sink of unknown strength between the soil surface (evaporating or nonevaporating) and a subsurface point source of given strength; for the subsequent stage of plant growth, i.e., most of the irrigation season, a point sink was located below the subsurface source. The principal approach involved determination of the relative water uptake by applying the maximum suction pressure (zero matric flux potential) at an isobar that bounds a conceived rooting zone domain. A major motivation for using subsurface drip irrigation is to reduce evaporation. This study shows that evaporation affects mainly the ratio of water loss by deep percolation to water loss by evaporation and that it has negligible influence on the water uptake rate. In the early-stage scenario, water uptake competes with gravitational forces. Therefore water uptake is generally small and decreases significantly with increasing root-system radius. In the late-stage scenario, the relative water uptake rate still decreases as the root system radius increases, but it remains larger than in the early-stage scenario. Some features of the flow field, with and without evaporation, are illustrated by plotting streamlines and contours of constant water saturation degree for these two scenarios." |
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| Language: | English |
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| References: | 25 |
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| See Also: | See also Part 1 " Relative water uptake rate as a criterion for trickle irrigation system design: I. Coupled source-sink steady water flow model" Soil Science Society of America Journal, 74(5) September 2010, p. 1493-1508 R=169317 R=169317
See also Part 2 " Relative water uptake rate as a criterion for trickle irrigation system design: II. Surface trickle irrigation" Soil Science Society of America Journal, 74(5) September 2010, p. 1509-1517 R=169318 R=169318 |
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| Note: | Figures
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Communar, G., and S. P. Friedman. 2010. Relative water uptake rate as a criterion for trickle irrigation system design: III. Subsurface trickle irrigation. Soil Sci. Soc. Am. J. 74(5):p. 1518-1525. |
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| DOI: 10.2136/sssaj2009.0340 |
| Web URL(s):
https://acsess.onlinelibrary.wiley.com/doi/10.2136/sssaj2009.0340
Last checked: 02/26/2024
Access conditions: Item is within a limited-access website
Notes: Abstract only
https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2136/sssaj2009.0340
Last checked: 02/26/2024
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2199342a |
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