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Provedor de dados:  PAB
País:  Brazil
Título:  Soil compaction by machine traffic and least limiting water range related to soybean yield
Autores:  Beutler,Amauri Nelson
Centurion,José Frederico
Silva,Alvaro Pires da
Centurion,Maria Aparecida Pessôa da Cruz
Leonel,Cristian Luarte
Freddi,Onã da Silva
Data:  2008-11-01
Ano:  2008
Palavras-chave:  Glicine max
Soil management
Soil physical quality
Resumo:  The research aimed to evaluate machine traffic effect on soil compaction and the least limiting water range related to soybean cultivar yields, during two years, in a Haplustox soil. The six treatments were related to tractor (11 Mg weight) passes by the same place: T0, no compaction; and T1*, 1; T1, 1; T2, 2; T4, 4 and T6, 6. In the treatment T1*, the compaction occurred when soil was dried, in 2003/2004, and with a 4 Mg tractor in 2004/2005. Soybean yield was evaluated in relation to soil compaction during two agricultural years in completely randomized design (compaction levels); however, in the second year, there was a factorial scheme (compaction levels, with and without irrigation), with four replicates represented by 9 m² plots. In the first year, soybean [Glycine max (L.) Merr.] cultivar IAC Foscarim 31 was cultivated without irrigation; and in the second year, IAC Foscarim 31 and MG/BR 46 (Conquista) cultivars were cultivated with and without irrigation. Machine traffic causes compaction and reduces soybean yield for soil penetration resistance between 1.64 to 2.35 MPa, and bulk density between 1.50 to 1.53 Mg m-3. Soil bulk density from which soybean cultivar yields decrease is lower than the critical one reached at least limiting water range (LLWR =/ 0).
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira
Relação:  10.1590/S0100-204X2008001100019
Formato:  text/html
Fonte:  Pesquisa Agropecuária Brasileira v.43 n.11 2008
Direitos:  info:eu-repo/semantics/openAccess

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