Phosphorus Transformations under Reduction in Long-term Manured Soils

Ajmone-Marsan, Franco; Côté, Denis; Simard, R. R.

doi:10.1007/s11104-005-5929-6

Cited by 44 publications

(31 citation statements)

References 46 publications

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“…Under prolonged flooded conditions, decrease in redox potential (Eh) and associated pH changes may play a direct or indirect role in controlling P sorption and release. Anaerobic conditions can increase P availability in soils and accelerate P loss to water bodies (Ajmone‐Marsan et al, 2006; Hoffman et al, 2009; Kröger et al, 2012; Scalenghe et al, 2012).…”

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confidence: 99%

Phosphorus Mobilization from Manure-Amended and Unamended Alkaline Soils to Overlying Water during Simulated Flooding

et al. 2015

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Anaerobic soil conditions resulting from flooding often enhance release of phosphorus (P) to overlying water. Enhanced P release is well documented for flooded acidic soils; however, there is little information for flooded alkaline soils. We examined the effect of flooding and anaerobic conditions on P mobilization using 12 alkaline soils from Manitoba that were either unamended or amended with solid cattle manure. Pore water and floodwater were analyzed over 8 wk of simulated flooding for dissolved reactive P (DRP), Ca, Mg, Fe, and Mn. As expected, manured soils had significantly greater pore and floodwater DRP concentrations than unamended. Flooding increased pore water DRP concentrations significantly in all soils and treatments except one manured clay in which concentrations increased initially and then decreased. Floodwater DRP concentrations increased significantly by two-to 15-fold in 10 soils regardless of amendment treatment but remained relatively stable in the two soils with greatest clay content. Phosphorus release at the onset of flooding was associated with the release of Ca, Mg, and Mn, suggesting that P release may be controlled by the dissolution of Mg and Ca phosphates and reductive dissolution of Mn phosphates. Thereafter, P release was associated with release of Fe, suggesting the reductive dissolution of Fe phosphates. Differences in pore water and floodwater DRP concentrations among soils and amendment treatments and the high variability in P mobilization from pore water to floodwater among soils indicate the need to further investigate chemical reactions responsible for P release and mobility under anaerobic conditions.

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confidence: 99%

Phosphorus Mobilization from Manure-Amended and Unamended Alkaline Soils to Overlying Water during Simulated Flooding

et al. 2015

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“…A recent publication with Re´gis as a posthumous coauthor confirmed the nature of his observations and concerns, showing a three to twenty fold increase in water soluble P in manured soils from Quebec after 2 weeks of submergence (Ajmone-Marsan et al 2006). Sequential extraction analyses showed that the increase in soluble P came from all P fractions in soil, including those fractions usually regarded as recalcitrant under aerobic conditions.…”

Section: Grant Et Al * a Tribute To Regis Simard 139mentioning

confidence: 70%

Integrating knowledge of nutrient forms and dynamics into improved nutrient management practices: Atribute to Régis Simard

Grant¹,

Ziadi²,

Gagnon³

et al. 2009

Can. J. Soil. Sci.

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Régis Simard and his colleagues developed a research program focussing on the agronomic and environmental impacts of nutrients in agricultural systems. The success of this program resulted from an integrated approach, linking assessment of nutrient availability to an understanding of nutrient dynamics in the soil, and applying this understanding to development of improved management practices for a variety of nutrient sources. Research into nutrient availability conducted by Régis and his co-workers led to improvements in quantification of nutrient supply, using traditional soil analysis with batch chemical extraction as well as ionic exchange membranes (IEMs) and electro-ultrafiltration (EUF). Ion exchange membranes are now used as a tool in routine soil fertility assessments and in agronomic and environmental research to study nutrient ion release rates. Additionally, intensive analytical techniques, such as sequential extraction and X-ray absorption near-edge structure (XANES) were developed and used to characterize the forms and relative availability of soil nutrients for plant uptake or environmental effects. Characterization of nutrient pools improved understanding of nutrient dynamics in the soil, allowing a more accurate assessment of the agronomic value and environmental risk of nutrients applied to agricultural systems. Building on this knowledge, Régis and his colleagues developed improved methods of utilizing manures, composts, paper mill sludge (PMS) and liming by-products, effectively diverting nutrients from the waste stream into a resource for crop production. This paper describes the contributions of Régis and his colleagues to the improvement of agronomically and environmentally sustainable nutrient management practices, based on an integrated research approach that provided a clear understanding nutrient availability and soil nutrient dynamics. Key words: Chemical extraction, integrated nutrient management, ion exchange membranes, paper mill sludge, soil phosphorus, soil potassium

