Bioavailability of Cadmium Contained in Single Superphosphates Produced From Different Brazilian Raw Materials

Prochnow, Luís Ignácio; Plese, L. P. M.; Abreu, Mônica Ferreira de

doi:10.1081/css-100103007

Cited by 12 publications

(17 citation statements)

References 15 publications

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“…This result agrees with other statements that Brazilian rock phosphates present low heavy metal concentrations (Langenbach & Sarpa, 1985;Camargo et al, 2000) and that such concentrations vary for phosphates obtained from different regions. Cadmium and Pb concentrations in triple superphosphate are above the concentrations obtained in other studies (Prochnow et al, 2001;McBride & Spiers, 2001). The Yorin thermophosphate presented the lowest Cd concentration.…”

Section: Resultssupporting

confidence: 54%

“…However, little information is available either on the uptake of heavy metals by plants in soils fertilized with different phosphate fertilizers or on the long term accumulation of such metals in soils. Cadmium concentration in maize amended with phosphate fertilizers was significantly affected not only by P sources but also by their localization in the soil (Prochnow et al, 2001). The application of fertilizers could increase the heavy metal bioavailability in soils due to the chemical alterations they provoked in the system (Tu et al, 2002).…”

Section: Introductionmentioning

confidence: 97%

“…The main Brazilian rock phosphates are low in heavy metals (Langenbach & Sarpa, 1985;Camargo et al, 2000). For this reason, soluble phosphorus fertilizers produced from such sources presented Cd concentrations ranging from 5.1 to 9.4 mg kg -1 (Prochnow et al, 2001). Low concentrations of Pb, which varied from 5.7 to 9.9 mg kg -1 , were also found in superphosphates (McBride & Spiers, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Due to the relatively low concentrations of Cd and Pb in fertilizers, many researchers (Langenbach & Sarpa, 1985;Camargo et al, 2000;Prochnow et al, 2001) have recommended their use without drawbacks regarding environmental contamination. However, little information is available either on the uptake of heavy metals by plants in soils fertilized with different phosphate fertilizers or on the long term accumulation of such metals in soils.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, much research has been conducted to evaluate the presence of such metals in these amendments (Gabe & Rodella, 1999;Camargo et al, 2000;Prochnow et al, 2001;McBride & Spiers, 2001;Loganathan et al, 2003;Alves, 2003). The heavy metal concentration in phosphate fertilizers is dependent on the type of rock phosphate used as raw material.…”

Section: Introductionmentioning

confidence: 99%

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Bioavailability of cadmium and lead in a soil amended with phosphorus fertilizers

Mendes

Duda

Nascimento

et al. 2006

Sci. agric. (Piracicaba, Braz.)

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Phosphorus fertilizers are essential to obtain high productivity, however, they contain heavy metals that can contaminate the soil and threat the health of animals and humans. The present study focused the determination of Cd and Pb concentrations in different phosphorus fertilizers as well as the absorption of these heavy metals by velvet green bean grown on soil amended with such fertilizers. The experiment was set up as a completely randomized design in a factorial scheme. The factors were four phosphorus sources (triple superphosphate-TS, Yorin thermophosphate-YT, Araxa rock phosphate-AP, and Gafsa rock phosphate-GP) applied at five rates (0, 92, 183, 275, and 366 kg ha -1 of P 2 O 5 ). The data obtained were submitted to variance and regression analysis. Lead availability to velvet bean was not altered as a result of fertilizer application. On the other hand, Cd uptake was significantly increased with addition of the tested fertilizers. Such an increase was a function of the rate. The highest Cd contents in shoots was reached by YT and TS applications, whereas the lowest one resulted from rock phosphate treatments. All the phosphorus sources tested increased Cd uptake in the first harvest. For the second harvest, Cd content in the shoot was detected only in plants grown on TS and GP amended soils. Key words: heavy metals, phytoextraction BIODISPONIBILIDADE DE CÁDMIO E CHUMBO EM UM SOLO ADUBADO COM DIFERENTES FONTES DE FÓSFORORESUMO: Fertilizantes fosfatados são essenciais para obtenção de altas produtividades, entretanto, eles podem conter metais pesados que podem contaminar o solo e ameaçar a saúde humana e animal. Este trabalho objetivou a determinação da concentração de Cd e Pb em diferentes fertilizantes fosfatados, bem como a absorção desses metais por plantas de mucuna preta cultivadas em casa-de-vegetação em solo submetido a diferentes doses desses fertilizantes. Os tratamentos foram arranjados em esquema fatorial 4 × 5, dispostos em delineamento experimental inteiramente casualizado, com três repetições, sendo os fatores quatro fontes de P (superfosfato triplo-ST, termofosfato de Yorin-TY, fosfato de Araxá-FA e fosfato de Gafsa-FG) e cinco doses de P 2 O 5 (0, 92, 183, 275 e 366 kg ha -1 ). Os dados foram submetidos à análise de variância e equações de regressão foram ajustadas. A disponibilidade de Pb para mucuna preta nos solos não foi alterada pela aplicação de nenhum dos fertilizantes testados. No entanto, a absorção de Cd pelas plantas foi significativamente aumentada pela aplicação de qualquer um dos fertilizantes, sendo esta absorção proporcional às doses aplicadas. O TY e o ST foram responsáveis pelas maiores concentrações de Cd na parte aérea das plantas, enquanto as menores foram observadas com a aplicação dos fosfatos naturais. Todas as fontes de fósforo disponibilizaram Cd para as plantas no primeiro cultivo. Entretanto, a absorção de Cd só foi detectada no segundo cultivo para os fertilizantes ST e FG. Palavras-chave: metais pesados, fitoextração

