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Registro Completo |
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Biblioteca(s): |
Embrapa Agropecuária Oeste; Embrapa Arroz e Feijão; Embrapa Cerrados; Embrapa Soja; Embrapa Unidades Centrais. |
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Data corrente: |
01/12/2006 |
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Data da última atualização: |
01/10/2018 |
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Tipo da produção científica: |
Documentos |
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Autoria: |
SA, M. A. C. de; SANTOS JUNIOR, J. de D. G. dos. |
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Afiliação: |
MARCOS AURELIO CAROLINO DE SA, CPAC; JOAO DE DEUS GOMES DOS SANTOS JR, CPAC. |
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Título: |
Compactação do solo: consequências para o crescimento vegetal. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Planaltina, DF: Embrapa Cerrados, 2005. |
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Páginas: |
25 p. |
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Série: |
(Embrapa Cerrados. Documentos, 136). |
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Idioma: |
Português |
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Conteúdo: |
ABSTRACT: Soil compactation is problem in modern agriculture. Over cultivation, intensive cropping and inappropriate soil management leads to soil compactation. There are important factors which directly affect plant growth, such as water, oxygen, temperature and mechanical resistance to seedling emergence or root growth. By the way, factors indirectly affecting plant growth are soil physical attributes, such as bulk density, texture, aggregation, aggregate stability and pore size distribution. To identify compact layers in soil, trench assessment, bulk density, relative bulk density or compactness degree and penetrometer evaluations can be used. But, these methods request knowledge about other soil attributes for a correct interpretation of analytical results. Recently, soil compactation has been interpreted by the least limiting water range (LLWR), defined as the range in soil water content within which limitations to plant growth associated with water potential, aeration and mechanical resistence to root penetration are small. However, further research is necessary to evaluate and validade LLWR in Cerrado soils. |
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Palavras-Chave: |
Densidade; Growth; Plant; Soil compactation. |
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Thesagro: |
Compactação do Solo; Crescimento; Densidade de Plantio; Manejo do Solo; Planta. |
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Thesaurus Nal: |
density; soil management. |
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Categoria do assunto: |
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P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPAC-2009/27465/1/doc_136.pdf
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Marc: |
LEADER 01880nam a2200277 a 4500
001 1569996
005 2018-10-01
008 2005 bl uuuu u0uu1 u #d
100 1 $aSA, M. A. C. de
245 $aCompactação do solo$bconsequências para o crescimento vegetal.
260 $aPlanaltina, DF: Embrapa Cerrados$c2005
300 $a25 p.
490 $a(Embrapa Cerrados. Documentos, 136).
520 $aABSTRACT: Soil compactation is problem in modern agriculture. Over cultivation, intensive cropping and inappropriate soil management leads to soil compactation. There are important factors which directly affect plant growth, such as water, oxygen, temperature and mechanical resistance to seedling emergence or root growth. By the way, factors indirectly affecting plant growth are soil physical attributes, such as bulk density, texture, aggregation, aggregate stability and pore size distribution. To identify compact layers in soil, trench assessment, bulk density, relative bulk density or compactness degree and penetrometer evaluations can be used. But, these methods request knowledge about other soil attributes for a correct interpretation of analytical results. Recently, soil compactation has been interpreted by the least limiting water range (LLWR), defined as the range in soil water content within which limitations to plant growth associated with water potential, aeration and mechanical resistence to root penetration are small. However, further research is necessary to evaluate and validade LLWR in Cerrado soils.
650 $adensity
650 $asoil management
650 $aCompactação do Solo
650 $aCrescimento
650 $aDensidade de Plantio
650 $aManejo do Solo
650 $aPlanta
653 $aDensidade
653 $aGrowth
653 $aPlant
653 $aSoil compactation
700 1 $aSANTOS JUNIOR, J. de D. G. dos
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Registro original: |
Embrapa Cerrados (CPAC) |
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