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Microbial transport of aerated compost tea organisms in clay loam and sandy loam – A soil column study.

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Title: Microbial transport of aerated compost tea organisms in clay loam and sandy loam – A soil column study.
Authors: Haller, Henrik1 henrik.haller@miun.se, Jonsson, Anders1, Rayo, Katia Montenegro2, López, Anielka Dávila2
Source: International Biodeterioration & Biodegradation. Jan2016, Vol. 106, p10-15. 6p.
Subjects: Compost tea, Clay loam soils, Sandy loam soils, Soil microbiology, Soil remediation, Humus
Abstract: Soil bioaugmentation is a promising approach with applications in agriculture and in bioremediation of polluted soil. One way of supplying microorganisms to the soil that has received increasing attention during the last decade is by the addition of compost teas. The success of such strategies depends on whether the organisms are capable of migrating through the soil and reaching its target, i.e. the pollutants or soil pathogens. The structural conditions of the soil affect the microbial migration rate and this study aims to determine the migration rates of microorganisms found in aerated compost tea through both a sandy loam and a clay loam in soil columns. A considerably higher proportion of the microorganisms from the aerated compost tea were deposited at 2 cm in the sandy loam compared to the clay loam. Microbial deposition was concentrated to the top 2 cm in the sandy loam and then decreased abruptly at 10 cm whereas the clay loam presented an irregular pattern. Despite a favourable particle size distribution for microbial transport, the sandy loam retained a greater proportion of the microorganisms present in the aerated compost tea in the top 2 cm, presumably because the lower bulk density and higher soil organic matter in the clay loam aided transport and growth of microorganisms. The limited migration of aerated compost tea microorganisms in sandy soil suggests that its efficiency for bioremediation or pathogen control may be limited below 2 cm depth in similar soils. Our results indicate that in less dense soil with higher soil organic matter content the efficiency may be higher. [ABSTRACT FROM AUTHOR]
Copyright of International Biodeterioration & Biodegradation is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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  Label: Title
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  Data: Microbial transport of aerated compost tea organisms in clay loam and sandy loam – A soil column study.
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  Data: <searchLink fieldCode="AR" term="%22Haller%2C+Henrik%22">Haller, Henrik</searchLink><relatesTo>1</relatesTo><i> henrik.haller@miun.se</i><br /><searchLink fieldCode="AR" term="%22Jonsson%2C+Anders%22">Jonsson, Anders</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Rayo%2C+Katia+Montenegro%22">Rayo, Katia Montenegro</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22López%2C+Anielka+Dávila%22">López, Anielka Dávila</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22International+Biodeterioration+%26+Biodegradation%22">International Biodeterioration & Biodegradation</searchLink>. Jan2016, Vol. 106, p10-15. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Compost+tea%22">Compost tea</searchLink><br /><searchLink fieldCode="DE" term="%22Clay+loam+soils%22">Clay loam soils</searchLink><br /><searchLink fieldCode="DE" term="%22Sandy+loam+soils%22">Sandy loam soils</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+microbiology%22">Soil microbiology</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+remediation%22">Soil remediation</searchLink><br /><searchLink fieldCode="DE" term="%22Humus%22">Humus</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Soil bioaugmentation is a promising approach with applications in agriculture and in bioremediation of polluted soil. One way of supplying microorganisms to the soil that has received increasing attention during the last decade is by the addition of compost teas. The success of such strategies depends on whether the organisms are capable of migrating through the soil and reaching its target, i.e. the pollutants or soil pathogens. The structural conditions of the soil affect the microbial migration rate and this study aims to determine the migration rates of microorganisms found in aerated compost tea through both a sandy loam and a clay loam in soil columns. A considerably higher proportion of the microorganisms from the aerated compost tea were deposited at 2 cm in the sandy loam compared to the clay loam. Microbial deposition was concentrated to the top 2 cm in the sandy loam and then decreased abruptly at 10 cm whereas the clay loam presented an irregular pattern. Despite a favourable particle size distribution for microbial transport, the sandy loam retained a greater proportion of the microorganisms present in the aerated compost tea in the top 2 cm, presumably because the lower bulk density and higher soil organic matter in the clay loam aided transport and growth of microorganisms. The limited migration of aerated compost tea microorganisms in sandy soil suggests that its efficiency for bioremediation or pathogen control may be limited below 2 cm depth in similar soils. Our results indicate that in less dense soil with higher soil organic matter content the efficiency may be higher. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Biodeterioration & Biodegradation is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.ibiod.2015.10.002
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      – Code: eng
        Text: English
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        PageCount: 6
        StartPage: 10
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      – SubjectFull: Compost tea
        Type: general
      – SubjectFull: Clay loam soils
        Type: general
      – SubjectFull: Sandy loam soils
        Type: general
      – SubjectFull: Soil microbiology
        Type: general
      – SubjectFull: Soil remediation
        Type: general
      – SubjectFull: Humus
        Type: general
    Titles:
      – TitleFull: Microbial transport of aerated compost tea organisms in clay loam and sandy loam – A soil column study.
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            NameFull: Haller, Henrik
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            NameFull: Jonsson, Anders
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            NameFull: Rayo, Katia Montenegro
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            NameFull: López, Anielka Dávila
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              Text: Jan2016
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              Y: 2016
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