Comparação tecnológica, mineralógica e química da Formação Corumbataí em dois polos cerâmicos distintos visando sua aplicação na indústria de revestimentos cerâmicos

Christofoletti, Sergio Ricardo; Moreno, Maria Margarita Torres

doi:10.1590/0366-69132015613601951

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…Mica and feldspar minerals contain the elements Al, K, Ca, Mg, Si, and Fe. Mica is a clay mineral (Coringa, Couto, Perez, & Torrado, 2012); therefore, the derivative of these minerals can form primary clay minerals such as kaolinite and secondary as gypsite and hematite (Christofoletti & Moreno, 2015). In a hydromorphic environment, as occurred in profile 2, gleization processes were common, and thus the formed material may have expansive clays (Coringa et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Agricultural potential and soil use based on the pedogenetic properties of soils from the cerrado-caatinga transition

Ratke¹,

Campos²,

Inda³

et al. 2020

SCA

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The sustainable use of soil requires a broad knowledge of its genesis, morphology, properties, and distribution in the landscape. Thus, the objective of this study was to characterize the pedogenetic attributes of representative soils from the cerrado-caatinga transition of the Gurguéia river basin to indicate their agricultural potential and limitations for the implementation of agroforestry systems. National and international soil classification systems were used to define the soil classes. The limiting factors and agricultural potential were characterized following the evaluation system of the agricultural potential of Brazilian land. In general, profiles 1, 3, 5, and 6 had a low nutrient budget and a sandy to loam texture. Profiles 2, 4, and 7 showed high clay content and nutrient budget. The soil profiles were classified as Ustic Quartzipsamments, Udic Haplusterts, Xanthic Haplustox, Arenic Kanhaplustults, Typic Haplustox, and Aridic Dystrustept based on their pedogenetic characteristics. Udic Haplusterts and Arenic Kanhaplustults soils display restrictions regarding the planting of forests owing to oxygen and soil depth limitations. The other soil classes had adequate physical properties for the implementation of agricultural systems and pastures, including good drainage and medium texture; however, they had low natural fertility, and thus require technologies for soil acidity correction and fertilization. Ustic Quartzipsamments and Ustic soils require the implementation of conservation systems, such as agroforestry, to avoid degradation.

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Section: Discussionmentioning

confidence: 99%

Agricultural potential and soil use based on the pedogenetic properties of soils from the cerrado-caatinga transition

Ratke¹,

Campos²,

Inda³

et al. 2020

SCA

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“…These results, in most of the cases, corroborate the available literature on their mineralogy. [38][39][40] Table 4 shows the results of the descriptive analysis of LDM and the nutrients contents found in the soybean leaves after cultivation in soil incubated with mining coproducts. The coefficient of variation values (CV) ranged from 9.97 % for Ca and 91.02 % for Mn.…”

Section: Data Processing and Statistical Analysismentioning

confidence: 99%

Vis–NIR spectroscopy: from leaf dry mass production estimate to the prediction of macro- and micronutrients in soybean crops

Rodrigues

Nanni

Cézar

et al. 2020

J. Appl. Rem. Sens.

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Our work aimed to evaluate the use of visible-near-infrared (Vis-NIR) spectroscopy for predicting the production of leaf dry mass (LDM), as well as macro-and micronutrients contents of soybean leaves grown after application of limestone-mining coproducts. The treatments were arranged within a triple factorial scheme (6 × 2 × 2 þ 2) and placed into pots in a greenhouse. We evaluated the following factors: type of input (limestone-mining coproducts), input particle size (filler and powder), and soil class (Arenosol and Ferralsol). After inputs incubation, the soybean was sown. Then, 42 days after sowing, we collected the foliar spectra, as well as leaves, for further analysis of the contents of macro-and micronutrients in leaves and production of LDM. We managed to adjust models at the stage of prediction with R 2 p > 0.50 and RPD p > 1.50 for the variables LDM, P, K, Mg, S, and Zn, with emphasis on the first four, which presented R 2 p above 0.65. Therefore, we conclude that Vis-NIR spectroscopy has a potential for predicting LDM and the nutrients contents of soybean subjected to the application of limestonemining coproducts, with advantages such as speed, low cost, and no use of reagents that are toxic to the environment. © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Comparação tecnológica, mineralógica e química da Formação Corumbataí em dois polos cerâmicos distintos visando sua aplicação na indústria de revestimentos cerâmicos

Cited by 2 publications

References 4 publications

Agricultural potential and soil use based on the pedogenetic properties of soils from the cerrado-caatinga transition

Agricultural potential and soil use based on the pedogenetic properties of soils from the cerrado-caatinga transition

Vis–NIR spectroscopy: from leaf dry mass production estimate to the prediction of macro- and micronutrients in soybean crops

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