Rapid microbial phosphorus immobilization dominates gross phosphorus fluxes in a grassland soil with low inorganic phosphorus availability

Bünemann, Else K.; Oberson, Astrid; Liebisch, Frank; Keller, F.; Annaheim, Kathrin E.; Huguenin‐Elie, Olivier; Frossard, Emmanuel

doi:10.1016/j.soilbio.2012.04.012

Cited by 159 publications

(107 citation statements)

References 35 publications

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“…We had expected that P would be released from the surface of Fe minerals when they were reduced; however, there was no evidence to support this. We speculate that any released P was either re-sorbed onto Al(OH) 3 , migrated to the soil surface where it re-precipitated with Fe or was immobilized by the growing microbial community (Bünemann et al 2012;Damon et al 2014). All of Bold indicates significant at p < 0.05 C control without flood, F flood, NR non-residue application, MR maize residue application (8 Mg ha −1 ), Anaerobes anaerobic bacteria, Arb.…”

Section: Discussion Soil Solution Chemistrymentioning

confidence: 99%

Crop residues exacerbate the negative effects of extreme flooding on soil quality

et al. 2017

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Extreme flood events are predicted to have a negative impact on soil quality. Currently, there is a lack of information about the effect of agricultural practices on soil functioning and microbial processes under these events. We hypothesized that the impact of flooding on soil quality will be exacerbated when crop residues are present in the soil as they will induce more extreme anaerobicity. A spring extreme flood event (10°C, 9 weeks) was simulated in mesocosms containing an arable sandy-loam soil low in nutrients. The main treatments were (1) with and without flooding and (2) with and without maize residue addition (8 Mg ha −1 ). We monitored changes in soil chemical quality indicators (e.g. pH, salinity, Fe 3+ , P, C, NH 4 + , NO 3 − and organic N), greenhouse gas (GHG) emissions (CO 2 , CH 4 , N 2 O) and soil microbial community composition (PLFAs) during a prolonged flood period (9 weeks) and an 8-week Brecovery^period after flooding. In comparison to the other treatments, flooding in the presence of crop residues resulted in a dramatic drop in soil redox potential. This was associated with the enhanced release of Fe and C into solution and an increase in CH 4 emissions. In contrast, maize residues reduced potential nitrate losses and N 2 O emissions, possibly due to complete denitrification and microbial N immobilization. Both flooding and maize residues stimulated microbial growth and promoted a shift in microbial community composition. Following floodwater removal, most of the soil quality indicators returned to the levels of the control treatment within 5 weeks. After this short recovery phase, no major impact of flooding could be observed on plant growth (maize pot-grown). Overall, we conclude that both extreme flooding and management regime negatively impact upon a range of soil quality indicators (e.g. redox, GHG emissions); however, the soil showed high resilience and recovered quickly after floodwater removal. Further work is required to investigate the impact of repeated extreme flood events on soil quality and function over longer timescales.

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Section: Discussion Soil Solution Chemistrymentioning

confidence: 99%

Crop residues exacerbate the negative effects of extreme flooding on soil quality

et al. 2017

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“…Cross and Schlesinger, 1995;Johnson et al, 2003;Achat et al, 2009). Mineralization of non-microbial organic P and remineralization of microbial P (Achat et al, 2010;Richardson and Simpson, 2011;Bünemann et al, 2012) are assumed to play a significant role in P availability in these ecosystems (Walbridge et al, 1991;Attiwill and Adams, 1993). However, decomposition processes generally depend on microbiological activity as well as organic matter quality (Ushio et al, 2010;Voriskova et al, 2011).…”

