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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1111/j.1469-8137.2011.03826.x
|2 doi
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|a eng
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|a Moradi, Ahmad B
|e verfasserin
|4 aut
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|a Three-dimensional visualization and quantification of water content in the rhizosphere
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|c 2011
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 10.02.2012
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|a Date Revised 08.04.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2011 The Authors. New Phytologist © 2011 New Phytologist Trust.
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|a • Despite the importance of rhizosphere properties for water flow from soil to roots, there is limited quantitative information on the distribution of water in the rhizosphere of plants. • Here, we used neutron tomography to quantify and visualize the water content in the rhizosphere of the plant species chickpea (Cicer arietinum), white lupin (Lupinus albus), and maize (Zea mays) 12 d after planting. • We clearly observed increasing soil water contents (θ) towards the root surface for all three plant species, as opposed to the usual assumption of decreasing water content. This was true for tap roots and lateral roots of both upper and lower parts of the root system. Furthermore, water gradients around the lower part of the roots were smaller and extended further into bulk soil compared with the upper part, where the gradients in water content were steeper. • Incorporating the hydraulic conductivity and water retention parameters of the rhizosphere into our model, we could simulate the gradual changes of θ towards the root surface, in agreement with the observations. The modelling result suggests that roots in their rhizosphere may modify the hydraulic properties of soil in a way that improves uptake under dry conditions
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Soil
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|a Water
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|a 059QF0KO0R
|2 NLM
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|a Carminati, Andrea
|e verfasserin
|4 aut
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|a Vetterlein, Doris
|e verfasserin
|4 aut
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|a Vontobel, Peter
|e verfasserin
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|a Lehmann, Eberhard
|e verfasserin
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|a Weller, Ulrich
|e verfasserin
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|a Hopmans, Jan W
|e verfasserin
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|a Vogel, Hans-Jörg
|e verfasserin
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|a Oswald, Sascha E
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1990
|g 192(2011), 3 vom: 09. Nov., Seite 653-63
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|x 1469-8137
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|g volume:192
|g year:2011
|g number:3
|g day:09
|g month:11
|g pages:653-63
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