Avaliação de fontes e de extratores de silício no solo

Pereira, Hamilton Seron; Barbosa, Newton Cabral; Henrique, Gaspar

doi:10.1590/s0100-204x2007000200013

Cited by 31 publications

(30 citation statements)

References 10 publications

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“…The effect of calcium carbonate (CaCO 3 ) and wollastonite (CaSiO 3 ) on the soil pH in the two soils was similar (Table 1), as also reported by Pereira et al (2007). Besides supplying Si to the plants, wollastonite is an efficient liming material for the soil and is considered a standard Si source.…”

Section: Resultssupporting

confidence: 77%

Soil-applied silicon decreases severity of wheat spot blotch on silicon-deficient soils

Júnior

Fontes

Coelho³

et al. 2010

Rev. Bras. Ciênc. Solo

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SUMMARYSpot bloth caused by Bipolaris sorokiniana is an important wheat desease mainly in hot and humid regions. The aim of this study was to evaluate the response of wheat to different sources and modes of Si application, as related to the severity of wheat spot blotch and plant growth, in two Si-deficient Latosols (Oxisols). An greenhouse experiment was arranged in a 2 x 5 factorial completely randomized design, with eight replications. The treatments consisted of two soils (Yellow Latosol and Red Latosol) and five Si supply modes (no Si application; Si applied as calcium silicate and monosilicic acid to the soil; and Si applied as potassium silicate or monosilicic acid to wheat leaves). No significant differences were observed between the two soils. When Si was applied to the soil, regardless the Si source, the disease incubation period, the shoot dry matter yield and the Si content in leaves were greater. Additionally, the final spot blotch severity was lower and the area under the spot blotch disease progress curve and the leaf insertion angle in the plant were smaller. Results of Si foliar application were similar to those observed in the control plants.Index terms: Triticum aestivum L., Bipolaris sorokiniana (Sacc. in Sorok.), plant nutrition, Si.(

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Section: Resultssupporting

confidence: 77%

Soil-applied silicon decreases severity of wheat spot blotch on silicon-deficient soils

Júnior

Fontes

Coelho³

et al. 2010

Rev. Bras. Ciênc. Solo

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“…In soil samples where CaSiO 3 was applied as a corrective material, Si content increased when compared to the other treatments, because this element was solubilized and released, corroborating the findings of Ramos et al (2006), Pereira et al (2007), and Korndörfer et al (2010). No difference was observed between CaSiO 3 doses used to increase Si content in soil and the latter increased to 18.17 and 28.21 mg dm -3 , respectively, for the doses of 2.15 and 4.30 g kg -1 .…”

Section: Silicon Contentsupporting

confidence: 79%

Acidity neutralization and silicon availability using calcium silicate in soil cultivated with wheat (Triticum aestivum L.)

Júnior¹,

Blanco²,

Pereira³

et al. 2017

Aust J Crop Sci

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Most tropical soils have acidity issues. The amount of corrective treatment needed to neutralize such acidity depends on the corrective material and the cultivated species. Thus, this study aimed to evaluate soil acidity neutralization by using calcium silicate (CaSiO 3 ), compared to calcium carbonate (CaCO 3 ), and the effect of increased silicon (Si) availability in soil cultivated with wheat. The treatments under analysis were: A) control (no application of corrective material); B) a calcium carbonate P.A. (CaCO 3 ) dose of 1.5 g kg -1 ; C) twice this CaCO 3 dose, i.e. 3.0 g kg -1 ; D) calcium silicate (CaSiO 3 ), at the doses of 2.15 and 4.30 g kg -1 ; and E) CaSiO 3 at the dose of 4.30 g kg -1 for providing the same amount of Ca observed with CaCO 3 doses and also providing Si, at the doses of 0.09 and 0.18 g kg -1 , respectively. The experimental design was complete randomized blocks with 5 replicates. After 30-day incubation, pH in CaCl 2 , Ca, hydrogen + aluminum (H + Al), and Al and Si content, cation-exchange capacity (CEC) at pH 7.0, and soil base saturation were measured. Plant height, number of stalks and grains per plant, dry mass and grain yield, and Si leaf content were also evaluated. Both CaCO 3 and CaSiO 3 were efficient in correcting acidity and increasing Ca content, base saturation, and CEC at pH 7.0 in soil. The application of CaSiO 3 has led wheat to absorb more Si, and this provided higher grain yield and greater mass.

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“…Embora o extrator cloreto de cálcio 0,01mol L -1 mostre maiores correlações entre o Si extraído no solo e a quantidade de silício absorvida pela planta (PEREIRA et al,2007), os resultados ainda não são satisfatórios. Em estudos com extratores de silício no solo, o CaCl 2 tem apresentado estreita faixa de extração, (NARAYANASWAMY & PRAKASH, 2010;RODRIGUES et al,2003) e essa amplitude infl uencia na exatidão da análise, pois pode promover erros de análises (PEREIRA et al,2007).…”

Section: ** -----------------------------Ca (1) ---------------------unclassified

Eficiência de escórias de siderurgia na cultura do feijoeiro em sistema de semeadura direta

Deus

Büll

2013

Cienc. Rural

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No sistema de semeadura direta (SSD), a prática da correção da acidez do solo se restringe ao uso do calcário, havendo poucas informações em relação às escórias de siderurgia. O trabalho objetivou avaliar as alterações em propriedades químicas do solo, rendimento e absorção de nutrientes do feijoeiro, em função das formas de aplicação de escórias de siderurgia, comparadas ao calcário, na implantação do sistema de semeadura direta. O experimento foi conduzido na área experimental da Faculdade de Ciências Agronômicas de Botucatu (SP), no período de dezembro de 2010 a maio de 2011. Os tratamentos foram duas formas de aplicação de sete corretivos da acidez do solo: escórias de aciaria, de alto forno, de forno de panela, do aço inox (agrosilício), wollastonita, calcário dolomítico e calcário dolomítico calcinado, além de uma testemunha sem aplicação de corretivo. A dose aplicada de cada corretivo foi calculada para elevar a saturação por bases do solo a 70. A acidez do solo foi neutralizada até a camada de 20cm com os calcários, enquanto a wollastonita e escória de forno de panela atingiram a camada de 10cm; para as escórias de aciaria, alto forno e o agrosilício, o efeito corretivo ficou restrito aos primeiros 5cm. O rendimento do feijoeiro aumentou com a aplicação de corretivos da acidez do solo, sem diferença entre o modo de aplicação.

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Avaliação de fontes e de extratores de silício no solo

Cited by 31 publications

References 10 publications

Soil-applied silicon decreases severity of wheat spot blotch on silicon-deficient soils

Soil-applied silicon decreases severity of wheat spot blotch on silicon-deficient soils

Acidity neutralization and silicon availability using calcium silicate in soil cultivated with wheat (Triticum aestivum L.)

Eficiência de escórias de siderurgia na cultura do feijoeiro em sistema de semeadura direta

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