Effects of different soil management practices on soil mechanic resistance and seed depth placement in a maize crop in Alentejo, Portugal Mediterranean region.

Conceiçao, Luis Alcino; Barreiro Elorza, Pilar; Freixial, Ricardo; Dias, S.; Garrido Izard, Miguel y Valero Ubierna, Constantino (2012). Effects of different soil management practices on soil mechanic resistance and seed depth placement in a maize crop in Alentejo, Portugal Mediterranean region.. En: "International Conference of Agricultural Engineering. CIGR-Ageng2012", 08/07/2012 - 12/07/2012, Valencia, España. p. 1.

Descripción

Título: Effects of different soil management practices on soil mechanic resistance and seed depth placement in a maize crop in Alentejo, Portugal Mediterranean region.
Autor/es:
  • Conceiçao, Luis Alcino
  • Barreiro Elorza, Pilar
  • Freixial, Ricardo
  • Dias, S.
  • Garrido Izard, Miguel
  • Valero Ubierna, Constantino
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: International Conference of Agricultural Engineering. CIGR-Ageng2012
Fechas del Evento: 08/07/2012 - 12/07/2012
Lugar del Evento: Valencia, España
Título del Libro: Proceedings of International Conference of Agricultural Engineering. CIGR-Ageng2012
Fecha: 2012
Materias:
Escuela: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Departamento: Ingeniería Rural [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 19805
Identificador DC: http://oa.upm.es/19805/
Identificador OAI: oai:oa.upm.es:19805
Depositado por: Memoria Investigacion
Depositado el: 09 Dic 2013 16:12
Ultima Modificación: 21 Abr 2016 21:20
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