Changes in Soluble-N in Forest and Pasture Soils after Repeated Applications of Tannins and Related Phenolic Compounds

Halvorson, Jonathan J.; Gonzalez, Javier M.; Hagerman, Ann

doi:10.1155/2012/163054

Cited by 6 publications

(10 citation statements)

References 70 publications

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“…3). In the case of catechin, large differences from the water control did not result after either cool treatment step or subsequent hot extraction; consequently we conclude it does not interact with soil N. However, as observed in earlier work (Halvorson et al, 2012a(Halvorson et al, , 2012b, methyl gallate increased extraction of soluble N in treatment supernatants but subsequently decreased hot water-extractable soluble N, a pattern that implies it increases the efficacy of the initial extraction process. At this time, we do not have sufficient data to identify the mechanisms responsible for this increase of efficacy but the combined net effect was not different from water.…”

Section: Final Effects On Soluble Nitrogensupporting

confidence: 76%

“…In addition, differences observed among soil orders could reflect variations in the chemical composition of soil organic matter associated with land use or pedogenic lineage. Halvorson et al (2012b) found phenolic treatments reduced net soluble N in pasture soil significantly more than in soil from adjacent woodlands.…”

Section: Final Effects On Soluble Nitrogenmentioning

confidence: 79%

“…However, despite having the lowest retention by soil, gallic acid decreased soluble N to levels similar to tannic acid or PGG. We postulate that the decrease seen with gallic acid could be due, in part, to redox reactions with metals, especially Mn, in the soil (Halvorson et al, 2012b;Hem, 1965;Pohlman and McColl, 1989). Insoluble Mn(IV) could be reduced to the soluble Mn(II) as gallic acid oxidized to quinones and semi-quinones that formed "humic-like" polymers with amino-containing compounds and were retained in the soil matrix.…”

Section: Final Effects On Soluble Nitrogenmentioning

confidence: 97%

“…We hypothesized that the patterns we observed for pasture and forest sites from West Virginia, USA (Halvorson et al, 2012b;Halvorson et al, 2011;Halvorson et al, 2009) would be reflected consistently in samples acquired from across the United States and Canada representing a wide variety of land uses and differing management styles. We treated samples of these soils with solutions containing chemically well-defined hydrolyzable and condensed tannins, (polymers) and related non-tannin phenolic substances (monomers).…”

mentioning

confidence: 96%

“…However, their impacts may be influenced by specific tannin and soil characteristics and remain to be fully elucidated (Kraus et al, 2003b, Schmidt et al, 2012, Smolander et al, 2012. Our earlier work focused on understanding the initial effects of tannins and related non-tannin phenolics on soil processes and characteristics related to management of soil organic matter and nutrient cycling (Halvorson et al, 2012a;Halvorson and Gonzalez, 2008;Halvorson et al, 2012b;Halvorson et al, 2011;Halvorson et al, 2009;Schmidt et al, 2012). When added to soil, tannic acid affected the recovery and composition of Bradford-reactive soil protein, associated with glomalin.…”

mentioning

confidence: 99%

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Retention of Tannin‐C is Associated with Decreased Soluble Nitrogen and Increased Cation Exchange Capacity in a Broad Range of Soils

Halvorson

Gonzalez

Hagerman

2013

Soil Science Soc of Amer J

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Phenolic compounds, called tannins, can be retained by soil and affect soluble N but have been studied in only a few soil types. Surface samples (0–10 cm), collected from the United States and Canada, were treated with water (Control) or solutions containing procyanidin, catechin, ß‐1,2,3,4,6‐pentagalloyl‐O‐D‐glucose (PGG), tannic acid, gallic acid, or methyl gallate. Soluble C and N in treatment supernatants and after incubation (16 h, 80°C) were measured to determine retention of treatment C and effects on soluble N and cation exchange capacity (CEC). Retention varied significantly with treatment (T) and soil order (S) and was greatest for PGG > tannic acid > procyanidin > catechin > methyl gallate > gallic acid and in Alfisols, Aridisols and Mollisols compared Ultisols. However, differences among soil orders were observed only for strongly retained compounds (T × S, P < 0.001). Extraction of soluble N was decreased by gallic acid and tannins, especially PGG, but unaffected by methyl gallate or catechin. All treatments decreased soluble N from Aridisols while Entisols were less affected by tannins (T × S, P < 0.01). Soil CEC was significantly increased by tannins but unaffected by other compounds. However, CEC increased more in Aridisols than in Mollisols or Ultisols and treatment effects were small and unvarying in Ultisols (T × S, P < 0.001). Changes to both soluble N and CEC were linearly related with retention of treatment C. Tannins produced effects associated with improved soil quality on a broad range of soils and may have a role in land management.

