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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba; Embrapa Soja. |
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Data corrente: |
01/02/1995 |
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Data da última atualização: |
01/02/1995 |
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Autoria: |
HULUGALLE, N. R. |
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Título: |
Long-term effects of land clearing methods, tillage systems and cropping systems on surface soil properties of a tropical Alfisol in S.W. Nigeria. |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
Soil Use and Management, v.10, n.1, p.25-30, 1994. |
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Idioma: |
Inglês |
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Conteúdo: |
The long-term effects of land clearing methods (manual, shear blade, tree-pusher/root-rake combination, traditional), tillage systems (disc ploughing, mechanized no-tillage, traditional) and cropping systems(annual cropping, alley cropping, grazed pasture) on surface soil physical and chemical properties were evaluated on an Alfisol in south-western Nigeria ten years after land clearing. Long-term soil physical degradation was greates after mechanized land clearing or tillage systems. The erosion resulting from soil compaction with mechanized land management systems resulted in exposure of subsoil. Cropping system had no significant effect on soil physical properties. Alley cropping decreased exchangeable calcium and pH, and increased total acidity mainlythrough the greater demand for calcium by the hedgerow species. Grazedpasture depleted exchangeable potassium because it was taken up by thegrass and exported from the site by the cattle following consumption of the grass. |
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Palavras-Chave: |
Clearing; Compactacao; Compaction; Cultivo; Degradacao do solo; erosion; propriedades do solo. |
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Thesagro: |
Desmatamento; Erosão. |
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Thesaurus Nal: |
soil degradation; soil properties; tillage. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01752naa a2200265 a 4500
001 1458704
005 1995-02-01
008 1994 bl --- 0-- u #d
100 1 $aHULUGALLE, N. R.
245 $aLong-term effects of land clearing methods, tillage systems and cropping systems on surface soil properties of a tropical Alfisol in S.W. Nigeria.
260 $c1994
520 $aThe long-term effects of land clearing methods (manual, shear blade, tree-pusher/root-rake combination, traditional), tillage systems (disc ploughing, mechanized no-tillage, traditional) and cropping systems(annual cropping, alley cropping, grazed pasture) on surface soil physical and chemical properties were evaluated on an Alfisol in south-western Nigeria ten years after land clearing. Long-term soil physical degradation was greates after mechanized land clearing or tillage systems. The erosion resulting from soil compaction with mechanized land management systems resulted in exposure of subsoil. Cropping system had no significant effect on soil physical properties. Alley cropping decreased exchangeable calcium and pH, and increased total acidity mainlythrough the greater demand for calcium by the hedgerow species. Grazedpasture depleted exchangeable potassium because it was taken up by thegrass and exported from the site by the cattle following consumption of the grass.
650 $asoil degradation
650 $asoil properties
650 $atillage
650 $aDesmatamento
650 $aErosão
653 $aClearing
653 $aCompactacao
653 $aCompaction
653 $aCultivo
653 $aDegradacao do solo
653 $aerosion
653 $apropriedades do solo
773 $tSoil Use and Management$gv.10, n.1, p.25-30, 1994.
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Registro original: |
Embrapa Soja (CNPSO) |
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