Agrupamento De Pedons De Cambissolos Húmicos Com Base Em Atributos Físicos E Químicos Utilizando a Estatística Multivariada

Santos, Pablo Grahl dos; Bertol, Ildegardis; Miquelluti, David José; Almeida, Jaime Antônio de; Mafra, Álvaro Luiz

doi:10.1590/01000683rbcs20130415

Cited by 3 publications

(3 citation statements)

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“…Os teores médios de argila e MO foram de 25% e 5,8%, respectivamente. Estes valores ocorrem em grande parte dos Cambissolos da região (SANTOS et al, 2015;DORTZBACH et al, 2016).…”

Section: Resultsunclassified

Influência da irrigação e da fertirrigação no rendimento de frutos de macieiras ‘Kinkas’

Cechinel

Ciotta

Nava

et al. 2022

RAC

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O objetivo deste trabalho foi avaliar a concentração de nutrientes nas folhas e o rendimento de maçãs em função do uso da irrigação e da forma de aplicação de adubos ao solo (convencional sólida ou fertirrigação). O experimento foi conduzido na safra 2014/15 em um pomar instalado sobre um Cambissolo Húmico, em São Joaquim (SC), com o cultivar Kinkas. Os tratamentos foram: adubação sólida convencional (ASC); adubação sólida convencional + irrigação (ASC+I); fertirrigação (F); e fertirrigação + irrigação (F+I). Utilizou-se o delineamento experimental de blocos ao acaso, com oito repetições. A necessidade e o tempo de irrigação foram determinados pela média das leituras dos tensiômetros instalados entre as unidades experimentais. Foram avaliados os teores de Ca, Mg, P e K no solo e nas folhas, os parâmetros de produtividade, sólidos solúveis, acidez titulável e firmeza de polpa. O número e a produtividade de frutos, assim como os atributos de solo, não foram afetados pelos tratamentos. Nas folhas, os teores de Ca foram maiores no tratamento com I+F em relação ao com ASC+I; para Mg, os maiores teores ocorreram nos tratamentos com ASC e ASC+I; para o K, os tratamentos com I+F e F foram os que apresentaram os maiores teores. A menor concentração de açúcares nos frutos ocorreu no tratamento com fertirrigação. Apesar de afetar a composição das folhas, a forma de aplicação dos adubos e a irrigação não afetaram a produtividade de maçãs.

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“…Os teores médios de argila e MO foram de 25% e 5,8%, respectivamente. Estes valores ocorrem em grande parte dos Cambissolos da região (SANTOS et al, 2015;DORTZBACH et al, 2016).…”

Section: Resultsunclassified

Influência da irrigação e da fertirrigação no rendimento de frutos de macieiras ‘Kinkas’

Cechinel

Ciotta

Nava

et al. 2022

RAC

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“…Thus, these attributes are important to distinguish environments and characterize soils. Santos et al (2015) used multivariate analysis to evaluate the variability of attributes of Cambissolos in Lajes SC, Brazil, and found chemical and physical attributes as determinant factors for differentiating soil profiles, with organic carbon content, active and potential acidity, and base saturation as the most important chemical attributes; and pore volume, soil density, and total porosity as the most important physical attributes. Martins et al (2010) used multivariate analysis in Luvissolos of the semiarid region of Pernambuco and found chemical and microbiological attributes as the most sensitive for the distinction of the environments.…”

Section: Resultsmentioning

confidence: 99%

Genesis and Characteristics of Soils of the Santanamountain Range in the Seridó Region, Rio Grande Do Norte, Brazil

