Interaction between contrasting rice genotypes and soil physical conditions induced by hydraulic stresses typical of alternate wetting and drying irrigation of soil

Huan Fang; Hu Zhou; Gareth J Norton; Adam H Price; Annette Raffan; Sacha J. Mooney; Xinhua Peng; Paul D Hallett

doi:10.1007/s11104-018-3715-5

Interaction between contrasting rice genotypes and soil physical conditions induced by hydraulic stresses typical of alternate wetting and drying irrigation of soil

Huan Fang, Hu Zhou, Gareth J Norton, Adam H Price, Annette Raffan, Sacha J. Mooney, Xinhua Peng, Paul D Hallett

Research output: Contribution to journal › Article › peer-review

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Abstract

Background and aims: Alternate wetting and drying (AWD) saves water in paddy rice production but could influence soil physical conditions and root growth. This study investigated the interaction between contrasting rice genotypes, soil structure and mechanical impedance influenced by hydraulic stresses typical of AWD.
Methods: Contrasting rice genotypes, IR64 and deeper-rooting Black Gora were grown in various soil conditions for 2 weeks. For the AWD treatments the soil was either maintained in a puddled state, equilibrated to −5 kPa (WET), or dried to −50 kPa and then rewetted at the water potential of −5 kPa (DRY-WET). There was an additional manipulated macropore structure treatment, i.e. the soil was broken into aggregates, packed into cores and equilibrated to −5 kPa (REPACKED). A flooded treatment (puddled soil remained flooded until harvest) was set as a control (FLOODED). Soil bulk density, penetration resistance and X-ray Computed Tomography (CT) derived macropore structure were measured. Total root length, root surface area, root volume, average diameter, and tip number were determined by WinRhizo.

Original language	English
Pages (from-to)	233-243
Number of pages	11
Journal	Plant and Soil
Volume	430
Issue number	1-2
Early online date	29 Jun 2018
DOIs	https://doi.org/10.1007/s11104-018-3715-5
Publication status	Published - Sept 2018

Bibliographical note

National Natural Science Foundation of China 41571130053
National Natural Science Foundation of China 41371235
Natural Environment Research Council NE/N007611/1
Biotechnology and Biological Sciences Research Council BB/N013201/1

Keywords

Rice roots
Genotype
Macropores
Mechanical impedance
Soil structure
X-ray CT

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Interaction between contrasting rice genotypes and soil physical conditions induced by hydraulic stresses typical of alternate wetting and drying irrigation of soil
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Cite this

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title = "Interaction between contrasting rice genotypes and soil physical conditions induced by hydraulic stresses typical of alternate wetting and drying irrigation of soil",

abstract = "Background and aims: Alternate wetting and drying (AWD) saves water in paddy rice production but could influence soil physical conditions and root growth. This study investigated the interaction between contrasting rice genotypes, soil structure and mechanical impedance influenced by hydraulic stresses typical of AWD.Methods: Contrasting rice genotypes, IR64 and deeper-rooting Black Gora were grown in various soil conditions for 2 weeks. For the AWD treatments the soil was either maintained in a puddled state, equilibrated to −5 kPa (WET), or dried to −50 kPa and then rewetted at the water potential of −5 kPa (DRY-WET). There was an additional manipulated macropore structure treatment, i.e. the soil was broken into aggregates, packed into cores and equilibrated to −5 kPa (REPACKED). A flooded treatment (puddled soil remained flooded until harvest) was set as a control (FLOODED). Soil bulk density, penetration resistance and X-ray Computed Tomography (CT) derived macropore structure were measured. Total root length, root surface area, root volume, average diameter, and tip number were determined by WinRhizo.",

keywords = "Rice roots, Genotype, Macropores, Mechanical impedance, Soil structure, X-ray CT",

author = "Huan Fang and Hu Zhou and Norton, {Gareth J} and Price, {Adam H} and Annette Raffan and Mooney, {Sacha J.} and Xinhua Peng and Hallett, {Paul D}",

note = "National Natural Science Foundation of China 41571130053 National Natural Science Foundation of China 41371235 Natural Environment Research Council NE/N007611/1 Biotechnology and Biological Sciences Research Council BB/N013201/1",

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AU - Fang, Huan

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AU - Norton, Gareth J

AU - Price, Adam H

AU - Raffan, Annette

AU - Mooney, Sacha J.

AU - Peng, Xinhua

AU - Hallett, Paul D

N1 - National Natural Science Foundation of China 41571130053 National Natural Science Foundation of China 41371235 Natural Environment Research Council NE/N007611/1 Biotechnology and Biological Sciences Research Council BB/N013201/1

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N2 - Background and aims: Alternate wetting and drying (AWD) saves water in paddy rice production but could influence soil physical conditions and root growth. This study investigated the interaction between contrasting rice genotypes, soil structure and mechanical impedance influenced by hydraulic stresses typical of AWD.Methods: Contrasting rice genotypes, IR64 and deeper-rooting Black Gora were grown in various soil conditions for 2 weeks. For the AWD treatments the soil was either maintained in a puddled state, equilibrated to −5 kPa (WET), or dried to −50 kPa and then rewetted at the water potential of −5 kPa (DRY-WET). There was an additional manipulated macropore structure treatment, i.e. the soil was broken into aggregates, packed into cores and equilibrated to −5 kPa (REPACKED). A flooded treatment (puddled soil remained flooded until harvest) was set as a control (FLOODED). Soil bulk density, penetration resistance and X-ray Computed Tomography (CT) derived macropore structure were measured. Total root length, root surface area, root volume, average diameter, and tip number were determined by WinRhizo.

AB - Background and aims: Alternate wetting and drying (AWD) saves water in paddy rice production but could influence soil physical conditions and root growth. This study investigated the interaction between contrasting rice genotypes, soil structure and mechanical impedance influenced by hydraulic stresses typical of AWD.Methods: Contrasting rice genotypes, IR64 and deeper-rooting Black Gora were grown in various soil conditions for 2 weeks. For the AWD treatments the soil was either maintained in a puddled state, equilibrated to −5 kPa (WET), or dried to −50 kPa and then rewetted at the water potential of −5 kPa (DRY-WET). There was an additional manipulated macropore structure treatment, i.e. the soil was broken into aggregates, packed into cores and equilibrated to −5 kPa (REPACKED). A flooded treatment (puddled soil remained flooded until harvest) was set as a control (FLOODED). Soil bulk density, penetration resistance and X-ray Computed Tomography (CT) derived macropore structure were measured. Total root length, root surface area, root volume, average diameter, and tip number were determined by WinRhizo.

KW - Rice roots

KW - Genotype

KW - Macropores

KW - Mechanical impedance

KW - Soil structure

KW - X-ray CT

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DO - 10.1007/s11104-018-3715-5

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JO - Plant and Soil

JF - Plant and Soil

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ER -

Interaction between contrasting rice genotypes and soil physical conditions induced by hydraulic stresses typical of alternate wetting and drying irrigation of soil

Abstract

Bibliographical note

Keywords

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