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Spatial variability of seed depth placement of maize under no tillage in Alentejo, Portugal

Conference paper
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Abstract

Among the various factors that contribute towards producing a successful maize crop, seed depth placement is a key determinant, especially in a no-tillage system. The main objective of this work was to evaluate the spatial variability of seed depth placement and crop establishment in a maize crop under no-tillage conditions, using precision farming technologies. The obtained results indicate that seed depth placement was significantly affected by soil moisture content, while a very high coefficient of variation of 39% was found for seed depth. Seeding depth had a significant impact on mean emergence time and percentage of emerged plants. Shallow average depth values and the high coefficient of variation suggest a need for improvement in controlling the seeder sowing depth.

Keywords

maps maize no-tillage seeding depth sensing 

Notes

Acknowledgments

The authors acknowledge the permission given by Pedro Vacas de Carvalho, owner of the farm where the trial was carried out and Area400 (http://area400.com/) for remote sensing services.

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Copyright information

© Wageningen Academic Publishers The Netherlands 2013

Authors and Affiliations

  1. 1.Instituto Politécnico de Portalegre, ESAEElvasPortugal
  2. 2.Physical Properties Laboratory (LPF-Tagralia)Universidad Politécnica de MadridMadridSpain

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