Effects of Organic Matter, Flooding Time, and Temperature on the Dissolution of Iron and Manganese from Soil in situ

Meek, B. D.; MacKenzie, A. J.; Grass, L. B.

doi:10.2136/sssaj1968.03615995003200050018x

Cited by 49 publications

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“…The amounts of Fe associated with organic matter were in the range between 229 and 1427 mg kg" 1 soil and increased with increasing organic C content. These data are in agreement with the results published elsewhere (Shuman, 1988;Elliot and Blay, 1975;Meek et al, 1968). The characteristic feature is that organic bound Fe was found in each horizon of analysed soils.…”

Section: Resultssupporting

confidence: 93%

Status of iron in alluvial soils from the wisla river valley, Poland

Dąbkowska-Naskręt

2000

Journal of Plant Nutrition

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Iron is the essential element for plant growth. Although most soils contain adequate total Fe, amounts that are available to plants might be inadequate. Plant available Fe depends on factors such as Fe species in the soil and the ability of plant roots to make Fe compounds soluble. In this paper, forms and mobility of Fe in soils formed from Wisla river sediments were evaluated. The soils of studied area although rich in total Fe, contain insufficient concentration of labile Fe, a plant available fraction. Sequential extraction procedure was used for the speciation of Fe fractions. Data obtained show very low Fe concentration in fractions of plant available Fe such as soluble and exchangeable Fe (0.5 -2.2 mg kg -1 soil). Most of the Fe was found in the Fe oxide (over 12% of the total) and residual, fixed in silicate structures, fractions (more than 80% of the total). Substantial amounts of Fe is associated with soil organic matter. Iron associated with manganese oxides and acid soluble Fe compounds are present in minor amounts. 1549

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Section: Resultssupporting

confidence: 93%

Status of iron in alluvial soils from the wisla river valley, Poland

Dąbkowska-Naskręt

2000

Journal of Plant Nutrition

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“…It is not clear if this additional process operates only in the short‐term. Biochar may promote or inhibit microbial activity that influences Mn availability (Meek et al, 1968; Abou‐Shanab et al, 2003) via changes in microbial populations and activity (Khodadad et al, 2011) or mycorrhizal root colonization (Solaiman et al, 2010). These shifts may result from biochar effects on physical soil properties (e.g., soil water retention) (Glaser et al, 2002; Laird et al, 2010) or release or sorption of microorganism‐inhibiting or ‐promoting chemicals (Uusitalo et al, 2008; Clough and Condron, 2010; Deenik et al, 2010; Spokas et al, 2010) or because biochar provides additional habitat or refugia for organisms (Pietikainen et al, 2000; Warnock et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Biochar and Manure Affect Calcareous Soil and Corn Silage Nutrient Concentrations and Uptake

2012

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Carbon‐rich biochar derived from the pyrolysis of biomass can sequester atmospheric CO2, mitigate climate change, and potentially increase crop productivity. However, research is needed to confirm the suitability and sustainability of biochar application to different soils. To an irrigated calcareous soil, we applied stockpiled dairy manure (42 Mg ha−1 dry wt) and hardwood‐derived biochar (22.4 Mg ha−1), singly and in combination with manure, along with a control, yielding four treatments. Nitrogen fertilizer was applied when needed (based on preseason soil test N and crop requirements) in all plots and years, with N mineralized from added manure included in this determination. Available soil nutrients (NH4–N; NO3–N; Olsen P; and diethylenetriaminepentaacetic acid–extractable K, Mg, Na, Cu, Mn, Zn, and Fe), total C (TC), total N (TN), total organic C (TOC), and pH were evaluated annually, and silage corn nutrient concentration, yield, and uptake were measured over two growing seasons. Biochar treatment resulted in a 1.5‐fold increase in available soil Mn and a 1.4‐fold increase in TC and TOC, whereas manure produced a 1.2‐ to 1.7‐fold increase in available nutrients (except Fe), compared with controls. In 2009 biochar increased corn silage B concentration but produced no yield increase; in 2010 biochar decreased corn silage TN (33%), S (7%) concentrations, and yield (36%) relative to controls. Manure produced a 1.3‐fold increase in corn silage Cu, Mn, S, Mg, K, and TN concentrations and yield compared with the control in 2010. The combined biochar‐manure effects were not synergistic except in the case of available soil Mn. In these calcareous soils, biochar did not alter pH or availability of P and cations, as is typically observed for acidic soils. If the second year results are representative, they suggest that biochar applications to calcareous soils may lead to reduced N availability, requiring additional soil N inputs to maintain yield targets.

