Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/40919
Título: Spatial variability of soil physical attributes in integrated production systems in the Amazon region
Título(s) alternativo(s): Variabilidade espacial de atributos físicos do solo em sistemas integrados de produção na região amazônica
Palavras-chave: Eucalyptus
Urochloa brizantha
Agronomic efficiency
Precision agriculture
Soil compaction
Soil variability
Eucalipto
Eficiência agronômica
Agricultura de precisão
Compactação do solo
Variabilidade do solo
Data do documento: 2019
Editor: Empresa Brasileira de Pesquisa Agropecuária - EMBRAPA
Citação: FEITOSA, I. de L. et al. Spatial variability of soil physical attributes in integrated production systems in the Amazon region. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 54, 2019. Paginação irregular.
Resumo: The objective of this work was to analyze the spatial variability of soil physical attributes in integrated production systems and its relationship with the growth and yield of a corn (Zea mays) crop intercropped with palisade grass (Urochloa brizantha). The experiment was carried out in an integrated crop-livestock (ICL) system and in an integrated crop-livestock-forestry (ICLF) system, in a Plinthic Hapludox. The ICLF system was managed in alleys between eucalyptus (Eucalyptus spp.) rows, spaced at 18, 30, and 42 m. Corn grain and forage yields were positively correlated with soil clay and moisture contents, whereas grain yield was negatively correlated with soil penetration resistance. The lowest corn plant heights and grain yields were observed near eucalyptus rows. The average values for soil penetration resistance were below 2.0 MPa. Spatial variability was verified for: corn plant height, grain yield, and agronomic efficiency; forage intercropping; and soil moisture and silt contents, as well as penetration resistance. Greater grain and biomass yields were obtained at a 42-m distance between tree rows. The obtained results are indicative that corn traits and soil physical attributes were only slightly associated. The spatial distribution of the eucalyptus rows influences the agronomic efficiency of the intercrop and soil moisture contents.
URI: http://repositorio.ufla.br/jspui/handle/1/40919
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