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“…In contrast, organically bound P increases with the lowering of redox potential and accounts for a greater fraction of total P; accumulation of organic P relatively to inorganic P helps to limit overall P loss (e.g., Reddy and Rao, 1983;Martin et al, 1997;Ruiz et al, 1997;Sallade and Sims, 1997;Vadas and Sims, 1998;Turner and Haygarth, 2001;Shenker et al, 2005;Castillo and Wright, 2008). The loss of inorganic P sorption surfaces starts in soils with moderate reduction (Miller et al, 2001) and later the soil solutions contain enough Fe to effectively retain the released P by means of coprecipitation or adsorption onto newly formed Fe hydroxides as the solution encounters oxidized conditions (Shenker et al, 2005;Ajmone Marsan et al, 2006). As redox reactions influence indirectly the soil P chemistry through effects on the solubility of Fe and Mn minerals and the associated changes in pH affect the Ca phosphate solubility, the change in P concentration during a redox cycle depends on a combination of the shifts of redox potential and pH (Scalenghe et al, 2002).…”

Section: Phophorus-release Potential and Environmental Changes: Redoxmentioning

confidence: 99%

Aspects of phosphorus transfer from soils in Europe

Delgado

Scalenghe

2008

Z. Pflanzenernähr. Bodenk.

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Imbalanced nutrient management has caused soil phosphorus (P) to become an environmental rather an agronomic problem in more economically developed countries. This subject has been the topic of numerous journal special issues, conferences, and reviews but we consider yet another review of this subject is necessary with the main target of providing a point of view on nonpoint transfer from soils and control strategies for an improved environmental management of P. This review considers the causes of the excessive P transfer from soil to surface water in Europe and the scientific knowledge necessary to develop control strategies. There has been an increasing trend towards the P-research integration across Europe. The identification of critical source areas (CSA) for P loss at catchment level and the selection of best management practices (BMP) adapted at individual CSA are recognized by the scientific community as a main goal to reduce P losses. However, the adaptation of the CSA conceptual framework at European scale is not undemanding, not only due to the administrative differences between countries, but also to the heterogeneity of the landscape (area, as perceived by people, whose character is the result of the action and interaction of natural and/or human factors; CoE [2000]) in Europe (larger than in N America), the wide range of land use and management, and also to differences in the basic scientific information available in each country necessary to perform it. In the EU, policy context and environmental concerns about the effect of nutrient excesses in water were reflected in EU directives (early 1990s) mainly focussed on the reduction of nitrogen loads. Nevertheless, a large number of scientific outcomes have revealed that reduction of P loss to surface water bodies is one of the main factors for obtaining higher quality of fresh-and seawaters, which must result in new EU directives also focussed in nonpoint pollution related to P load.

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Phosphorus Transformations under Reduction in Long-term Manured Soils

Cited by 44 publications

References 46 publications

Phosphorus Mobilization from Manure-Amended and Unamended Alkaline Soils to Overlying Water during Simulated Flooding

Phosphorus Mobilization from Manure-Amended and Unamended Alkaline Soils to Overlying Water during Simulated Flooding

Integrating knowledge of nutrient forms and dynamics into improved nutrient management practices: Atribute to Régis Simard

Aspects of phosphorus transfer from soils in Europe

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