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Root-induced processes controlling phosphate availability in soils with contrasted P-fertilized treatments

Aims In this study we identified the nature of the root-induced chemical processes controlling changes in phosphate (P) availability in a soil with two P loadings resulting from long-term fertilization treatments. Methods We used a set of mechanistic adsorption models (surface complexation and ion e... Full description

Journal Title: Plant and soil 2011, Vol.348 (1/2), p.203-218
Main Author: Devau, Nicolas
Other Authors: Hinsinger, Philippe , Le Cadre, Edith , Gérard, Frédéric
Format: Electronic Article Electronic Article
Language: English
Subjects:
sol
Publisher: Dordrecht: Springer
ID: ISSN: 0032-079X
Link: https://hal.archives-ouvertes.fr/hal-01506068
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recordid: cdi_hal_primary_oai_HAL_hal_01506068v1
title: Root-induced processes controlling phosphate availability in soils with contrasted P-fertilized treatments
format: Article
creator:
  • Devau, Nicolas
  • Hinsinger, Philippe
  • Le Cadre, Edith
  • Gérard, Frédéric
subjects:
  • Acid soils
  • Adsorption
  • Agricultural soils
  • Alkaline soils
  • argile
  • Biomedical and Life Sciences
  • blé
  • Calcium
  • Calcium influx
  • cereal
  • Clay
  • Clay soils
  • céréale
  • Ecology
  • Environmental aspects
  • Extractants
  • fertilisation phosphorée
  • fertilité du sol
  • Fertilization
  • Forest soils
  • Ion exchange
  • Life Sciences
  • Minerals
  • modèle de complexation de surface
  • Phosphate
  • Phosphatic fertilizers
  • Phosphorus content
  • phosphorus fertilization
  • Plant biology
  • Plant Physiology
  • Plant roots
  • Plant Sciences
  • Plant-soil relationships
  • Plants
  • Regular Article
  • Rhizosphere
  • rhizosphère
  • Roots
  • Soil
  • soil fertility
  • Soil microorganisms
  • Soil research
  • Soil Science & Conservation
  • Soils
  • sol
  • surface complexation model
  • symbiose
  • symbiosis
  • Triticum aestivum
  • Vegetal Biology
  • Wheat
ispartof: Plant and soil, 2011, Vol.348 (1/2), p.203-218
description: Aims In this study we identified the nature of the root-induced chemical processes controlling changes in phosphate (P) availability in a soil with two P loadings resulting from long-term fertilization treatments. Methods We used a set of mechanistic adsorption models (surface complexation and ion exchange) within the framework of the component additive approach to simulate the effect of dumm wheat roots on P availability. We had to consider the influence of adsorption of other ions to ensure the goodness-of-fit of the simulations. Results We found that Ca2+ uptake, in addition to P uptake and root-induced alkalization, controlled P availability in the rhizosphere regardless of the fertilization level. The relative influence of these three processes depends primarily on the extradant used to estimate P availability. Calcium uptake was the most significant process in water extracts, whereas P uptake was the dominant root-induced chemical process in CaCl2 extracts. Under low Ca concentrations, Ca2+ uptake decreased the promoting influence of Ca2+ adsorption on P adsorption. Conclusions In addition to confirming the validity of our approach to model P availability, the present investigation indicated that root-induced processes markedly affect P availability irrespective of the fertilization level.
language: eng
source:
identifier: ISSN: 0032-079X
fulltext: no_fulltext
issn:
  • 0032-079X
  • 1573-5036
url: Link


