Data/hora: 21/06/2024 06:30:00

Biblioteca(s): | Embrapa Agropecuária Oeste; Embrapa Arroz e Feijão; Embrapa Cerrados; Embrapa Soja; Embrapa Unidades Centrais.
Data corrente: | 01/12/2006
Data da última atualização: | 01/10/2018
Autoria: | SA, M. A. C. de; SANTOS JUNIOR, J. de D. G. dos.
Afiliação: | MARCOS AURELIO CAROLINO DE SA, CPAC; JOAO DE DEUS GOMES DOS SANTOS JR, CPAC.
Título: | Compactação do solo: consequências para o crescimento vegetal.
Ano de publicação: | 2005
Fonte/Imprenta: | Planaltina, DF: Embrapa Cerrados, 2005.
Páginas: | 25 p.
Série: | (Embrapa Cerrados. Documentos, 136).
Idioma: | Português
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.
Palavras-Chave: | Densidade; Growth; Plant; Soil compactation.
Thesagro: | Compactação do Solo; Crescimento; Densidade de Plantio; Manejo do Solo; Planta.
Thesaurus Nal: | density; soil management.

Categoria do assunto:

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P Recursos Naturais, Ciências Ambientais e da Terra

URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/CPAC-2009/27465/1/doc_136.pdf
Registro original: | Embrapa Cerrados (CPAC)

Exemplares:

AI-SEDE - (37651-1) - EMB - FL - -- - 10147 - CPAC - 10147 - DIS
AI-SEDE - (37651-2) - EMB - FL - -- - 10147 - CPAC - 10147a - DIS
CNPAF - (24819-1) - EMB - FL - -- - FOL 4617 -  - 2005.04617 - DIS
CPAO - (28393-1) - EMB - FL - -- - FOL 15125 -  - FOL 15125 - DIS
CNPSO - (27419-1) - EMB - FL - -- - 6464 -  - 6464 - DIS
CPAC - (27465-1) - UMT - FL - PP - FOL7688 -  - CRI6959 - DIS
CPAC - (27465-2) - UMT - FL - PP - FOL7688 -  - DOC193 - DIS
CPAC - (27465-3) - UMT - FL - PP - FOL7688 -  - FOL7688 - DIS