et al. 2018

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Rio Grande do Norte has mountain formations with edaphoclimatic conditions different from those predominating in the state, presenting deeper,acid soils, and milder climate. Among these formations, is the Santana mountain range, which is part of the Serra do Martins Formation. The objective of this work was to interpret the pedogenesis of the representative soils of the Santana mountain range through morphological, physical, and chemical characterizations of soil profiles and evaluate the effect of these attributes on the distribution of pedological forms along the landscape using multivariate analysis. Morphological, physical, and chemical analyses of seven soil profiles of the Santana mountain range were performed. The soils were classified according to the Brazilian Soil Classification System and the data subjected to multivariate analysis. The representative soil classes found were: LATOSSOLO AMARELO Distrófico argissólico; LATOSSOLO AMARELO Eutrófico argissólico; NEOSSOLO QUARTZARÊNICO Órtico típico; NEOSSOLO LITÓLICO Eutrófico fragmentário; NEOSSOLO REGOLÍTICO Eutrófico típico and CAMBISSOLO HÁPLICO Tb Eutrófico léptico. According to the analysis of the morphological attributes, the parent material had great influence on the formation of the different soil classes found in the Santana mountain range. The soil textural classes varied from sand to sandy clay loam. According to the analysis of the chemical attributes, the soil profiles presented acid reaction, great variation of base saturation, and low electrical conductivity. The multivariate analysis established groups of representative soil profiles of the Santana mountain range through the distinction of their physical and chemical attributes, mainly of subsurface diagnostic horizons.

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“…This can deepen knowledge regarding the pedogeomorphological relationships of these soils (Carvalho Junior et al, 2008) and taxonomic interpretation of them by means of numerical classification (Pedron et al, 2012). Multivariate statistical methods can potentially be applied in pedological surveys and in the study of soil properties (Webster and Oliver, 1990;Kravchenko et al, 2002), which would make it possible to predict the occurrence of similar pedons and to delimit the mapping units (Demattê and Garcia, 1999;Demattê and Nanni, 2003;Santos et al, 2015a). …”

Section: Introductionmentioning

confidence: 99%

Pedological Heterogeneity of Soils Developed from Lithologies of the Pirambóia, Sanga-do-Cabral, and Guará Geological Formations in Southern Brazil

Santos

Almeida

Sequinatto

et al. 2017

Rev. Bras. Ciênc. Solo

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ABSTRACT:The source material is one of the factors that most influence soil genesis and the mainly responsible for the nature, composition, and behavior of the soil. Given the geological complexity of the Santa Maria River basin, the objective of this study was to investigate whether the new lithologies described recently may be responsible for a greater variation in soil properties, as well as in the soil taxonomy itself. The study area is located in the municipality of Rosário do Sul, RS, Brazil at 30° 15' 28" S and 54° 54' 50" W, with average altitude of 132 m and climate type Cfa. This study was supported by a cartographic base composed of topographic charts, geological maps, satellite images, digital elevation models, and maps of geomorphometric variables, with the support of GPS receivers and GIS. Topolithosequences were defined from soils developed from the Pirambóia, Sanga-do-Cabral, and Guará Formations, and soil profiles were chosen based on types of source materials, variations in relief, and altitude. A classical model of slope compartmentalization was applied for correlation of the geomorphic surfaces with pedogenesis. Soil profiles were described in a general and morphological manner, and soil samples were collected for analysis. The physical and chemical properties determined were particle size, active and potential acidity, organic C content, Ca . The sum of bases, CEC, flocculation activity and degree of flocculation of the clay fraction, and base (V), aluminum (m), and sodium saturation were calculated. Soil properties were evaluated through factor analysis and grouping, which allowed profiles to be grouped based on their variables and identification of which variables were preponderant in distinguishing them. Furthermore, multivariate analysis allowed statistical differentiation of the profiles in the same lithostratigraphic unit and in different relief positions, and also differentiation of soils developed from different source materials and occupying similar positions in the pedo-landscape, through the formation of homogeneous groups of profiles linked by their degree of similarity.

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Agrupamento De Pedons De Cambissolos Húmicos Com Base Em Atributos Físicos E Químicos Utilizando a Estatística Multivariada

Cited by 3 publications

References 10 publications

Influência da irrigação e da fertirrigação no rendimento de frutos de macieiras ‘Kinkas’

Influência da irrigação e da fertirrigação no rendimento de frutos de macieiras ‘Kinkas’

Genesis and Characteristics of Soils of the Santanamountain Range in the Seridó Region, Rio Grande Do Norte, Brazil

Pedological Heterogeneity of Soils Developed from Lithologies of the Pirambóia, Sanga-do-Cabral, and Guará Geological Formations in Southern Brazil

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