Calagem e silicatagem superficiais e a disponibilidade de cátions hidrossolúveis em culturas anuais e braquiária

Castro, Gustavo Spadotti Amaral; Crusciol, Carlos Alexandre Costa; Menegale, Marcella Leite de Campos

doi:10.1590/s1806-66902012000400016

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…In addition, organic ionic pairs formed by soil cations and water-soluble compounds with low molecular weight (originated from residue decomposition through C=O-OH radicals) may improve ion mobility throughout the profile (Castro et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Surface application of limestone and calcium-magnesium silicate in a tropical no-tillage system

Castro

Crusciol²,

Costa

et al. 2016

J. Soil Sci. Plant Nutr.

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Although lime is currently the most commonly applied material for soil acidity correction in Brazil, calciummagnesium silicate application may efficiently replace this source due to its higher solubility and silicon supply, which is beneficial for plant development. This study aimed to evaluate the efficiency of surface liming and silicate application on soil chemical attributes as well as soybean and maize nutrition, yield components, and grain yield. The experiment was conducted in a Rhodic Hapludox in Botucatu-SP, Brazil. The randomized complete block design contained 16 replications. Treatments consisted of two materials for soil acidity correction (dolomitic lime, calcium/magnesium silicate), applied on October 2006 to raise base saturation up to 70%, and a control, with no acidity correction. Soybean and maize were sown in 2006/2007 and 2007/2008, respectively. After 18 months Ca-Mg silicate corrected soil acidity up to 0.60 m, and increased exchangeable base levels up to 0.40 m. Silicate increased silicon concentrations in plant tissues in both crops as well as phosphorus in soybean. The application of both sources increased calcium and magnesium concentrations as well as yield components and yield grains of soybean and maize. Soil acidity correction improved the efficiency of fertilizers applied for grain production.Keywords: acid soils, Brazilian 'Cerrado', liming, annual crops 363 Surface application of limestone and calcium-magnesium silicate in a tropical no-tillage system

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Section: Discussionmentioning

confidence: 99%

Surface application of limestone and calcium-magnesium silicate in a tropical no-tillage system

Castro

Crusciol²,

Costa

et al. 2016

J. Soil Sci. Plant Nutr.

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“…Os solos dessa região são pobres devido à lixiviação de bases, alta acidez e alta saturação de alumínio (Ribeiro-Silva et al, 2012;Albuquerque et al, 2016). A aplicação do calcário é a principal prática utilizada para reduzir a acidez do solo (Castro et al,2012). Mas, a ação desse corretivo normalmente é limitada a camada superficial do solo, devido à sua baixa solubilidade, não sendo eficiente na redução da acidez em subsuperfície (Caires et a., 2003).…”

Section: Introductionunclassified

Desenvolvimento de variedades de capim-elefante sob a influência do gesso agrícola mineral no Polo Gesseiro do Araripe

Santos

Freire

Rocha

et al. 2020

RSD

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A aplicação do gesso agrícola mineral em solo ácido na Chapada do Araripe pode favorecer o desenvolvimento de variedades de capim-elefante, possibilitando o uso da biomassa como fonte alternativa de energia. Este trabalho teve como objetivo avaliar o desenvolvimento em variedades de capim-elefante cultivadas sob aplicação de gesso agrícola mineral, no Polo Gesseiro do Araripe. Foram cultivadas três variedades de capim-elefante (Cameroon, Gramafante e Roxo), na presença e ausência do gesso, compondo arranjo fatorial (3 x 2), com 4 repetições. Foram executadas duas avaliações, a primeira aos 128 dias após o plantio (DAP), na qual avaliou-se o comprimento e a largura da folha +3, altura da planta, diâmetro do colmo e perfilhamento. Na segunda, aos 213 DAP, foram avaliadas todas as variáveis supracitadas, com exceção do comprimento e da largura foliar. A aplicação do gesso mineral não influenciou o comprimento e a largura da folha +3, independentemente da variedade. Inicialmente o gesso apresentou efeito benéfico no perfilhamento, mas na segunda avaliação teve efeito deletério. As variedades de capim-elefante respondem de modo diferente à aplicação do gesso. A variedade Cameroon foi a que apresentou maior potencial para o cultivo com gesso, na Chapada do Araripe, em Pernambuco.

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Tillage system and lime application in a tropical region: Soil chemical fertility and corn yield in succession to degraded pastures

Tiritan

Büll

Crusciol

et al. 2016

Soil and Tillage Research

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The chemical degradation of soils, due to acidity, and erosion processes, resulting from a traditional tillage system method, are one of the main factors responsible for decreasing the productive capacity of tropical pastures. Thus, establishing the crop-livestock integration system (CLIS) by applying lime on surface without disrupting the soil is interest. The objectives of this study were to evaluate the chemical changes in a soil following surface application or incorporation of lime and to determine the effects of liming on plant nutrition, corn (Zea mays L.) grain yields, and various yield components in cultivated areas of degraded Brachiaria decumbens Stapf pasture. A randomized block experimental design with a splitplot arrangement consisting of two management systems (tillage and no-tillage system) and three lime rates (0.0; 2.7 and 5.4 Mg ha À1) was used. The highest reactivity of calcium carbonate was observed after six months of liming, since during the sampling time the level of exchangeable Ca 2+ and Mg 2+ decreased to 0.05 m depth, and increased Al 3+ and soil acidity to 0.3 m. The incorporation of lime did not increase the movement or reaction of the bases in the degraded soil profile. Therefore, surface liming under perennial forage crop residues (B. decumbens Stapf. pasture) provided the best alternative to increase the soil pH index at a depth of up to 0.3 m. Macronutrients uptake by plant, yield components, and corn grain yield were not affected by the application method. However, the use of limestone showed viability to maximize up to 20% in corn productivity, regardless of lime rate. The results suggest that it is possible to ameliorate soil acidity and chemical properties of degraded grassland only by surface application of limestone; however, the strategy is considered effective just for soils with no physical restriction to root development. 2015 Elsevier B.V. All rights reserved.

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Calagem e silicatagem superficiais e a disponibilidade de cátions hidrossolúveis em culturas anuais e braquiária

Cited by 4 publications

References 6 publications

Surface application of limestone and calcium-magnesium silicate in a tropical no-tillage system

Surface application of limestone and calcium-magnesium silicate in a tropical no-tillage system

Desenvolvimento de variedades de capim-elefante sob a influência do gesso agrícola mineral no Polo Gesseiro do Araripe

Tillage system and lime application in a tropical region: Soil chemical fertility and corn yield in succession to degraded pastures

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