Structural quality of soils cultivated with coffee and pasture in an environmental protection area

Revista Brasileira de Ciência do Solo

Vico Mendes Pereira Lima¹  Ciro Augusto De Souza Magalhães¹  Geraldo César De Oliveira¹  José Maria De Lima¹ 

[1] ,UFLA Department of Soil Science Lavras MG

关键词: compression;    environmental sustainability;    soil water availability;    load support capacity;    soil penetration resistance;    compactação;    sustentabilidade ambiental;    disponibilidade hídrica do solo;    capacidade de suporte de carga;    resistência do solo à penetração;   

DOI  :  10.1590/S0100-06832010000300012

来源: SciELO

【 摘 要 】

Studies of soils in Environmental Protection Areas (EPAs) are of great importance, because they are an essential component of ecosystems, directly interfering in environmental sustainability. The objective of this study was to evaluate the structural quality of soil cultivated with coffee and used as pasture in the Capituva's River microbasin, which is located in the Environmental Protection Area in Coqueiral, south of the state of Minas Gerais. Uniaxial compression test (preconsolidation test) and soil resistance to penetration were used. Undisturbed samples were taken from the surface layer (0-5 cm) of the soils in the area: a typic dystrophic Red Latosol (LVd - Oxisol), a typic eutrophic Red Argisol (PVe - Ultisol), and a typic dystrophic Haplic Cambisol (CXbd - Inceptisol). A significant linear positive correlation was observed between the results of the preconsolidation test and soil resistance to penetration. Load bearing capacity of soil could be estimated accordingly by means of penetration resistance for LVd, PVe, and CXbd. Cambisol - CXbd showed lower loading support capacity and resistance to penetration than LVd and PVe, due to the better crop management in this soil that resulted in higher physical quality which accounts for higher production and environmental sustainability.

【 授权许可】

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