Potassium Silicate
Mostrando 1-12 de 42 artigos, teses e dissertações.
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1. PROPRIEDADES DE PROTEÇÃO TÉRMICA DO CARBETO DE SILÍCIO EM REVESTIMENTOS CERÂMICOS
In recent years, research on the development of protective materials has expanded significantly in order to find efficient and economically viable solutions for application in various industrial segments. Among these materials, those aimed at protecting metallic substrates against high temperatures that end up causing corrosive processes, stand out due to th
Quím. Nova. Publicado em: 2021-01
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2. Potassium recovery from Brazilian glauconitic siltstone by hydrothermal treatments
Abstract Silicate rock Verdete, collected in the central region of Minas Gerais state (Brazil) and composed mostly of micas (glauconite and muscovite) and tectosilicates (K-feldspar and quartz), was hydrothermally treated with several reactants in order to release and recover potassium. The hydrothermal products were characterized by flame photometry, XRD, X
REM, Int. Eng. J.. Publicado em: 2020-06
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3. Potential Slow Release Fertilizers Based on K2MgSiO4 Obtained from Serpentinite
In this work, a potassium magnesium silicate mineral based on phase K2MgSiO4 was prepared from serpentinite rock and studied as a potential K and Mg slow-release fertilizer. The material was prepared by impregnation of serpentinite/KOH and calcination at 700 °C to produce K2MgSiO4 phase, olivine and forsterite. The release patterns of K and Mg in the stirre
J. Braz. Chem. Soc.. Publicado em: 2020-04
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4. Foliar application of silicon decreases wheat blast symptoms without impairing photosynthesis
ABSTRACT Considering the importance of blast, caused by Pyricularia oryzae, to impact wheat yield, this study investigated whether the foliar spray of potassium silicate (PS) could affect the photosynthesis of wheat plants and its potential to reduce disease symptoms. The Exp. 1 aimed to determine the effect of the foliar spray of PS on the photosynthetic pe
Bragantia. Publicado em: 03/10/2019
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5. Occurrence of rice blast on and grain quality of irrigated rice fertilized with nitrogen and silicates
Resumo: O objetivo deste trabalho foi avaliar os efeitos da adubação com nitrogênio em cobertura e silicatos, bem como da utilização de fungicidas, sobre a ocorrência de brusone nas panículas, a renda do benefício e os grãos inteiros, vítreos e gessados, em cultivar de arroz irrigado por inundação sensível à doença. Foram conduzidos dois exper
Pesq. agropec. bras.. Publicado em: 29/08/2019
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6. Growth of sweet pepper plants submitted to water tensions in soil and potassium silicate doses
RESUMO O estresse hídrico compromete o crescimento vegetal. Indutores de resistência, como o silicato de potássio (K2SiO3) podem amenizar efeitos negativos desse estresse em Solanaceae, Capsicum annuum. A altura das plantas, diâmetro do caule e área foliar podem servir como indicadores da eficiência de pulverizações foliares com K2 SiO3 contra o estr
Hortic. Bras.. Publicado em: 15/04/2019
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7. Lime and calcium-magnesium silicate in the ionic speciation of an Oxisol
ABSTRACT Plant residues and certain fertilizers accelerate soil acidification and increase the levels of aluminum-Al+3 in soils under no-tillage (NT). Silicates act as acidity amendments and as a source of silicon as in H4SiO4. An increase in the pH of soil solution causes the deprotonation of H4SiO4 and generates the anionic form (H3SiO4−). The aim of thi
Sci. agric. (Piracicaba, Braz.). Publicado em: 2017-08
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8. Silicon, acibenzolar-S-methyl and potassium phosphite in the control of brown spot in rice
ABSTRACT This study investigated the effects of silicon (Si), acibenzolar-S-methyl (ASM), and potassium phosphite (Phi) on the potentiation of rice resistance to infection by Bipolaris oryzae. The treatments included the soil amended with Si (1.25 g of calcium silicate per kg of soil), spraying of plants with ASM (500 mg∙L–1), Phi (5 mL∙L–1), and dis
Bragantia. Publicado em: 26/02/2016
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9. Bioactivity of leucite containing glass - ceramics using natural raw materials
Glass compositions were carefully prepared, using natural quartz and potassium feldspar as a part of the starting raw materials. The solids were prepared so as to have theoretical stoichiometric leucite and 45S5 Bioglass in different L/Bg weight ratios between 0.43 - 1.00. Novel bioactive glass - ceramics, containing leucite, sodium calcium silicate and sili
Mat. Res.. Publicado em: 22/07/2014
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10. Effect of foliar application of potassium silicate on the progress of coffee leaf rust
In order to evaluate the effect of potassium silicate spray on the control of coffee leaf rust and coffee yield, an experiment was conducted during the 2005/2006 and 2006/2007 growing seasons on Coffea arabica cv. Catuaí Vermelho IAC 144, in a location situated at an elevation of 850 m in Coimbra, Minas Gerais, Brazil. The treatments consisted of: 1 - potas
Trop. plant pathol.. Publicado em: 2013-12
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11. Expressão diferencial de genes induzidos por antracnose em feijoeiro em resposta à indução da resistência por silício / Differential expression of genes activated by anthracnose in response to silicon induced resistance
O feijão é importante fonte carboidratos, vitaminas, minerais e fibras. No Brasil, a produtividade desta leguminosa é baixa e um dos fatores é a ocorrência de doenças como a antracnose causada pelo Colletothrichum lindemuthianum, que gera perdas de até 100% da produção. Plantas possuem diversos mecanismos de defesa contra patógenos e relatos aponta
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/08/2012
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12. Influência do cálcio e do silício via fertirrigação na produção e qualidade de flores cortadas de gérbera / Influence of calcium and silicon fertirrigation in the production and quality of cut gerbera
Com o objetivo de estudar o efeito do Ca e do Si via fertirrigação no desenvolvimento, produção e qualidade de gérbera de corte, um experimento foi conduzido em casa de vegetação no período compreendido entre 18 de novembro de 2009 a 4 de setembro de 2010. O delineamento experimental foi em blocos casualizados, em esquema de parcelas subdivididas, se
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/01/2012