MACRO AND MICROMORPHOLOGIC INDICATORS OF PHYSICAL CLAYEY RED LATOSOL CULTIVATED WITH SUGARCANE
Item
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Título
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MACRO AND MICROMORPHOLOGIC INDICATORS OF PHYSICAL CLAYEY RED LATOSOL CULTIVATED WITH SUGARCANE
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Mercator
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UEG
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UFG
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Autor
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Adriana Aparecida Silva
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Selma Simões Castro
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Assunto
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Micromorfologia
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Saccharum spp
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compactação
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estrutura
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Abstract
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The southwest of Goiás stands out in the process of the recent expansion of sugarcane plantation, especially in micro-region of Quirinópolis, where previously areas of annual crops were replaced, especially soybeans, and then pasture areas on clayey dystroferric Red Latosol (LVdf) which has a high potential for compaction. The aim of this work was to evaluate the process of compaction such soils cultivated with sugarcane, considering the selected profiles were decompressed, corrected and fertilized before planting sugarcane. Such profiles have along with the current use of sugarcane varying in relation to previous use (soybean/sugarcane, pasture/sugarcane and pasture succession/soybean/sugarcane), and the management with and without fertigation with vinasse, and an area of remaining natural vegetation as control. Macro and micromorphological indicators, followed by tests evaluated in laboratory as penetration resistance and physic-hydric analysis. The results indicated surface and subsurface compaction of the soil profile studied, regardless of previous uses, being the main indicators the presence of structure tending to laminar few porous in compaction levels, and increased of soil density and of penetration resistance.
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volume
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14
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issue
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3
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Páginas
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169-185
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Date
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2015
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Língua
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pt
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doi
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10.4215/RM2015.1403.0010
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issn
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19842201
