Effect of redox conditions on phosphate exchangeability and iron forms in a soil amended with ferrous iron

Schärer, Michael; Grave, E. De; Semalulu, O.; Sinaj, Sokrat; Vandenberghe, R. E.; Frossard, Emmanuel

doi:10.1111/j.1365-2389.2009.01135.x

Cited by 21 publications

(16 citation statements)

References 29 publications

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“…The NaHCO 3 -Pi and NaOH-Pi are regarded as a continuum of Fe-and Al-associated P, and HCl-P, defined as Ca-associated P, may contain some Fe-or Al-associated P not extracted by NaOH (Tiessen and Moir 2007). Therefore, with increasing soil Fe content, more P may be adsorbed on surfaces of crystalline, amorphous, and sesquioxide Fe compounds (Schoenau et al 1989;Scha¨rer et al 2009). However, all the Pi fractions were negatively correlated with Mehlich 3-extractable Al (P B0.05, Table 7), which contradicted other studies that suggest that P sorption is related to crystalline Fe and Al oxides and that P sorption capacity can be predicted from soil extractable Al and Fe and some other parameters (Freese et al 1992;Burt et al 2002).…”

Section: Relationships Between Soil P Fractions and Selected Soil Procontrasting

confidence: 53%

Soil phosphorus fractions following annual paper mill biosolids and liming materials application

Fan¹,

Ziadi²,

Gagnon³

et al. 2010

Can. J. Soil. Sci.

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Soil phosphorus fractions following annual paper mill biosolids and liming materials application. Can. J. Soil Sci. 90: 467Á479. Industrial by-products such as paper mill biosolids (PB) and different liming materials have been used as fertilizers and amendments in agricultural soils for many decades. However, little is known about the effects of their repeated application on soil nutrient availability, particularly phosphorus (P). A 6-yr field study (2000Á2005) was conducted in the province of Quebec to investigate the effect of repeated annual applications of different PB and industrial by-products on selected soil chemical properties, especially soil P fractions. Different PB rates (0 to 90 Mg wet ha(1 ) and several liming products (lime mud, wood ash, calcitic lime, and Mg by-products) were annually applied to field crops after seeding. Soils were sampled before seeding in May 2003 and at harvest in October 2005. Results showed that HCl-P was the largest P pool, accounting for about 64% of the total P fraction, and that the repeated applications of liming products significantly increased this pool and decreased the organic P pools. The NaOH-Po and residual-P were significantly lower in 2005 than in 2003, indicating that PB application without supplemental P fertilizer inputs enhanced the mobility and/or mineralization of NaOH-Po and the transformation of recalcitrant P to more labile forms with time. Lime mud (LM) was found to be the best liming material owing to its high neutralization capacity and positive effect on soil P availability over time.Key words: Paper mill biosolids, alkaline residuals, lime, wood ash, soil P fractions Fan, J. L., Ziadi, N., Gagnon, B. et Hu, Z. Y. 2010. Fractions du phosphore du sol suite a`l'application annuelle de biosolides papetiers et de re´sidus alcalins. Can. J. Soil Sci. 90: 467Á479. Les sous-produits industriels tel que les biosolides papetiers (BP) et les diffe´rents re´sidus alcalins ont e´te´utilise´s comme fertilisants et amendements en agriculture depuis plusieurs de´cennies. Toutefois, l'effet de leur application re´pe´te´e sur la disponibilite´des nutriments du sol, en particulier le phosphore (P), est encore mal connu. Une e´tude au champ de six ans (2000Á2005) a e´te´conduite dans la province de Que´bec pour e´valuer l'effet d'applications re´pe´te´es de diffe´rents BP et de re´sidus alcalins sur certaines proprie´te´s chimiques du sol, notamment les diffe´rentes fractions du P. Diffe´rents taux de BP (0 a`90 Mg humide ha (1 ) et quelques re´sidus alcalins (boues de chaux, cendres de bois, chaux calcique, sous-produit-magne´siens) ont e´te´applique´s annuellement en post-leve´e a`diffe´rentes cultures. Les sols ont e´te´e´chantillonne´s avant le semis en mai 2003 et a`la re´colte en octobre 2005. Les re´sultats ont indique´que le HCl-P est la fraction la plus importante repre´sentant environ 64% de toutes les fractions totales de P. Les applications re´pe´te´es de re´sidus alcalins ont significativement augmente´ce pool mais diminueć eux de la fraction organiqu...

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Section: Relationships Between Soil P Fractions and Selected Soil Procontrasting

confidence: 53%

Soil phosphorus fractions following annual paper mill biosolids and liming materials application

Fan¹,

Ziadi²,

Gagnon³

et al. 2010

Can. J. Soil. Sci.

