Reatividade de uma escória de siderurgia em um latossolo vermelho distrófico

Prado, Renato de Mello; Natale, William; Feernandes, F. M.; Corrêa, Márcio Cleber de Medeiros

doi:10.1590/s0100-06832004000100019

Cited by 11 publications

(7 citation statements)

References 7 publications

(11 reference statements)

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“…After six months of conducting this test, the effects of dose and particle size were verified on the concentrations of Mg, V% and Si in the soil (Table 4). The alteration of Mg 2+ was directly reflected in base saturation, but without great efficiency to differentiate the effects of each particle size in this evaluation, thus disagreeing with the findings of Natale and Coutinho (1994) and Prado et al (2004) with regards to greater base saturation in discriminating the efficiency of the limestone and slag size fractions, respectively. Means followed by the same lower-case letter, in the same column, indicate no significant difference by the Tukey test (p< 0.5).…”

Section: Resultscontrasting

confidence: 97%

“…It was also observed that the material retained in the ABNT 5-10 sieve showed the lowest V% compared to the other sieves. This last result may be validated by the observations made by Prado et al (2004) who found a decrease in efficiency of steel slag to increase base saturation of a dystrophic Red Latosol as the particle size of the material became coarser. The interaction between the two factors studied was significant only for the particle size of 10 to 20 (Figure 1d) and contributed to the increase in base saturation only up to a dose of 1.2 g dm -3 of slag.…”

Section: Resultssupporting

confidence: 70%

“…Moreover, base saturation is presented as an additional practical benefit, since one of the liming methods is based on the V% value (Prado et al, 2004).…”

Section: Resultsmentioning

confidence: 99%

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Reactivity of a blast furnace slag in latosols

Soares¹,

Prado²,

Furlaneto³

2015

Afr. J. Agric. Res.

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Two experiments were conducted to study reactivity for a blast furnace slag, both developed in a greenhouse, in pots planted with Brachiaria brizantha. A 3 x 4 + 3 factorial was used with four replications, with three slag doses corresponding to 0.6, 1.2 and 2.4 g dm -3 for the clay soil and 2.2, 4.4 and 8.8 g dm -3 for the medium texture soil, four particle sizes (ABNT 5-10, 10-20, 20-50 and <50) and three controls (without corrective application, slag and dolomitic limestone in a dose corresponding to V=70%). In the clayey soil, there was a low efficiency of Ca and Mg release to the soil with the use of slag. It was concluded the slag, in its different particle size fractions influenced differently the pH, Ca and Mg of medium texture soil, where the fraction that passed through the ABNT 50 sieve had a greater effect on the chemical attributes evaluated. The corrective agents, slag and limestone, acted similarly on pH, Ca, Mg and V%. For greater liberation of silicon to the soil and absorption by plants it is necessary to use smaller particle sizes in the medium texture soil and intermediate particle sizes in the soil with clayey texture.

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Section: Resultscontrasting

confidence: 97%

Section: Resultssupporting

confidence: 70%

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Reactivity of a blast furnace slag in latosols

Soares¹,

Prado²,

Furlaneto³

2015

Afr. J. Agric. Res.

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“…Tal eficiência está relacionada com o maior fracionamento das partículas juntamente com teores mais elevados de Ca e Mg, o que é corroborado pela caracterização desses materiais em relação à classificação de corretivos de acidez (Tabela 1). Efeito semelhante foi observado em estudos correlacionando fracionamento das partículas e variação de pH conduzidos por Prado et al (2004), Kurihara et al (1999) e Bellingieri et al (1989 M. Alterações químicas do solo e resposta do milho à calagem e aplicação de gesso. Revista Brasileira de Ciência do Solo, v.28, p.125-136, 2004. …”

Section: Influência Das Doses Aplicadasunclassified

Resíduos de serragem de mármores como corretivo da acidez de solo

Raymundo¹,

Neves

Cardoso³

et al. 2013

Rev. bras. eng. agríc. ambient.

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O grande volume de resíduos gerados pela indústria de rochas ornamentais e sua composição com elementos essenciais à produção vegetal, indicam possibilidades de aproveitamento como corretivo de acidez de solos. Este estudo teve como objetivo a comparação em relação à capacidade de neutralização de acidez de solo, entre um resíduo de mármore serrado em tear diamantado, outro serrado em tear convencional e um calcário comercial. No experimento utilizaram-se, como substrato, amostras de solo classificado como Latossolo Vermelho-Amarelo distrófico e trÄ™s materiais testados em quatro diferentes níveis (75, 100, 150, 300% e testemunha) de uma recomendação padrão de correção de solo. As unidades experimentais foram acondicionadas em sacos de polietileno elevando-se a umidade do solo a 70% da capacidade de campo com água destilada. O delineamento experimental foi inteiramente casualizado, em esquema fatorial de 3 x 4 + 1 (testemunha) com 4 repetiçÅ‘es totalizando 52 unidades experimentais. Foram analisados o pH em água, Ca, Mg, Al, H + Al e calculados SB, CTC, V e m. Os resíduos apresentaram bom potencial para utilização como corretivo de acidez de solo, com reatividade inicial superior à do calcário comercial.

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“…The RER of silicate was higher than in carbonates, mainly in larger particle-size fractions, considering the average from all soil types (Table 7). These results do not corroborate Prado et al (2004). The authors applied the amounts 0.00, 5.04, and 10.08 t ha -1 for ABNT sieves #10, #20, #50 and <50 of steel slag in an dystrophic Red Latosol and found RER close to the values established by Brazilian legislation for lime.…”

Section: Resultsmentioning

confidence: 68%

Determination of reactivity rates of silicate particle-size fractions

et al. 2014

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The efficiency of sources used for soil acidity correction depends on reactivity rate (RR) and neutralization power (NP), indicated by effective calcium carbonate (ECC). Few studies establish relative efficiency of reactivity (RER) for silicate particle-size fractions, therefore, the RER applied for lime are used. This study aimed to evaluate the reactivity of silicate materials affected by particle size throughout incubation periods in comparison to lime, and to calculate the RER for silicate particle-size fractions. Six correction sources were evaluated: three slags from distinct origins, dolomitic and calcitic lime separated into four particle-size fractions (2, 0.84, 0.30 and <0.30-mm sieves), and wollastonite, as an additional treatment. The treatments were applied to three soils with different texture classes. The dose of neutralizing material (calcium and magnesium oxides) was applied at equal quantities, and the only variation was the particle-size material. After a 90-day incubation period, the RER was calculated for each particle-size fraction, as well as the RR and ECC of each source. The neutralization of soil acidity of the same particle-size fraction for different sources showed distinct solubility and a distinct reaction between silicates and lime. The RER for slag were higher than the limits established by Brazilian legislation, indicating that the method used for limes should not be used for the slags studied here.

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Reatividade de uma escória de siderurgia em um latossolo vermelho distrófico

Cited by 11 publications

References 7 publications

Reactivity of a blast furnace slag in latosols

Reactivity of a blast furnace slag in latosols

Resíduos de serragem de mármores como corretivo da acidez de solo

Determination of reactivity rates of silicate particle-size fractions

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