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Mechanisms of iron reduction and pho...

Wilmoth, Jared L.

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Mechanisms of iron reduction and phosphorus solubilization in an intermittently wet pasture soil.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Mechanisms of iron reduction and phosphorus solubilization in an intermittently wet pasture soil./
Author:	Wilmoth, Jared L.
Description:	125 p.
Notes:	Source: Masters Abstracts International, Volume: 48-02, page: 1049.
Contained By:	Masters Abstracts International48-02.
Subject:	Biology, Microbiology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1471824
ISBN:	9781109435467

Mechanisms of iron reduction and phosphorus solubilization in an intermittently wet pasture soil.
Wilmoth, Jared L.

Mechanisms of iron reduction and phosphorus solubilization in an intermittently wet pasture soil. - 125 p.

Source: Masters Abstracts International, Volume: 48-02, page: 1049.

Thesis (M.S.)--West Virginia University, 2009.

Microbial Fe-reduction in pasture soils may be of agronomic importance, because it has been shown to influence P cycling. The present study investigated the behavior of Fe and P in an intermittently wet, Appalachian pasture soil during a 42 day anaerobic incubation. Native humic acid (HA) extracted from the sampling location and anthraquinone-2,6-disulfonic acid (AQDS) were used in the experiment to determine their electron-mediating effects on Fe(III) reduction and P solubilization over time. Extracted HA and the International Humic Substance Society (IHSS) Elliott Soil HA standard were compared using 13C-NMR, FT-IR, SEM, and CHNS analysis. Soil samples treated with 1.24 g native HA/kg dry soil and 0.2 g AQDS/kg dry soil displayed the highest, most similar, solubilized P rates during the anaerobic incubation. However, the soil alone, without an added electron mediator, was able to release biologically significant concentrations of P to solution at Eh values between 0 and -200 mV. Total soluble P increases were strongly related to soluble Fe(II) increases over time. Field Eh measurements, relative to naturally occurring seasonal changes, are also reported. The purpose of this research was to further define the mechanisms of Fe and P cycling in temperate, pasture soils.

ISBN: 9781109435467Subjects--Topical Terms:

1017734
Biology, Microbiology.

Mechanisms of iron reduction and phosphorus solubilization in an intermittently wet pasture soil.
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020 $a 9781109435467
035 $a (UMI)AAI1471824
035 $a AAI1471824
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100 1 $a Wilmoth, Jared L. $3 1678676
245 1 0 $a Mechanisms of iron reduction and phosphorus solubilization in an intermittently wet pasture soil.
300 $a 125 p.
500 $a Source: Masters Abstracts International, Volume: 48-02, page: 1049.
500 $a Adviser: Louis M. McDonald.
502 $a Thesis (M.S.)--West Virginia University, 2009.
520 $a Microbial Fe-reduction in pasture soils may be of agronomic importance, because it has been shown to influence P cycling. The present study investigated the behavior of Fe and P in an intermittently wet, Appalachian pasture soil during a 42 day anaerobic incubation. Native humic acid (HA) extracted from the sampling location and anthraquinone-2,6-disulfonic acid (AQDS) were used in the experiment to determine their electron-mediating effects on Fe(III) reduction and P solubilization over time. Extracted HA and the International Humic Substance Society (IHSS) Elliott Soil HA standard were compared using 13C-NMR, FT-IR, SEM, and CHNS analysis. Soil samples treated with 1.24 g native HA/kg dry soil and 0.2 g AQDS/kg dry soil displayed the highest, most similar, solubilized P rates during the anaerobic incubation. However, the soil alone, without an added electron mediator, was able to release biologically significant concentrations of P to solution at Eh values between 0 and -200 mV. Total soluble P increases were strongly related to soluble Fe(II) increases over time. Field Eh measurements, relative to naturally occurring seasonal changes, are also reported. The purpose of this research was to further define the mechanisms of Fe and P cycling in temperate, pasture soils.
590 $a School code: 0256.
650 4 $a Biology, Microbiology. $3 1017734
650 4 $a Biogeochemistry. $3 545717
650 4 $a Agriculture, Soil Science. $3 1017824
650 4 $a Chemistry, Biochemistry. $3 1017722
650 4 $a Chemistry, Agricultural. $3 1021829
690 $a 0410
690 $a 0425
690 $a 0481
690 $a 0487
690 $a 0749
710 2 $a West Virginia University. $3 1017532
773 0 $t Masters Abstracts International $g 48-02.
790 1 0 $a McDonald, Louis M., $e advisor
790 $a 0256
791 $a M.S.
792 $a 2009
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1471824