Mineralogia de um latossolo vermelho distrófico submetido a diferentes manejos por 24 anos

Gonçalves, Daniele Freitas; Leite, Wellington; Brinatti, André Maurício; Saab, Sérgio da Costa; Iarosz, Kelly C.; Mascarenhas, Yvonne P.; Carneiro, Paulo Irajara Borba; Rosa, Jadir Aparecido

doi:10.1590/s0100-06832008000700006

Cited by 13 publications

(3 citation statements)

References 15 publications

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“…A corresponding sample of this pedomaterial was earlier analyzed in the Laboratory of Soil Physics and Environmental Sciences, of the Physics Department at the State University of Ponta Grossa (UEPG). The aim at that time was to evaluate differences in mineralogy [9] and the organic matter composition [10] of samples from agricultural sites under no-tillage system, by comparing them with those under traditional agriculture practices. This soil is particularly rich in iron oxides, specifically hematite and goethite [9], in its mineral fraction.…”

Section: Methodsmentioning

confidence: 99%

Mössbauer analysis of high-energy mechanical-milled sand fraction of a magnetic soil developing on basalt

et al. 2011

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A sample of the coarse sand fraction from the soil material of the Ahorizon (0-0.2 m from the soil surface) of a dusky red magnetic Oxisol was submitted to high-energy mechanical milling for different times. This assay aimed mainly at (a) monitoring the individualization of strongly aggregated mineral particles, and (b) measuring the effect of the milling pressure on the mineralogy changes of the material. These data are also intended to experimentally subside any physical model describing the mechanical behavior of the superficial soil layer that is subjected to intensive machine management, in agriculture fields. Powder X-ray data reveal that some mineralogical phases, notably gibbsite, disappear soon after the first few hours milling. The 298 K-transmission Mössbauer spectrum for the non-milled sand sample shows a qualitatively typical pattern for the sand fraction of basalt derived soils, with magnetically ordered sextets, assignable mainly to hematite and maghemite, and an intense central (super)paramagnetic Fe 3+ doublet. For the milled samples, spectra revealed progressive spectral reduction of the magnetic hyperfine structure, with concomitant increase of relative subspectral areas due to (super)paramagnetic phases, as the milling time increased. This result is consistent with the reduction 10 J.F.M. Borges et al.of measured saturation magnetization, from 4.96(8) J T −1 kg −1 , for the non-milled sample, to 3.26(7) J T −1 kg −1 , for the sample milled for 8 hours.

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Section: Methodsmentioning

confidence: 99%

Mössbauer analysis of high-energy mechanical-milled sand fraction of a magnetic soil developing on basalt

et al. 2011

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“…The experimental site used for this study belongs to the Paraná Rural Development Institute -Iapar-Emater, located in Ponta Grossa, State of Paraná, southern Brazil (25º 09' 06,2" S, 50º 09' 15,19" W, 862 m above sea level). The soil has a clay texture (726; 212 and 62 g kg −1 of clay, silt, and sand, respectively), and is classified as Oxisol (Latossolo Vermelho Distroférrico, Brazilian classification; Rhodic Eutrudox, US Soil Taxonomy), formed from Ponta Grossa Formation, with the presence of the following minerals: gibbsite, kaolinite, halloysite, montmorillonite, hematite, rutile, anatase, goethite and quartz [21]. The climate of the region is Cfb (humid subtropical, without dry season) according to Koppen's classification [22].…”

Section: Experimental Sitementioning

confidence: 99%

Soil Health Assessment in Brazilian Subtropical Oxisol Under Land Use and Long-term Tillage Systems

Becker,

Giarola,

Paula

et al. 2024

Braz. arch. biol. technol.

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Soil health has been used worldwide for soil monitoring in different soil use and management. The objective of the study was to evaluate, in a Subtropical Oxisol of the Campos Gerais region in Paraná state, if the Visual Evaluation of Soil structure (VESS) and Soil Management Assessment Framework (SMAF) approaches allow evaluate soil response to various land uses or soil tillage used in the region. The land use and tillage practices consist of conventional tillage, minimum tillage, no-tillage, and secondary forest. The SMAF was used as a tool to evaluate the soil health using five indicators: pH, phosphorus, potassium, bulk density, and soil organic carbon. The VESS was used to determine the soil structural quality. The secondary forest showed the best soil structure and tillage practices declined soil structure quality. Similarly, the soil health index was higher in secondary forest compared to tillage practices, and the tillage had little effect on soil health. The SMAF showed differences between land use and tillage practices. The VESS method could be used as a complementary tool for monitoring the soil health.

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“…This soil is formed from Ponta Grossa Formation, with the presence of the following Brazilian Archives of Biology and Technology. Vol.63 no.spe: e20190489, 2020 www.scielo.br/babt minerals: gibbsite, kaolinite, halloysite, montmorillonite, hematite, rutile, anatase, goethite and quartz [28]. The climate of the region is Cfb (humid subtropical, without dry season) according to Koppen's classification [29].…”

Section: Experimental Site and Managementmentioning

confidence: 99%

Selection of Indicators to Discriminate Soil Tillage Systems and to Assess Soil Quality in a Red Latosol

Kazmierczak

Giarola

Riferte

et al. 2020

Braz. arch. biol. technol.

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The soil tillage practiced over a long period of time impacts soil quality. The first step in soil quality assessment is to select which indicators should be used. The objective of this study was to identify the soil attributes that discriminate soil tillage systems and can be used as indicators for soil quality assessments. Sixteen soil physical and chemical attributes were evaluated: macroporosity (MaP), microporosity (MiP), total porosity (TP), bulk density (BD), field-saturated hydraulic conductivity (Kfs), soil resistance to penetration (SRP), pH (H2O), pH (CaCl2), aluminium (Al), calcium (Ca), magnesium (Mg), potassium (K), available phosphorus (P), total organic carbon (TOC), cation exchange capacity (CEC) and base saturation (BS), of a very clayey Red Latosol, cultivated for a long period in no-till (NT), conventional tillage (CT) and minimum tillage (MT). The soil attributes (indicators) were selected using canonical discriminant analysis. MiP, Kfs, pH (CaCl2), Ca, Mg, CEC e BS were the most efficient indicators to discriminate soil tillage systems. In the indicator interpretation step was sustained MiP as the indicator that represents the function of physical stability and support, Kfs as the indicator that represents the function of water relations, BS as the indicator that represents the function of nutrient cycling and pH (CaCl2) as the indicator that represents the function of filtering and buffering. These indicators can be used for future soil quality assessment and monitoring of tillage systems in similar regions and conditions.

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Mineralogia de um latossolo vermelho distrófico submetido a diferentes manejos por 24 anos

Cited by 13 publications

References 15 publications

Mössbauer analysis of high-energy mechanical-milled sand fraction of a magnetic soil developing on basalt

Mössbauer analysis of high-energy mechanical-milled sand fraction of a magnetic soil developing on basalt

Soil Health Assessment in Brazilian Subtropical Oxisol Under Land Use and Long-term Tillage Systems

Selection of Indicators to Discriminate Soil Tillage Systems and to Assess Soil Quality in a Red Latosol

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