Section: L Achat Et Al: Phosphorus Status Of Siberian Forest Soilsmentioning

confidence: 99%

Phosphorus status of soils from contrasting forested ecosystems in southwestern Siberia: effects of microbiological and physicochemical properties

et al. 2013

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The Siberian forest is a tremendous repository of terrestrial organic carbon (C), which may increase owing to climate change, potential increases in ecosystem productivity and hence C sequestration. Phosphorus (P) availability could limit the C sequestration potential, but tree roots may mine the soil deep to increase access to mineral P. Improved understanding and quantification of the processes controlling P availability in surface and deep soil layers of Siberian forest ecosystems are thus required. The objectives of the present study were to (1) evaluate P status of surface and deep soil horizons from different forest plots in southwestern Siberia and (2) assess the effects of physicochemical soil properties, microbiological activity and decomposition processes on soil P fractions and availability. Results revealed high concentrations of total P (879–1042 mg kg<sup>−1</sup> in the surface mineral soils) and plant-available phosphate ions. In addition, plant-available phosphate ions accumulated in the subsoil, suggesting that deeper root systems may mine sufficient available P for the trees and the potentially enhanced growth and C sequestration, may not be P-limited. Because the proportions of total organic P were large in the surface soil layers (47–56% of total P), we concluded that decomposition processes may play a significant role in P availability. However, microbiological activity and decomposition processes varied between the study plots and higher microbiological activity resulted in smaller organic P fractions and consequently larger available inorganic P fractions. In the studied Siberian soils, P availability was also controlled by the physicochemical soil properties, namely Al and Fe oxides and soil pH

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“…Thus, Conte et al (2002) and Rheinheimer et al (2008) affirm that stimulating the microbial biomass of the soil by adding carbon (C) and P could increase the immobilized P content in the biomass, preventing its adsorption to the soil, and increasing the efficiency of phosphate fertilization. This increased efficiency would occur due to the dynamism of the biomass in P recycling because studies show that after application of soluble phosphate fertilizers, there is rapid microbial immobilization of the added 2290 FRANCISCO A. MORAIS and LUCIANO C. GATIBONI inorganic P (Bünemann et al 2012). Therefore, after the death of the microorganisms, the microbial P would be mineralized and gradually released in the soil solution.…”

Section: Introductionmentioning

confidence: 99%

Phosphorus availability and microbial immobilization in a Nitisol with the application of mineral and organo-mineral fertilizers

Morais

Gatiboni

2015

An. Acad. Bras. Ciênc.

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The aim of this study was to evaluate P availability, P and C contained in the microbial biomass, and enzymatic activity (acid phosphatases and β-glucosidases) in a Nitisol with the application of mineral and organo-mineral fertilizers. The experiment was performed in a protected environment with control over air temperature and soil moisture. The experimental design was organized in a "5 x 4" factorial arrangement with five sources of P and four times of soil incubation. The sources were: control (without P), triple superphosphate, diammonium phosphate, natural Arad reactive rock phosphate, and organo-mineral fertilizer. The experimental units consisted of PVC columns filled with agricultural soil. The columns were incubated and broken down for analysis at 1, 20, 40, and 60 days after application of the fertilizers. In each column, samples were taken at the layers of 0-2.5, 2.5-5.0, and 5.0-15.0 cm below the zone of the fertilizers. The application of soluble phosphates and organo-mineral fertilizer temporarily increased P availability in the zone near the fertilizers (0-2.5 cm), with maximum availability occurring at approximately 32 days. Microbial immobilization showed behavior similar to P availability, and the greatest immobilizations occurred at approximately 30 days. The organo-mineral fertilizer was not different from soluble phosphates.

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Rapid microbial phosphorus immobilization dominates gross phosphorus fluxes in a grassland soil with low inorganic phosphorus availability

Cited by 159 publications

References 35 publications

Crop residues exacerbate the negative effects of extreme flooding on soil quality

Crop residues exacerbate the negative effects of extreme flooding on soil quality

Phosphorus status of soils from contrasting forested ecosystems in southwestern Siberia: effects of microbiological and physicochemical properties

Phosphorus availability and microbial immobilization in a Nitisol with the application of mineral and organo-mineral fertilizers

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