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Memorias de investigación
Communications at congresses:
Effects of different soil management practices on soil mechanic resistance and seed depth placement in a maize crop in Alentejo, Portugal Mediterranean region
Year:2012
Research Areas
  • Automatic
Information
Abstract
No tillage, minimum tillage and conventional tillage practices are commonly used in maize crops in Alentejo, affecting soil physic conditions and determining seeders performance. Seeders distribution can be evaluated in the longitudinal and vertical planes. Vertical plane is specified by seeding depth (Karayel et al., 2008). If, in one hand seeding depth uniformity is a goal for all crop establishment , in the other hand, seeders furrow openers depth control is never constant depending on soil conditions. Seed depth uniformity affects crop emergence, Liu et al. (2004) showed an higher correlation between crop productivity and emergence uniformity than with longitudinal plants distribution. Neto et al. (2007) evaluating seed depth placement by measuring maize mesocotyl length under no tillage conditions in 38 farms concluded that 20% of coefficient of variation suggests the need of improvement seeders depth control mechanisms. The objective of this study was to evaluate casual relationships and create spatial variability maps between soil mechanic resistance and vertical distribution under three different soil practices to improve seed depth uniformity.
International
Si
Congress
International Conference of Agricultural Engineering. CIGR-Ageng2012
960
Place
Valencia
Reviewers
Si
ISBN/ISSN
84-615-9928-4
Start Date
08/07/2012
End Date
12/07/2012
From page
1
To page
1
International Conference of Agricultural Engineering. CIGR-Ageng2012
Participants
  • Autor: Luis Alcino Conceiçao (UPM)
  • Autor: Miguel Garrido Izard (UPM)
  • Autor: Constantino Valero Ubierna (UPM)
  • Autor: Susana Dias (Escola Superior Agrária de Elvas - Instituto Politécnico de Portalegre)
  • Autor: Pilar Barreiro Elorza (UPM)
  • Autor: Ricardo Freixial (Escola Superior Agrária de Elvas - Instituto Politécnico de Portalegre)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: LPF-TAGRALIA: Técnicas Avanzadas en Agroalimentación
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