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Section: Final Effects On Soluble Nitrogensupporting

confidence: 76%

Section: Final Effects On Soluble Nitrogenmentioning

confidence: 79%

Section: Final Effects On Soluble Nitrogenmentioning

confidence: 97%

mentioning

confidence: 96%

mentioning

confidence: 99%

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Retention of Tannin‐C is Associated with Decreased Soluble Nitrogen and Increased Cation Exchange Capacity in a Broad Range of Soils

Halvorson

Gonzalez

Hagerman

2013

Soil Science Soc of Amer J

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Effects of activated charcoal and tannin added to compost and to soil on carbon dioxide, nitrous oxide and ammonia volatilization

Jordan

Předotová

Ingold

et al. 2015

J. Plant Nutr. Soil Sci.

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Given high mineralization rates of soil organic matter addition of organic fertilizers such as compost and manure is a particularly important component of soil fertility management under irrigated subtropical conditions as in Oman. However, such applications are often accompanied by high leaching and volatilization losses of N. Two experiments were therefore conducted to quantify the effects of additions of activated charcoal and tannin either to compost in the field or directly to the soil. In the compost experiment, activated charcoal and tannins were added to compost made from goat manure and plant material at a rate of either 0.5 t activated charcoal ha -1 , 0.8 t tannin extract ha -1 , or 0.6 t activated charcoal and tannin ha -1 in a mixed application. Subsequently, emissions of CO 2 , N 2 O, and NH 3 volatilization were determined for 69 d of composting. The results were verified in a 20-d soil incubation experiment in which C and N emissions from a soil amended with goat manure (equivalent to 135 kg N ha -1 ) and additional amendments of either 3 t activated charcoal ha -1 , or 2 t tannin extract ha -1 , or the sum of both additives were determined. While activated charcoal failed to affect the measured parameters, both experiments showed that peaks of gaseous CO 2 and N emission were reduced and/or occurred at different times when tannin was applied to compost and soil. Application of tannins to compost reduced cumulative gaseous C emissions by 40% and of N by 36% compared with the non-amended compost. Tannins applied directly to the soil reduced emission of N 2 O by 17% and volatilization of NH 3 by 51% compared to the control. However, emissions of all gases increased in compost amended with activated charcoal, and the organic C concentration of the activated charcoal amended soil increased significantly compared to the control. Based on these results, tannins appear to be a promising amendment to reduce gaseous emissions from composts, particularly under subtropical conditions.

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Macronutrients and metals released from soils by solutions of naturally occurring phenols

Schmidt

Halvorson

Hagerman

et al. 2017

J. Plant Nutr. Soil Sci.

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Phenolic compounds produced by plants enter the soil by leaching and litter decomposition. The goal of this work is to determine the effect of phenolic compounds on solubility of plant macronutrients and metals in agroforestry systems. Soils from forest and pasture systems were repeatedly extracted with water (control) or phenolic solutions and then compared to a Mehlich 3 reference. The phenolics were aqueous solutions of tannic acid or β–1,2,3,4,6‐penta‐O‐galloyl‐D‐glucose (PGG) (hydrolyzable tannins), procyanidin (condensed tannin), or small phenolics catechin, gallic acid, or methyl gallate. The concentration of the macronutrients Ca, Mg, K, P, and S, and the metals Fe, Al, Mn, and Zn in the supernatants was determined by inductively‐coupled plasma spectroscopy. Cumulative extraction of macronutrients was generally similar to or less than the amount obtained by the Mehlich 3 extraction with the lowest recoveries obtained with the water control, PGG, and procyanidin. Metals tended to be somewhat more extractable from forest soil, especially with gallic acid, tannic acid or PGG treatments. Three mechanisms affected extraction of analytes by phenol‐containing solutions: (1) pH‐driven dissolution (Ca and Mg), (2) chelation of the metal (Al) by the polyphenol, or (3) reduction of the metal (Fe and Mn). Relatively low extraction of nutrients by some polyphenols is attributed to the tendency of some phenols to sorb to soil. This study demonstrates that tannins and related compounds change the solubility of macronutrients and metals in soils by a complex process that is not easily predictable from simple chemical properties of the phenolics.

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Changes in Soluble-N in Forest and Pasture Soils after Repeated Applications of Tannins and Related Phenolic Compounds

Cited by 6 publications

References 70 publications

Retention of Tannin‐C is Associated with Decreased Soluble Nitrogen and Increased Cation Exchange Capacity in a Broad Range of Soils

Retention of Tannin‐C is Associated with Decreased Soluble Nitrogen and Increased Cation Exchange Capacity in a Broad Range of Soils

Effects of activated charcoal and tannin added to compost and to soil on carbon dioxide, nitrous oxide and ammonia volatilization

Macronutrients and metals released from soils by solutions of naturally occurring phenols

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