Relationship between acidity and chemical properties of brazilian soils

Abreu-Junior, Cassio Hamilton; Muraoka, Takashi; Lavorante, André F.

doi:10.1590/s0103-90162003000200019

Cited by 71 publications

(43 citation statements)

References 8 publications

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“…Moreover, it is possible to infer about a strong relationship between the contents of Ca 2+ and the values of SB in the studied soils. These relationships are according to the results of Abreu Jr. et al [16] and Mg 2+ are linked with the use of limestone to correct the soil acidity and supply these cations. The interaction between the evaluated factors was not significant for Ca 2+ , Mg 2+ , and SB.…”

Section: Resultsmentioning

confidence: 88%

Short-Term Changes in Fertility Attributes and Soil Organic Matter Caused by the Addition of EM Bokashis in Two Tropical Soils

Lima

Fontenelle

Silva

et al. 2015

International Journal of Agronomy

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The present work aimed to evaluate the behavior of ten fertility attributes of soil organic matter physical fractions and total organic carbon upon addition of three EM Bokashis to a Rhodic Ferralsol (FRr) and a Dystric Cambisol (CMd). An experiment was carried out in greenhouse in which the soils were placed into plastic trays and cultivated with tomato. A completely randomized design was used with four repetitions and factorial scheme of 2 × 3 + 2, consisting of two soils (FRr and CMd), three EM Bokashis (Poultry Manure Bokashi (BPM); CNPH Bokashi (BC); and Cattle Manure Bokashi (BCM)), and two controls (both soils without addition of Bokashi). The following fertility attributes were evaluated: pH, Ca 2+ , Mg 2+ , K + , Na + , P, SB, H + Al, CEC, and . Particulate organic carbon (POC) and mineral-associated organic carbon (MOC) and total organic carbon (TOC) were also investigated. Finally, the Principal Component Analysis was conducted in order to identify possible patterns related to soils when fertilized with EM Bokashi. The addition of EM Bokashi increased the soil fertility and contents of POC. Different EM Bokashi presents distinguished effects on each soil. The PCA suggests that BPM presents higher capacity to modify the analyzed chemical attributes.

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Section: Resultsmentioning

confidence: 88%

Short-Term Changes in Fertility Attributes and Soil Organic Matter Caused by the Addition of EM Bokashis in Two Tropical Soils

Lima

Fontenelle

Silva

et al. 2015

International Journal of Agronomy

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“…The XRF (Jones et al, 2000;Alves et al, 2007;Alves et al, 2008) as well as the ICP-AES (Fadigas et al, 2002;Abreu Jr., et al, 2003;Giarola et al, 2009) are useful techniques in the determination of the elementary soil chemical composition. The former, however, requires larger samples in relation to the latter.…”

Section: Methodsmentioning

confidence: 99%

Mineralogical characterization of a highly-weathered soil by the Rietveld Method

Brinatti¹,

Mascarenhas²,

Pereira

et al. 2010

Sci. agric. (Piracicaba, Braz.)

