Competitive sorption and desorption of phosphate and citrate in clayey and sandy loam soils

Souza, Matheus Fonseca de; Soares, Emanuelle Mercês Barros; Silva, Ivo Ribeiro da; Novais, Roberto Ferreira; Silva, Mailson Félix de Oliveira

doi:10.1590/s0100-06832014000400011

Cited by 12 publications

(4 citation statements)

References 33 publications

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“…Citrate is capable of desorbing phosphate from the surfaces of Fe‐oxides, kaolinite, and whole soils (e.g. Barrow, Debnath, & Sen, ; Dakora & Phillips, ; Geelhoed, Hiemstra, & Van Riemsdijk, , ; Gerke, ; Hu, He, Li, & Liu, ; Johnson & Loeppert, ; Jones et al., ; Lindegren & Persson, ; Mikutta, Lang, & Kaupenjohann, ; Nagarajah, Posner, & Quirk, ; Oburger, Jones, & Wenzel, ; Parfitt, ; Santos, Hesterberg, & Alleoni, ; Souza et al., ; Yan, Koopal, Liu, Huang, & Feng, ). Work with Fe‐oxides has shown that competitive effects depend on a range of factors, including pH, phosphate and citrate concentration, and the crystallinity of the Fe‐oxide sorbent (Geelhoed et al., , ; Johnson & Loeppert, ; Lindegren & Persson, ; Parfitt, ).…”

Section: Introductionmentioning

confidence: 99%

Attenuated total reflectance–Fourier transform infrared study of the effects of citrate on the adsorption of phosphate at the hematite surface

Barreto

Elzinga

Alleoni

2020

Soil Science Soc of Amer J

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Carboxylic acids affect the retention and solubility of phosphate in soils and rhizospheres, but spectroscopic studies addressing the mechanisms involved are scarce. Here, we used in situ attenuated total reflectance Fourier transform infrared spectroscopy to study the mechanisms of adsorption of orthophosphate and citric acid onto hematite in binary and ternary systems at pH 4.5, 5.5, and 6.5. In binary systems, phosphate adsorbed as a mixture of two inner‐sphere species assigned as monodentate and bridging complexes, with the fraction of bridging species increasing with decreasing pH. Citrate coordinated to the hematite surface through the carboxylate groups, which consisted of a mixture of inner‐sphere complexes and either noncoordinated or outer‐sphere complexes, with inner‐sphere complexation becoming more important at lower pH. Introduction of citrate into pre‐equilibrated phosphate–hematite systems induced desorption of both the monodentate and bridging phosphate species, with competitive effects increasing with decreasing pH. At pH 5.5 and 6.5, the bridging complexes were mobilized to a larger extent than initially present on the surface, indicating preferential desorption. Similarly, pre‐equilibration of hematite with citrate preferentially inhibited the formation of the bridging phosphate surface complexes. Their relatively strong susceptibility to interference by citrate suggests that the bridging phosphate species are protonated monodentate complexes engaged in hydrogen bonding to adjacent surface sites. The results of this study refine our understanding of the mechanisms of phosphate retention at Fe‐oxide mineral surfaces and demonstrate that carboxylic acids may affect not only phosphate solubility but also the speciation of phosphate associated with Fe‐oxides in soil and rhizosphere environments.

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Section: Introductionmentioning

confidence: 99%

Attenuated total reflectance–Fourier transform infrared study of the effects of citrate on the adsorption of phosphate at the hematite surface

Barreto

Elzinga

Alleoni

2020

Soil Science Soc of Amer J

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“…Weng et al (2008) found an even stronger effect when using fulvic acids (FA). Several other studies with low molecular weight organic anions such as oxalate (Violante et al, 1991) and citrate (de Souza et al, 2014) also observed increased P availability, although less pronounced compared to HA and FA. These examples all refer to short-term effects of SOM on P availability, and thereby mainly concern P present in the fast pool.…”

Section: Introductionmentioning

confidence: 73%

Increasing soil organic carbon content can enhance the long‐term availability of phosphorus in agricultural soils

Vermeiren

Kerckhof

Reheul

et al. 2021

European J Soil Science

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The stocks of phosphorus (P) in soil resulting from decades of over-fertilisation can be used as a long-term source of P provided that crop P bioavailability is ensured. This study was set up to identify to what extent soil organic matter (SOM) affects the long-term availability of these stocks, the premise being that OM may limit irreversible P fixation in soil by blocking P sorption sites on sesquioxides. An ensemble of 42 agricultural soils, composed from experimen-

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“…As substâncias húmicas por sua vez contribuíram para maior crescimento e produtividade de aquênios no Latossolo Vermelho-Amarelo. Souza et al (2014) em estudo de sorção de P no solo na presença de ácidos orgânicos encontraram maiores efeitos em Latossolo mais argiloso. Contrariamente ao obtido pelos autores, neste trabalho o maior efeito das substâncias húmicas foi observado no solo mais arenoso.…”

