2009
DOI: 10.1590/s0100-06832009000400023
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Abstract: A pedogênese dos solos planossólicos, especialmente da região do Agreste de Pernambuco, tem sido pouco estudada, havendo indicações e dúvidas relativas a alguns aspectos como a possível dualidade ou retrabalhamentos diferenciados na formação do material de origem, total das perdas e ganhos e a relativa mobilidade dos principais elementos constitutivos durante a evolução dos solos. Foram estudados três solos com marcantes contrastes texturais em uma topossequência da região. Foram estudados três solos com marca… Show more

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Cited by 10 publications
(10 citation statements)
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“…Some of these fragments penetrated cracks between the columnar structures of the Btn horizon, in profiles 3 and 4 (Table 1). Parahyba et al (2009), studying Planosols, also in the state of Pernambuco, observed some indication of reworking of more superficial materials and concluded that the studied soils had an autochthonous origin. However, as pointed out by Michelon et al (2010), it is difficult to confirm the transport of material, because the processes of weathering and pedogenesis tend to level the differences that allow for the recognition of different materials.…”
Section: Morphological Attributesmentioning
confidence: 98%
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“…Some of these fragments penetrated cracks between the columnar structures of the Btn horizon, in profiles 3 and 4 (Table 1). Parahyba et al (2009), studying Planosols, also in the state of Pernambuco, observed some indication of reworking of more superficial materials and concluded that the studied soils had an autochthonous origin. However, as pointed out by Michelon et al (2010), it is difficult to confirm the transport of material, because the processes of weathering and pedogenesis tend to level the differences that allow for the recognition of different materials.…”
Section: Morphological Attributesmentioning
confidence: 98%
“…Sstudying Planosols in the state of Pernambuco, Parahyba et al (2009Parahyba et al ( , 2010 concluded that the studied soils had an allochthonous origin, with an expressive textural contrast formed by a combination of pedogenetic processes, such as clay eluviation-illuviation, in situ clay formation and selective clay loss in the horizon due to lateral movements through mechanical drag.…”
Section: Pro Le 2 Pro Le 1 Pro Le 4 Pro Lementioning
confidence: 99%
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“…Oliveira et al (2009) andParahyba et al (2009) observed that the sodic character of the soils they studied in northeastern Brazil resulted from the incongruent dissolution of easily weathered primary minerals (van Breemen and Buurman, 2002). This hypothesis was rejected for the soils studied here, since the only profile which had easily weatherable primary minerals was the P3, and even so in amounts too small to confer a sodic character to the horizon.…”
Section: Soil Properties and Pedogenetic Processesmentioning
confidence: 70%
“…Most of the studies involving sodic soils in Brazil were developed in the Northeast region (Oliveira et al, 2009;Parahyba et al, 2009;Ferreira et al, 2016a,b), where a semi-arid climate predominates and rainfall rarely exceeds 800 mm yr -1 . This condition favors the incongruent dissolution of easily alterable primary minerals with high levels of Na + (e.g., albite) and disfavors leaching of the soil bases, resulting in the development of soils with a solodic or sodic character.…”
Section: Introductionmentioning
confidence: 99%