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“…It is not known whether flooding also enhances P bioavailability in the highly weathered soils of Madagascar as most studies have either used a P‐sufficient soil (Scalenghe et al. , 2002; Schärer et al. , 2009) or a soil of high pH, where P speciation is controlled by Ca‐phosphate precipitates (Ann et al.…”

Section: Introductionmentioning

confidence: 99%

Larger bioavailability of soil phosphorus for irrigated rice compared with rainfed rice in Madagascar: results from a soil and plant survey

Rabeharisoa

Razanakoto

Razafimanantsoa

et al. 2012

Soil Use and Management

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Irrigated rice is less prone generally to phosphorus (P) deficiency than rainfed rice because redox reactions release P upon soil flooding. It is not known whether that is also true in highly weathered soils of Madagascar where the combination of high soil Fe and low P input may impede significant release of P. Soils and flag leaf samples were collected in 2010 in 38 irrigated rice and 46 rainfed rice fields belonging to private farmers. A critical flag leaf P content was derived from a P‐dosed pot trial study with three soils, and the results suggested 2.4 g P/kg as the critical value. Average flag leaf P was significantly larger in irrigated than in rainfed rice (2.2 compared with 1.7 g P/kg), and flag leaf P was below the critical value in 76% of irrigated rice fields while this fraction was 100% in rainfed rice. Nitrogen and K deficiencies were less prevalent. Flag leaf P increased with increasing soil pH and soil pH explained partially differences in leaf P between irrigated and rainfed rice. Flag leaf P was unrelated to soil organic matter, but increased with oxalate‐extractable soil P (Po). Multiple regression analysis revealed greater leaf P at equal soil Po and equal pH in irrigated compared with rainfed rice. Grain yield estimates (1‐m2 squares) increased with flag leaf P but not with leaf N and K. In a regression model, about 42 % of the yield variance was explained with soil Po and a rice‐growing system. The survey suggests that P is the main limiting nutrient for rice, and that soil P bioavailability is larger for irrigated than for rainfed rice in weathered soils of Madagascar.

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“…Furthermore, calcium minerals may not entirely control P availability in calcareous soils periodically experiencing reduced conditions, such as under furrow irrigation. Under reducing conditions, ferric‐bearing P minerals may experience dissolution, releasing P from the mineral matrix and leading to an increase in P availability (Parker and Beck, 2003; Schärer et al, 2009), making P management a true challenge.…”

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confidence: 99%

Mechanisms Responsible for Soil Phosphorus Availability Differences between Sprinkler and Furrow Irrigation

et al. 2019

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From a historical perspective, human‐induced soil erosion and resulting soil phosphorus (P) losses have likely occurred for thousands of years. In modern times, erosion risk and off‐site P transport can be decreased if producers convert from furrow to sprinkler irrigation, but conversion may alter nutrient dynamics. Our study goal was to determine soil P dynamics in furrow‐ (in place since the early 1900s) versus sprinkler‐irrigated (installed within the last decade) soils from four paired producer fields in Idaho. Furrow‐ and sprinkler‐irrigated soils (0–5 cm; Aridisols) contained on average 38 and 20 mg kg−1 of Olsen‐extractable P (i.e., plant‐available P), respectively; extractable P values over 40 mg kg−1 limit Idaho producers to P application based on crop uptake only. Soil samples were also analyzed using a modified Hedley extraction. Furrow‐irrigated soils contained greater inorganic P concentrations in the soluble+aluminum (Al)‐bound+iron (Fe)‐bound, occluded, and amorphous Fe‐bound pools. Phosphorus K‐edge X‐ray absorption near‐edge structure (XANES) spectroscopy was unable to detect Fe‐associated P but indicated greater amounts of apatite‐like or octacalcium phosphate‐like P in furrow‐irrigated producer soils, while sprinkler‐irrigated fields had lower amounts of apatite‐like P and greater proportions of P bound to calcite. Findings from a controlled USDA‐ARS sprinkler‐ versus furrow‐irrigation study suggested that changes in P dynamics occur slowly over time, as few differences were observed. Overall findings suggest that Fe redox chemistry or changes in calcium (Ca)‐associated P in flooded conditions altered P availability under furrow irrigation, even in aridic, calcareous soils, contributing to greater Olsen‐extractable P concentrations in long‐term furrow‐irrigated fields. Core Ideas Irrigation type may greatly affect soil P dynamics in calcareous systems. Furrow irrigated fields contained more plant‐available P than sprinkler irrigated fields. Furrow irrigation leads to Fe chemistry alterations, release of P, and increases available P. Available P increases under furrow irrigation could limit amendment application based on P, not N, crop needs. We still do not fully understand P dynamics in irrigated calcareous systems.

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Effect of redox conditions on phosphate exchangeability and iron forms in a soil amended with ferrous iron

Cited by 21 publications

References 29 publications

Soil phosphorus fractions following annual paper mill biosolids and liming materials application

Soil phosphorus fractions following annual paper mill biosolids and liming materials application

Larger bioavailability of soil phosphorus for irrigated rice compared with rainfed rice in Madagascar: results from a soil and plant survey

Mechanisms Responsible for Soil Phosphorus Availability Differences between Sprinkler and Furrow Irrigation

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