Section: Discussionunclassified

Fontes E Formas De Aplicação Da Adubação Fosfatada Na Cultura Do Girassol

Valadão

Júnior

Souza

et al. 2020

NAT

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Os solos sob Cerrado são naturalmente pobres em fósforo, sendo imprescindível a sua adição aos sistemas agrícolas. No entanto, a fonte utilizada e a forma de aplicação podem afetar o resultado. Assim, objetivou-se nesse trabalho, avaliar as características vegetativas e produtivas do girassol em função do manejo da adubação fosfatada, utilizando diferentes fontes e formas de aplicação. Para isso, foram realizados dois experimentos, sendo um em Latossolo Vermelho-Amarelo distrófico de textura média e outro em Latossolo Vermelho distrófico de textura argilosa, sob delineamento em blocos casualizados em esquema fatorial 3x4+1 com quatro repetições. O primeiro fator refere-se a três fontes de P, sendo uma fonte mineral (monoamônio fosfatado - MAP- 48% de P2O5; 11% de N), outra representada pelo MAP+substância húmica líquida (0% de P2O5; 2 % de N) e uma fonte organomineral granulado com substâncias húmicas (26% de P2O5; 5% de N). O segundo fator trata-se de quatro formas de aplicação do adubo sendo 100, 67, 33 e 0% aplicado a lanço e o restante aplicado no sulco de semeadura. O tratamento adicional foi a não aplicação de P e substâncias húmicas. A fonte e a forma de aplicação do adubo fosfatado afetam a cultura do girassol. A produtividade de aquênios foi afetada pelos fatores testados, havendo interação significativa em ambos os solos. Para o Latossolo Vermelho-Amarelo o adubo MAP isolado pode ser aplicado 100% a lanço sem redução de produtividade e quando em conjunto com substâncias húmicas, no mínimo 33% da dose deve que ser aplicada no sulco de semeadura. No Latossolo Vermelho tanto o MAP quanto o adubo organomineral tem que ser aplicado no mínimo 67% da dose no sulco de semeadura e quando for acrescido substâncias húmicas ao MAP, apenas 33% são necessários ser aplicado no sulco de semeadura. Palavras-chave: fósforo; adubação organomineral; adubação a lanço; Hellianthus annus; teor de P. SOURCES AND WAYS OF APPLICATION OF PHOSPHATE FERTILIZATION IN THE SUNFLOWER CULTURE ABSTRACT: Soils under Cerrado are naturally low in phosphorus, and their addition to agricultural systems is essential. However, the source used and the form of application can affect the result. Thus, the objective of this work was to evaluate the vegetative and productive characteristics of the sunflower according to the management of phosphate fertilization, using different sources and forms of application. For this, two experiments were carried out, one in a Latossolo Vermelho-Amarelo distrófico with medium texture and the other in a Latossolo Vermelho Distrófico with clay texture, under a randomized block design in a 3x4 + 1 factorial scheme with four replications. The first factor refers to three sources of P, one mineral source (phosphate monoammonium - MAP- 48% P2O5; 11% N), another represented by MAP + liquid humic substance (0% P2O5; 2% N) and a granulated organomineral source with humic substances (26% P2O5; 5% N). The second factor is four ways of applying the fertilizer, 100, 67, 33 and 0% applied to haul and the rest applied to the seeding furrow. The additional treatment was the non-application of P and humic substances. The source and form of application of the phosphate fertilizer affect the sunflower crop. The achenes productivity was affected by the tested factors, with significant interaction in both soils. For the Latossolo Vermelho-Amarelo, the isolated MAP fertilizer can be applied 100% by haul without reducing productivity and when in conjunction with humic substances, at least 33% of the dose must be applied in the seeding furrow. In the Latossolo Vermelho both MAP and organomineral fertilizer must be applied at least 67% of the dose in the sowing furrow and when humic substances are added to the MAP, only 33% are necessary to be applied in the seeding furrow. Keywords: phosphorus; organomineral fertilization; haul fertilization; Hellianthus annus; P content.

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Competitive sorption and desorption of phosphate and citrate in clayey and sandy loam soils

Cited by 12 publications

References 33 publications

Attenuated total reflectance–Fourier transform infrared study of the effects of citrate on the adsorption of phosphate at the hematite surface

Attenuated total reflectance–Fourier transform infrared study of the effects of citrate on the adsorption of phosphate at the hematite surface

Increasing soil organic carbon content can enhance the long‐term availability of phosphorus in agricultural soils

Fontes E Formas De Aplicação Da Adubação Fosfatada Na Cultura Do Girassol

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