Resistência à penetração em Neossolo Quartzarênico submetido a diferentes formas de manejo
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Data
2012
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Resumo
The replacement of native forests for agrosystems causes changes in soil structure. The degree of these
changes depends on the intensity of use and soil management, climatic conditions and soil physical and
chemical properties. The aim of this study was to evaluate the soil bulk density (Bd), soil resistance to
penetration and organic matter content of an Ortic Quartzarenic Neosol under four land use systems:
native forest, agroforestry, pasture and other area recently converted to agricultural use. In each system
seven soil profiles were selected and samples were collected in July 2010 and January 2011. The soil
resistance to penetration was determined in 0-40 cm depth using an impact penetrometer, Planasucar
Stolf IAA model. The water content in the soil layers was determined in 0-20 and 20-40 cm depth. The
organic matter and soil bulk density were deternied in layers 0-5, 5-10, 10-20 and 20-40 cm. Among the
evaluated systems, the lowest values of soil bulk density and soil resistance to penetration were found in
agroforestry and the highest values were obtained in the pasture. In the area recently converted to
agricultural use the results obtained were similar to those obtained under native forest.
Descrição
Palavras-chave
Conservação do solo, Indicadores de qualidade do solo, Compactação do solo, Soil conservation, Soil compaction, Soil quality indicators
Citação
FREITAS, Idelfonso C. de; SANTOS, Felipe C. V. dos ; CUSTÓDIO FILHO, Ronaldo de O. ; SILVA, Nelson R. da A.; CORRECHEL, Vladia. Resistência à penetração em Neossolo Quartzarênico submetido a diferentes formas de manejo. Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 16, n. 12, p. 1275-1281, 2012.