Interações silício-fósforo em solos cultivados com eucalipto em casa de vegetação

Carvalho, Rui; Neto, Antônio Eduardo Furtini; Santos, Custódio Donizete dos; Fernandes, Luiz Arnaldo; Curi, Nilton; Rodrigues, Daniel Alencar

doi:10.1590/s0100-204x2001000300022

Cited by 19 publications

(13 citation statements)

References 11 publications

(12 reference statements)

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“…As respostas de crescimento vegetativo do eucalipto em função dos tratamentos utilizados no presente trabalho foram discutidas em Carvalho et al (2000Carvalho et al ( , 2001, não sendo aqui abordadas.…”

Section: Resultsunclassified

Absorção e translocação de silício em mudas de eucalipto cultivadas em latossolo e cambissolo

Carvalho

Neto²,

Curi³

et al. 2003

Ciênc. agrotec.

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Com o objetivo de estudar a absorção e a translocação de Si em mudas de Eucalyptus grandis W. Hill. Ex Maiden cultivadas em amostras de Latossolo Vermelho distrófico e de Cambissolo Háplico Tb distrófico, foram realizados dois experimentos em casa-de-vegetação. Cada solo foi submetido a três incubações seqüenciais para a aplicação dos tratamentos: a) CaCO3+MgCO3 para manter o pH em torno de 6,0; b) fertilização básica com macro e micronutrientes; c) seis doses de Si (CaSiO3). As plantas foram cultivadas em vasos contendo 2,7 dm3 de solo. O teor de Si solúvel em água no solo e o conteúdo de Si nas raízes e parte aérea das plantas foram avaliados aos 60, 90 e 120 dias do transplantio, ajustando-se superfícies de resposta dessas variáveis às doses de Si e às épocas. Determinaram-se os índices de eficiência de absorção e de utilização do Si pelas plantas e a porcentagem de Si translocado. Na fase inicial de crescimento (60 dias), as mudas absorveram muito pouco Si, e a eficiência de translocação foi máxima aos 60 dias, ficando a maior parte do elemento retida nas raízes a partir dessa época. O teor de Si solúvel em água no solo reduziu-se com o tempo, mas a absorção do elemento pelo eucalipto não foi responsável pelo fato. Os dados obtidos evidenciaram que o eucalipto não é uma planta acumuladora de Si, embora seja responsiva ao mesmo.

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Section: Resultsunclassified

Absorção e translocação de silício em mudas de eucalipto cultivadas em latossolo e cambissolo

Carvalho

Neto²,

Curi³

et al. 2003

Ciênc. agrotec.

Self Cite

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“…Possibly, the silicate has lower affinity with the bound sites of adsorption than phosphates. Carvalho et al (2001) observed in soil less weathering higher effects of Si in desorption of P than in soil more weathering as the case of Oxisol.…”

Section: Phosphorus Forms In the Soilmentioning

confidence: 75%

“…The rates of silicate fertilizer increased the availability of Pi before the cultivation of common bean. Possibly, the Si fertilizer applied increased the availability of Pi due to decreasing of bond energy of phosphate to soil colloids (Carvalho et al, 2001). The labile (resin-Pi and NaHCO 3 -Pi) and moderately labile fractions (NaOH 0.1M-P i ) decreased after common bean cultivated ( Figure 1), which may reassure the increase in P availability and uptake by common bean plant with the application of Si fertilizer, which was more evident in the treatments with higher rates of P fertilizer (Table 3).…”

Section: Soil Inorganic Phosphorus (Pi) Fractionsmentioning

confidence: 99%

Phosphorus and silicon fertilizer rates effects on dynamics of soil phosphorus fractions in oxisol under common bean cultivation

Alovisi¹,

Neto²,

Serra³

et al. 2016

Afr. J. Agric. Res.

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The purpose of this research was to evaluate the effects of P and Si fertilizer rates in dynamic of P fractions in clay soil under greenhouse. The research was carried out in a Dystroferric Red Latosol of a very loamy texture from Lavras city, Minas Gerais State, Brazil. The experimental design was entirely randomized, arranged in 4 × 3 factorial design, with four repetitions. The treatments included four inorganic fertilizer P rates (0, 110, 330 and 560 mg dm ). The preview application of Si fertilizer did not contribute to decrease P desorption. Possibly, the silicate has lower affinity with the bound sites of adsorption than phosphates. The effects of inorganic fertilizer P were higher in increasing the moderately labile and labile P inorganic fractions. Among the organic P fractions, the NaHCO 3 -Po fraction was the only one that contributes to plant nutrition. The Hedley sequential phosphorus fractionation promoted information about different pools where P was accumulated in the soil after common bean cultivation. The highest amount of P was obtained in stable P fraction, followed by moderately labile and labile P fraction. The moderately labile P fraction decreased after common bean cultivation possibly due to the time of P contact in the soil and redistribution to stable P fraction. The labile form was the lowest P pool in soil; nevertheless the increase in fertilizer P rates increases the amount of P content in labile fraction.

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“…Additionally, other positive effects of silicates are also related to Si-P interactions, enhancing P use (Carvalho et al, 2001). Ultramafic rock addition resulted in highest Si content in soil.…”

Section: Resultsmentioning

confidence: 99%

Effect of Alternative Multinutrient Sources on Soil Chemical Properties

Martins

Silva

Marchi

et al. 2015

Rev. Bras. Ciênc. Solo

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The current high price of potassium chloride and the dependence of Brazil on imported materials to supply the domestic demand call for studies evaluating the efficiency of alternative sources of nutrients. The aim of this work was to evaluate the effect of silicate rock powder and a manganese mining by-product, and secondary materials originated from these two materials, on soil chemical properties and on brachiaria production. This greenhouse experiment was conducted in pots with 5 kg of soil (Latossolo Vermelho-Amarelo distrófico -Oxisol). The alternative nutrient sources were: verdete, verdete treated with NH 4 OH, phonolite, ultramafic rock, mining waste and the proportion of 75 % of these K fertilizers and 25 % lime. Mixtures containing 25 % of lime were heated at 800 ºC for 1 h. These sources were applied at rates of 0, 150, 300, 450 and 600 kg ha -1 K 2 O, and incubated for 45 days. The mixtures of heated silicate rocks with lime promoted higher increases in soil pH in decreasing order: ultramafic rock>verdete>phonolite>mining waste. Applying the mining waste-lime mixture increased soil exchangeable K, and available P when ultramafic rock was incorporated. When ultramafic rock was applied, the release of Ca 2+ increased significantly. Mining subproduct released the highest amount of Zn 2+ and mn 2+ to the soil. The application of alternative sources of K, with variable chemical composition, altered the nutrient availability and soil chemical properties, improving mainly plant development and K plant uptake, and are important nutrient sources.

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Interações silício-fósforo em solos cultivados com eucalipto em casa de vegetação

Cited by 19 publications

References 11 publications

Absorção e translocação de silício em mudas de eucalipto cultivadas em latossolo e cambissolo

Absorção e translocação de silício em mudas de eucalipto cultivadas em latossolo e cambissolo

Phosphorus and silicon fertilizer rates effects on dynamics of soil phosphorus fractions in oxisol under common bean cultivation

Effect of Alternative Multinutrient Sources on Soil Chemical Properties

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