Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/30198
Título: Aggregates morphometry in a Latosol (Oxisol) under different soil management systems
Título(s) alternativo(s): Morfometria de agregados de um Latossolo sob diferentes sistemas de manejos do solo
Palavras-chave: Image analyses
Soil structural quality
Conservationist management systems
Análise de imagem
Qualidade estrutural do solo
Sistemas de gerenciamento conservacionistas
Data do documento: Jan-2016
Editor: Universidade Estadual de Londrina
Citação: CARDUCCI, C. E. et al. Aggregates morphometry in a Latosol (Oxisol) under different soil management systems. Semina: Ciências Agrárias, Londrina, v. 37, n. 1, p. 33-42, jan./fev. 2016.
Resumo: Changes in soil physical properties are inherent in land use, mainly in superficial layers. Structural alterations can directly influence distribution, stability and especially morphometry of soil aggregates, which hence will affect pore system and the dynamic process of water and air in soil. Among the methods used to measure these changes, morphometry is a complementary tool to the classic methods. The aim of this study was to evaluate structural quality of a Latosol (Oxisol), under different management systems, using morphometric techniques. Treatments consisted of soil under no-tillage (NT); pasture (P), in which both had been cultivated for ten years, and an area under native vegetation (NV – Savannah like vegetation). Aggregates were sampled at depths of 0-0.10 and 0.10-0.20 m, retained on sieves with 9.52 – 4.76 mm, 4.76 – 1.0mm, 1.0 – 0.5mm diameter ranges. Aggregate morphometry was assessed by 2D images from scanner via QUANTPORO software. The analyzed variables were: area, perimeter, aspect, roughness, Ferret diameter and compactness. Moreover, disturbed samples were collected at the same depths to determine particle size, aggregate stability in water, water-dispersible clay, clay flocculation index and organic matter content. It was observed that different soil management systems have modified soil aggregate morphology as well as physical attributes; and management effects’ magnitude increased from NT to P.
URI: http://repositorio.ufla.br/jspui/handle/1/30198
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