Aproveitamento de silício proveniente de escória siderúrgica por cultivares de cana-de-açúcar

Sousa, Robson Thiago Xavier de; Korndörfer, Gaspar Henrique; Wangen, Dalcimar Regina Batista

doi:10.1590/s0006-87052010000300019

Cited by 13 publications

(10 citation statements)

References 3 publications

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“…Linear increases in Si soil levels were verified as a function of slag doses applied to soil cultivated with sugarcane. In these work, one hundred and twenty days after the use of 100, 200 and 400 kg ha -1 Si, the total Si levels increased by 18, 56 and 72%, respectively (SOUSA;WANGEN, 2010). Comparative effect of silicate and limestone in sugarcane production showed that Si accumulation resulted in increased productivity, which was caused by reduction of transpiration and improvement of plant architecture.…”

Section: Silicate Effects On Sugarcane Productivitymentioning

confidence: 90%

Silicon: fertilization and nutrition in higher plants

Marafon¹,

Endres²

2013

RCA

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ABSTRACT:In this study, we aimed to provide information about the use of silicates in plant cultivation. Although silicon (Si) is one of the most abundant elements found in most soils in substantial quantities, various classes of soils, mainly the sandy ones, present low amounts of available Si in their upper horizons. In these soils, some plants such as sugarcane and rice, which have keen ability to accumulate Si in their tissues, can respond favorably to silicon fertilization. Silicates behave similarly to calcium and magnesium carbonates in soil, promoting chemical reactions similar to those induced by limestone, including pH increase, precipitation of toxic aluminum (Al 3+ ) and manganese (Mn 2+ ), increase of exchangeable calcium and magnesium and base saturation levels, and reduction of Al 3+ saturation, with the additional benefit of increasing Si levels in soils. Si benefits to plants are related mainly with increasing their resistance to attacks by insect pests, nematodes and diseases, and with reducing their transpiration rate, which provides further tolerance to water stress during periods of low soil moisture. RESUMO

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Section: Silicate Effects On Sugarcane Productivitymentioning

confidence: 90%

Silicon: fertilization and nutrition in higher plants

Marafon¹,

Endres²

2013

RCA

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“…Although the clay content of the soil is important for the reactivity of the applied silicate, the recovery of Si by sugarcane is also influenced by the experimental conditions. In sugarcane grown in pots (200 L) with sandy-loam soil, Sousa et al (2010) found a Si recovery index of 56.6, 35.8 and 25.8 %, after applications of 100, 200 and 400 kg ha -1 Si, respectively. However, Khalid et al (1978) found lower values of the recovery index of Si (10 %) after two crops (18 months) of sugarcane grown under field conditions in a clay soil with high oxide content.…”

Section: Resultsmentioning

confidence: 92%

“…Brassioli et al (2009) showed that silicate application provided the highest yield increase, more than lime in the third, fourth and fifth ratoon crops. However, only few studies have evaluated Si uptake at harvest or the recovery index of Si from the applied silicate (Khalid et al, 1978;Sousa et al, 2010), which is important to improve the sugarcane management in terms of Si fertilization.…”

Section: Introductionmentioning

confidence: 99%

Silicate fertilization of tropical soils: silicon availability and recovery index of sugarcane