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“…A value of + 242 mV was added to the measured potential to convert readings from the calomel reference electrode to a hydrogen reference electrode (Meek et al, 1968;Mann and Stolzy, 1972). maintained at a 7.5 cm depth by use of a Marriot bottle assembly filled with tap water.…”

Section: Redox Measurementsmentioning

confidence: 99%

Transformations and Transport of NH₄⁺‐N in a Flooded Soil

Bilal

1977

J Plant Nutrition & Soil

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Umbildung und Transport von NH4‐N in einem überfluteten Boden Transport und Transformation von gedüngtem NH4+N wurden in einer überfluteten Bodensäule untersucht, um Aussagen über die Beeinflussung der Wasserqualität durch die Stickstoffdüngung bei Reisböden machen zu können. Am ersten Tag nach der Düngerausbringung erreichte der NH4+‐ Gehalt im Überflutungswasser und in 1,2 cm Bodentiefe (oxidierter Bodenhorizont) Höchstwerte, die mit zunehmender Versuchsdauer bis auf < 1 ppm nach 10 bzw. 16 Tagen abnahmen. In größerer Bodentiefe konnten keine Veränderungen in der NH4+‐Konzentration der Bodenlösung festgestellt werden. Die Gehalte lagen immer unter 1 ppm. Im Überflutungswasser und in der Bodenlösung des oxidierten Oberflächenhorizontes führten Nitrifikationsvorgänge zu Veränderungen der NH4+‐Gehalte. Höchstgehalte an NO2− und NO3− traten etwa 7 bzw. 10 Tage nach der NH4+‐Ausbringung auf. In größerer Bodentiefe konnten Veränderungen in der NO2− und NO3−‐Lösungskonzentration während der Versuchszeit nicht festgestellt werden. Aus den Gehalten an gesamten anorganischem Stickstoff in der Lösungsphase folgt, daß erhöhte N‐Konzentrationen nur im Überflutungswasser und in einer Bodentiefe von 1,2cm auftreten. Die beobachtete Abnahme der N‐Gehalte im Verlauf einer 4‐wöchigen Untersuchungsperiode werden auf Denitrifikations‐, Immobilisierungs‐ und Fixierungsvorgänge zurückgeführt.

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Effects of Organic Matter, Flooding Time, and Temperature on the Dissolution of Iron and Manganese from Soil in situ

Cited by 49 publications

References 0 publications

Status of iron in alluvial soils from the wisla river valley, Poland

Status of iron in alluvial soils from the wisla river valley, Poland

Biochar and Manure Affect Calcareous Soil and Corn Silage Nutrient Concentrations and Uptake

Transformations and Transport of NH₄⁺‐N in a Flooded Soil

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Effects of Organic Matter, Flooding Time, and Temperature on the Dissolution of Iron and Manganese from Soil in situ

Cited by 49 publications

References 0 publications

Status of iron in alluvial soils from the wisla river valley, Poland

Status of iron in alluvial soils from the wisla river valley, Poland

Biochar and Manure Affect Calcareous Soil and Corn Silage Nutrient Concentrations and Uptake

Transformations and Transport of NH4+‐N in a Flooded Soil

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Transformations and Transport of NH₄⁺‐N in a Flooded Soil