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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
22/11/2002 |
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Data da última atualização: |
22/11/2002 |
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Autoria: |
LAL, R. |
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Título: |
Soil management systems and erosion control. |
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Ano de publicação: |
1977 |
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Fonte/Imprenta: |
In: GREENLAND, D.J.; LAL,R. Soil conservation and management in the humid tropics. Chichester: John Wiley & Sons, 1977. |
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Páginas: |
p. 93-97 |
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ISBN: |
0 471 994731 |
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Idioma: |
Inglês |
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Conteúdo: |
The importance of slope gradient (S) and crop management are discussed. The slope steepness factor can be considerably modified by the soil and crop management practices. The important factor is not which crop is to be grown, but the cultural practices adopted. Surface mulching decreases the water and soil loss to a minimum regardless of the slope within a slope steepness range of 1 to 15 per cent. A no-tillage system of soil management, with adequate crop residue on the soil surface, ensures soil and water conservation with negligible water runoff and virtually no soil loss. The infiltration rate under the no-tillage system is maintained and saturated hydraulic conductivity is high. In addition,the higher level of soil organic matter in the no-tillage systemimproves the water and nutrient-retention capacity of the surface soil. The no-tillage, mulch-farming tecniques have a tremendous potential for use in developing continuous arable production systems in the humid tropics. |
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Palavras-Chave: |
Controle; Tropico. |
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Thesagro: |
Agricultura; Conservação; Erosão; Manejo; Solo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01571naa a2200217 a 4500
001 1327590
005 2002-11-22
008 1977 bl uuuu u00u1 u #d
100 1 $aLAL, R.
245 $aSoil management systems and erosion control.
260 $c1977
300 $ap. 93-97
520 $aThe importance of slope gradient (S) and crop management are discussed. The slope steepness factor can be considerably modified by the soil and crop management practices. The important factor is not which crop is to be grown, but the cultural practices adopted. Surface mulching decreases the water and soil loss to a minimum regardless of the slope within a slope steepness range of 1 to 15 per cent. A no-tillage system of soil management, with adequate crop residue on the soil surface, ensures soil and water conservation with negligible water runoff and virtually no soil loss. The infiltration rate under the no-tillage system is maintained and saturated hydraulic conductivity is high. In addition,the higher level of soil organic matter in the no-tillage systemimproves the water and nutrient-retention capacity of the surface soil. The no-tillage, mulch-farming tecniques have a tremendous potential for use in developing continuous arable production systems in the humid tropics.
650 $aAgricultura
650 $aConservação
650 $aErosão
650 $aManejo
650 $aSolo
653 $aControle
653 $aTropico
773 $tIn: GREENLAND, D.J.; LAL,R. Soil conservation and management in the humid tropics. Chichester: John Wiley & Sons, 1977.
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Embrapa Solos (CNPS) |
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