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 and Barreiro Elorza, Pilar and Freixial, Ricardo and Dias, S. and Garrido Izard, Miguel and 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.. In: "International Conference of Agricultural Engineering. CIGR-Ageng2012", 08/07/2012 - 12/07/2012, Valencia, España. p. 1.

Description

Title: Effects of different soil management practices on soil mechanic resistance and seed depth placement in a maize crop in Alentejo, Portugal Mediterranean region.
Author/s:
  • Conceiçao, Luis Alcino
  • Barreiro Elorza, Pilar
  • Freixial, Ricardo
  • Dias, S.
  • Garrido Izard, Miguel
  • Valero Ubierna, Constantino
Item Type: Presentation at Congress or Conference (Article)
Event Title: International Conference of Agricultural Engineering. CIGR-Ageng2012
Event Dates: 08/07/2012 - 12/07/2012
Event Location: Valencia, España
Title of Book: Proceedings of International Conference of Agricultural Engineering. CIGR-Ageng2012
Date: 2012
Subjects:
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Ingeniería Rural [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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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.

More information

Item ID: 19805
DC Identifier: http://oa.upm.es/19805/
OAI Identifier: oai:oa.upm.es:19805
Deposited by: Memoria Investigacion
Deposited on: 09 Dec 2013 16:12
Last Modified: 21 Apr 2016 21:20
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