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Section: Resultssupporting

confidence: 54%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Bioavailability of cadmium and lead in a soil amended with phosphorus fertilizers

Mendes

Duda

Nascimento

et al. 2006

Sci. agric. (Piracicaba, Braz.)

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Use of reactive phosphate rocks as fertilizer on acid upland soils in Indonesia: accumulation of cadmium and zinc in soils and shoots of maize plants

Rochayati

Laing

Rinklebe

et al. 2011

Z. Pflanzenernähr. Bodenk.

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A pot experiment was conducted to study the contribution of reactive phosphate rocks (RPRs) on the accumulation of Cd and Zn in 10 acid upland soils in Indonesia and shoots of Zea mays plants grown on these soils. Two types of RPR were used at a rate of 0.5 g (kg soil)–1: RPRL containing 4 mg Cd kg–1 and 224 mg Zn kg–1, and RPRH containing 69 mg Cd kg–1 and 745 mg Zn kg–1. Zea mays was harvested at 6 weeks after planting. The application of RPRH significantly increased the concentrations of Cd in the shoots. The application of this RPR also increased the amount of Cd which could be extracted by 0.5 M NH4‐acetate + 0.02 M EDTA pH 4.65 from the soils. More than 90% of the added Cd remained in the soil. As Zn is an essential element and the studied acid upland soils are Zn‐deficient, increased plant growth upon RPR application might be partly attributed to Zn present in the phosphate rock. However, more experiments are needed to confirm this hypothesis. The Cd and Zn concentrations and CEC of the soils were important soil factors influencing the concentrations of Cd and Zn in the shoots of maize plants grown on these soils.

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Phosphorus–cadmium interactions in paddy soils

et al. 2016

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Regular application of phosphate (P) fertilisers has been identified as the main source of heavy metal(loid) contamination including cadmium (Cd) in agricultural soils. Some of these P fertilisers that act as a source of Cd contamination of soils have also been found to act as a sink for the immobilisation of this metal(loid). In paddy soils, redox reactions play an important role in the (im)mobilisation of nutrients and heavy metal(loid)s, as a result of flooding of the rice plains. Although a number of studies have examined the potential value of P compounds in the immobilisation of metals in contaminated soils, there has been no comprehensive review on the mechanisms involved in the P-induced (im)mobilisation of Cd in paddy soils. There are a number of factors that influences P induced Cd (im)mobilisation in paddy soils that include pH, redox reactions, liming effect, rhizosphere acidification and root iron plaques. Following a brief overview of the reactions of Cd and common P compounds that are used as fertiliser in soils, the review focuses on the above mentioned mechanisms for the (im)mobilisation of Cd by P compounds in paddy soils. The role of iron plaques on Cd status in soil and rice plants is also discussed followed by a summary and future research needs. *Manuscript Click here to download Manuscript: Text-Geoderma-Cd-paddysoil-Manuscript.docx Click here to view linked References

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Bioavailability of Cadmium Contained in Single Superphosphates Produced From Different Brazilian Raw Materials

Cited by 12 publications

References 15 publications

Bioavailability of cadmium and lead in a soil amended with phosphorus fertilizers

Bioavailability of cadmium and lead in a soil amended with phosphorus fertilizers

Use of reactive phosphate rocks as fertilizer on acid upland soils in Indonesia: accumulation of cadmium and zinc in soils and shoots of maize plants

Phosphorus–cadmium interactions in paddy soils

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