Aplicação de calcário com diferentes graus de reatividade: alterações químicas no solo cultivado com milho

Araújo, Suzana Romeiro; Demattê, José Alexandre Melo; Garbuio, Fernando José

doi:10.1590/s0100-06832009000600024

Cited by 14 publications

(12 citation statements)

References 18 publications

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“…Among the technologies available to agriculture, the use of lime for acidic soils is perhaps the most important and can promote the greatest economic return (Prado, 2003). Araújo et al (2009) emphasize that mostly Brazilian soils are acidic, especially those under Savanna vegetation (Brazilian Cerrado). These soils typically present low Ca 2+ and Mg 2+ contents, high Al 3+ contents and low P availability (Novais et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Sampling grid density and lime recommendation in an Oxisol

Bottega¹,

Queiroz²,

Pinto³

et al. 2014

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe objective of this study was to evaluate the influence of different sampling grids density in the lime requirements in an Oxisol. The experiment was conducted at a rural property located in Sidrolândia city, Mato Grosso do Sul state, in the Brazilian 'Cerrado' . In the soil attributes mapping, regular sampling grid was used consisting of 99 points, spread over an area of 90 ha. Other two grids (51 and 27 points) were derived by deleting lines or lines and points from the original one. Based on the results of soil analysis, the lime requirement at each sample point was calculated. Using geostatistical techniques the spatial variability of lime requirement was studied and grid configuration for each sample was tested. By kriging, maps were made. By reducing the number of sampling points, 11% of the experimental area showed an overestimation and 8% underestimation comparing with the lime requirement made using the highest sampling grid density.

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Section: Introductionmentioning

confidence: 99%

Sampling grid density and lime recommendation in an Oxisol

Bottega¹,

Queiroz²,

Pinto³

et al. 2014

Rev. bras. eng. agríc. ambient.

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“…Increasing soil pH provides greater nutrients availability. Studies have shown that increasing soil pH with liming results in a linear reduction of soil exchangeable Al 3+ contents [20]. [21] reported that calcium carbonates (CaCO 3 ) and magnesium carbonate (MgCO 3 ) react with soil hydrogen releasing water and carbon dioxide.…”

Section: Resultsmentioning

confidence: 99%

Correction of Acidity of a Brazilian Cerrado Oxisol with Limestone and Wood Ash on the Initial Growth of Cowpea

Bonfim-Silva¹,

Costa²,

José³

et al. 2019

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Among Brazilian soils orders, there are some of it classified as acid soils, which need correction to guarantee crop productivity. Currently, limestone is the most used soil corrective and wood ash has been a sustainable alternative to this process. Thus, the objective was to evaluate the effect of two correctives of soil acidity on an Oxisol collected in the Brazilian Cerrado area using limestone and wood ash and the effect of soil correction on initial growth of cowpea. Two greenhouse experiments were carried out: 1) with limestone, using base saturation levels (V%) of 0, 20, 40, 60 and 80; and 2) wood ash, with doses of 0, 8, 16, 24 and 32 g•dm −3 , both in five randomized blocks. At 40 days after sowing, it was verified that pH values were within the range considered ideal for soil (pH of 5 to 7), according to the increase of base saturation levels and wood ash doses, but limestone provided faster results. Initial growth of cowpea was positively influenced by soil correction with use of both correctives. Wood ash and limestone increased soil pH to adequate values and resulted in better initial crop development.

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“…Prado & Natale (2005) used calcium silicate to increase base saturation to 50 %, but obtained only 46%. Araújo et al (2009), studying limestone with different reactivity levels, obtained base saturation up to 60% when liming was calculated to reach 80%. The authors attributed this result to the soil buffering effect.…”

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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Aplicação de calcário com diferentes graus de reatividade: alterações químicas no solo cultivado com milho

Cited by 14 publications

References 18 publications

Sampling grid density and lime recommendation in an Oxisol

Sampling grid density and lime recommendation in an Oxisol

Correction of Acidity of a Brazilian Cerrado Oxisol with Limestone and Wood Ash on the Initial Growth of Cowpea

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

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