Camargo

Rocha

Korndörfer

2013

Rev. Bras. Ciênc. Solo

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SUMMARYSugarcane is considered a Si-accumulating plant, but in Brazil, where several soil types are used for cultivation, there is little information about silicon (Si) fertilization. The objectives of this study were to evaluate the silicon availability, uptake and recovery index of Si from the applied silicate on tropical soils with and without silicate fertilization, in three crops. The experiments in pots (100 L) were performed with specific Si rates (0, 185, 370 and 555 kg ha -1 Si), three soils (Quartzipsamment-Q, 6 % clay; Rhodic Hapludox-RH, 22 % clay; and Rhodic Acrudox-RA, 68 % clay), with four replications. The silicon source was Ca-Mg silicate. The same Ca and Mg quantities were applied to all pots, with lime and/or MgCl 2, when necessary. Sugarcane was harvested in the plant cane and first-and second-ratoon crops. The silicon rates increased soil Si availability and Si uptake by sugarcane and had a strong residual effect. The contents of soluble Si were reduced by harvesting and increased with silicate application in the following decreasing order: Q>RH>RA. The silicate rates promoted an increase in soluble Si-acetic acid at harvest for all crops and in all soils, except RA. The amounts of Si-CaCl 2 were not influenced by silicate in the ratoon crops. The plant Si uptake increased according to the Si rates and was highest in RA at all harvests. The recovery index of applied Si (RI) of sugarcane increased over time, and was highest in RA.Index terms: cultivar, nutrition, fertilization, monocotyledons.(

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“…There are several reports in the literature related to Si increase in crops with the use of steel slag, such as in rice crops (Barbosa Filho et al, 2004) and sugarcane plantations (Sousa et al, 2010).…”

Section: Treatments* Results and Discussionmentioning

confidence: 99%

Nutrient accumulation and biomass production of alfafa after soil amendment with silicates

et al. 2014

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RESUMO Acúmulo de nutrientes e produção de biomassa de plantas de alfafa após correção do solo com silicatosPesquisas sobre o uso agronômico de corretivos à base de silicatos têm apontado o grande potencial desses insumos, no sentido de promover melhorias químicas do solo. Há poucas informações, porém, sobre as taxas de reatividade de suas frações granulométricas. O objetivo deste estudo foi verificar se a eficiência relativa de reatividade das frações granulométricas, obtidas experimentalmente, poderiam ser consideradas no cálculo do PRNT para prática da calagem, proporcionando adequado desenvolvimento de plantas de alfafa. Utilizaram-se seis tratamentos, que consistiram em duas escórias, aplicadas em duas doses, uma utilizando-se do PRNT medido experimentalmente e, a outra, do PRNT determinado em laboratório; calcário dolomítico e wollastonita, aplicados em uma dose, utilizando-se o PRNT determinado em laboratório. As doses dos corretivos foram calculadas a fim de elevar a saturação por bases a 80 %, considerando o PRNT experimental e de laboratório. Os tratamentos foram aplicados a dois solos: Latossolo Vermelho distrófico e Nitossolo Vermelho eutrófico. Os métodos de determinação de PRNT preconizados para calcários podem ser aplicados para escórias de siderurgia. A aplicação das escórias proporcionou ação corretiva do solo, com consequente maior acúmulo de Ca, P, e Si nas plantas de alfafa, favorecendo sua produção de matéria seca.Palavras-chave: escória de aciaria, acidez, PRNT, Medicago sativa L.. Received: 04/03/2013; Approved:11/02/2014 Studies on the use of silicate correctives in agriculture show that they have great potential to improve soil chemical characteristics, however, little information is available on the reactivity rates of their particle-size fractions. This study investigated whether the reactivity rates obtained experimentally could be considered in the calculation of ECC (effective calcium carbonate) for soil liming, promoting adequate development of alfalfa plants. Six treatments were evaluated in the experiment, consisting of two slag types applied in two rates. The experimental ECC was used to calculate one of the rates and the ECC determined in the laboratory was used to calculate the other. Rates of limestone and wollastonite were based on the ECC determined in laboratory. The rates of each soil acidity corretive were calculated to increase the base saturation to 80%. The treatments were applied to a Rhodic Hapludox and an Alfisol Ferrudalfs. The methods for ECC determination established for lime can be applied to steel slag. The application of slag corrected soil acidity with consequent accumulation of Ca, P, and Si in alfalfa, favoring DM production.

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Aproveitamento de silício proveniente de escória siderúrgica por cultivares de cana-de-açúcar

Cited by 13 publications

References 3 publications

Silicon: fertilization and nutrition in higher plants

Silicon: fertilization and nutrition in higher plants

Silicate fertilization of tropical soils: silicon availability and recovery index of sugarcane

Nutrient accumulation and biomass production of alfafa after soil amendment with silicates

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