Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/37241
Title: Intervalo hídrico ótimo e porosidade de solos cultivados em área de proteção ambiental do sul de Minas Gerais
Keywords: Compactação
Sustentabilidade ambiental
Disponibilidade hídrica do solo
Compaction
Environmental sustainability
Soil water availability
Issue Date: 2009
Publisher: Sociedade Brasileira de Ciência do Solo
Citation: LIMA, V. M. P. et al. Intervalo hídrico ótimo e porosidade de solos cultivados em área de proteção ambiental do sul de Minas Gerais. Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 33, p. 1087-1095, 2009.
Abstract: Restrictive physical conditions for an adequate plant development reduce the productive capacity of soils and environmental sustainability. An important parameter to express these restrictions is the least limiting water range (LLWR), which is used in combination with soil physical properties that influence plant development. To evaluate the LLWR and porosity of soils under coffee and pasture in the Capituvas River microbasin, a representative area of the Coqueiral Resereve was chosen. Undisturbed samples of a typical Dystrophic Red Latosol (LVd- Oxisol), typical Eutrophic Red Argisol (PVe-Ultisol) and typical Dystrophic Haplic Cambisol (CXbd- Inceptisol) were collected from the layers 0–5, 20–25 and 40–45 cm. Pores with a diameter of > 145 μm were most affected by the management. Although no statistical differences were verified among the micropores (pores < 50 μm), variations occurred in LLWR, in the following order: LVd > CXbd > PVe. It is possible to conclude that LLWR is a reliable parameter that could be used to quantify alterations that occur in the water availability of soils under different use and management systems.
URI: http://repositorio.ufla.br/jspui/handle/1/37241
Appears in Collections:DCS - Artigos publicados em periódicos
DEG - Artigos publicados em periódicos



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