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titleRoot-induced processes controlling phosphate availability in soils with contrasted P-fertilized treatments
creatorDevau, Nicolas ; Hinsinger, Philippe ; Le Cadre, Edith ; Gérard, Frédéric
creatorcontribDevau, Nicolas ; Hinsinger, Philippe ; Le Cadre, Edith ; Gérard, Frédéric
descriptionAims In this study we identified the nature of the root-induced chemical processes controlling changes in phosphate (P) availability in a soil with two P loadings resulting from long-term fertilization treatments. Methods We used a set of mechanistic adsorption models (surface complexation and ion exchange) within the framework of the component additive approach to simulate the effect of dumm wheat roots on P availability. We had to consider the influence of adsorption of other ions to ensure the goodness-of-fit of the simulations. Results We found that Ca2+ uptake, in addition to P uptake and root-induced alkalization, controlled P availability in the rhizosphere regardless of the fertilization level. The relative influence of these three processes depends primarily on the extradant used to estimate P availability. Calcium uptake was the most significant process in water extracts, whereas P uptake was the dominant root-induced chemical process in CaCl2 extracts. Under low Ca concentrations, Ca2+ uptake decreased the promoting influence of Ca2+ adsorption on P adsorption. Conclusions In addition to confirming the validity of our approach to model P availability, the present investigation indicated that root-induced processes markedly affect P availability irrespective of the fertilization level.
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languageeng
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subjectAcid soils ; Adsorption ; Agricultural soils ; Alkaline soils ; argile ; Biomedical and Life Sciences ; blé ; Calcium ; Calcium influx ; cereal ; Clay ; Clay soils ; céréale ; Ecology ; Environmental aspects ; Extractants ; fertilisation phosphorée ; fertilité du sol ; Fertilization ; Forest soils ; Ion exchange ; Life Sciences ; Minerals ; modèle de complexation de surface ; Phosphate ; Phosphatic fertilizers ; Phosphorus content ; phosphorus fertilization ; Plant biology ; Plant Physiology ; Plant roots ; Plant Sciences ; Plant-soil relationships ; Plants ; Regular Article ; Rhizosphere ; rhizosphère ; Roots ; Soil ; soil fertility ; Soil microorganisms ; Soil research ; Soil Science & Conservation ; Soils ; sol ; surface complexation model ; symbiose ; symbiosis ; Triticum aestivum ; Vegetal Biology ; Wheat
ispartofPlant and soil, 2011, Vol.348 (1/2), p.203-218
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descriptionAims In this study we identified the nature of the root-induced chemical processes controlling changes in phosphate (P) availability in a soil with two P loadings resulting from long-term fertilization treatments. Methods We used a set of mechanistic adsorption models (surface complexation and ion exchange) within the framework of the component additive approach to simulate the effect of dumm wheat roots on P availability. We had to consider the influence of adsorption of other ions to ensure the goodness-of-fit of the simulations. Results We found that Ca2+ uptake, in addition to P uptake and root-induced alkalization, controlled P availability in the rhizosphere regardless of the fertilization level. The relative influence of these three processes depends primarily on the extradant used to estimate P availability. Calcium uptake was the most significant process in water extracts, whereas P uptake was the dominant root-induced chemical process in CaCl2 extracts. Under low Ca concentrations, Ca2+ uptake decreased the promoting influence of Ca2+ adsorption on P adsorption. Conclusions In addition to confirming the validity of our approach to model P availability, the present investigation indicated that root-induced processes markedly affect P availability irrespective of the fertilization level.
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13Ecology
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19Forest soils
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21Life Sciences
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23modèle de complexation de surface
24Phosphate
25Phosphatic fertilizers
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atitleRoot-induced processes controlling phosphate availability in soils with contrasted P-fertilized treatments
jtitlePlant and soil
stitlePlant Soil
date2011-11-01
risdate2011
volume348
issue1/2
spage203
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pages203-218
issn0032-079X
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abstractAims In this study we identified the nature of the root-induced chemical processes controlling changes in phosphate (P) availability in a soil with two P loadings resulting from long-term fertilization treatments. Methods We used a set of mechanistic adsorption models (surface complexation and ion exchange) within the framework of the component additive approach to simulate the effect of dumm wheat roots on P availability. We had to consider the influence of adsorption of other ions to ensure the goodness-of-fit of the simulations. Results We found that Ca2+ uptake, in addition to P uptake and root-induced alkalization, controlled P availability in the rhizosphere regardless of the fertilization level. The relative influence of these three processes depends primarily on the extradant used to estimate P availability. Calcium uptake was the most significant process in water extracts, whereas P uptake was the dominant root-induced chemical process in CaCl2 extracts. Under low Ca concentrations, Ca2+ uptake decreased the promoting influence of Ca2+ adsorption on P adsorption. Conclusions In addition to confirming the validity of our approach to model P availability, the present investigation indicated that root-induced processes markedly affect P availability irrespective of the fertilization level.
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doi10.1007/s11104-011-0935-3
orcididhttps://orcid.org/0000-0001-5458-1259
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