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The mineralogical characterization through mineral quantification of Brazilian soils by X-ray diffraction data using the Rietveld Method is not common. A mineralogical quantification of an Acric Ferralsol from the Ponta Grossa region, state of Paraná, Brazil, was carried out using this Method with X-Ray Diffraction data to verify if this method was suitable for mineral quantification of a highly-weathered soil. The A, AB and B 3 horizons were fractioned to separate the different particle sizes: clay, silt, fine sand (by Stokes Law) and coarse sand fractions (by sieving), with the procedure free of chemical treatments. X-ray Fluorescence, Inductively Coupled Plasma Atomic Emission Spectrometry, Infrared Spectroscopy and Mössbauer Spectroscopy were used in order to assist the mineral identification and quantification. The Rietveld Method enabled the quantification of the present minerals. In a general way, the quantitative mineralogical characterization by the Rietveld Method revealed that quartz, gibbsite, rutile, hematite, goethite, kaolinite and halloysite were present in the clay and silt fractions of all horizons. The silt fractions of the deeper horizons were different from the more superficial ones due to the presence of large amounts of quartz. The fine and the coarse sand fractions are constituted mainly by quartz. Therefore, a mineralogical quantification of the finer fraction (clay and silt) by the Rietveld Method was successful. Key words: Acric Ferralsol, clay fraction, silt fraction, mineralogical quantification, X-ray diffraction Caracterização mineralógica de um solo altamente intemperizado pelo Método de RietveldRESUMO: A caracterização mineralógica por meio da quantificação dos minerais presentes em solos brasileiros por difração de raios X usando o Método de Rietveld é, ainda, pouco comum. Neste trabalho foi realizada a quantificação mineralógica de um Latossolo Vermelho ácrico da região de Ponta Grossa, Paraná, Brasil, utilizando o Método de Rietveld com dados de Difração de Raios X e também verificado se o método foi adequado na quantificação mineral de um solo altamente intemperizado. Os horizontes A, AB e B 3 foram separados fisicamente nas frações: argila, silte, areia fina (por meio da Lei de Stokes) e areia grossa (por peneiramento) sem qualquer tratamento químico. As técnicas de Fluorescência de raios X, Espectroscopia de Emissão Atômica com Fonte de Plasma Induzido, Espectroscopia de Infravermelho e Espectroscopia Mössbauer foram utilizadas para auxiliar na identificação e quantificação dos minerais. O Método de Rietveld possibilitou a quantificação dos minerais presentes nas frações argila e silte de todos os horizontes: quartzo, gibbsita, rutílio, hematita, goethita, caulinita e haloisita. Na fração silte os horizontes mais profundos são diferentes do mais superficial devido à presença de grandes quantidades de quartzo. As frações areia fina e grossa são constituídas principalmente de quartzo. Portanto, o Método de Rietveld foi adequado para quantificação dos minerais, princ...

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“…The phytotoxicity of the aluminum in these areas has already been demonstrated by different researchers (Abreu et al 2003, Wenzl et al 2003, Mendonça et al 2006, mainly in Latossolos. Lime and fertilizer inputs might minimize and even eliminate such problems, but technical recommendations are often not implemented by the farmers of the region.…”

mentioning

confidence: 85%

Fertility and acidity status of latossolos (oxisols) under pasture in the Brazilian Cerrado

Vendrame

Brito

Guimarães

et al. 2010

An. Acad. Bras. Ciênc.

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The Cerrado region, with over 50 million hectares of cultivated pasture, provides 55% of Brazilian beef production. Previous investigations have shown that about 70-80% of this pasture is affected by some kind of degradation, leading to low productivity. However, until now, few surveys have been carried out on a regional scale. The aim of the present work is both to assess the fertility and acidity levels of Cerrado soils under pasture and compare the variability of the soils characteristics on a regional scale. Two soil depths were sampled in different places within the studied area: (1) a surface horizon (0.0-0.2 m) in order to evaluate its fertility and acidity status for pasture, and (2) a subsurface horizon (0.6-0.8 m), used for classification. Most of soils had levels of nutrients below the reference values for adequate pasture development. Whatever the texture, about 90% of soils had low or very low availability of phosphorus. Only 7 to 14% of soils had low pH, high exchangeable aluminum, and aluminum saturation above the critical acidity level. Except for nitrogen, no significant difference was found between Latossolos Vermelhos and Latossolos Vermelho-Amarelos.

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Relationship between acidity and chemical properties of brazilian soils

Cited by 71 publications

References 8 publications

Short-Term Changes in Fertility Attributes and Soil Organic Matter Caused by the Addition of EM Bokashis in Two Tropical Soils

Short-Term Changes in Fertility Attributes and Soil Organic Matter Caused by the Addition of EM Bokashis in Two Tropical Soils

Mineralogical characterization of a highly-weathered soil by the Rietveld Method

Fertility and acidity status of latossolos (oxisols) under pasture in the Brazilian Cerrado

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