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Title: Nitrogen Uptake In Field Vegetable Production: Modeling Broadcast and Row Application
Authors: Vansteenkiste, Joachim ×
Van Loon, Jelle
Heuts, Reindert
Schrevens, Eddie
Diels, Jan #
Issue Date: Oct-2012
Publisher: International Society for Horticultural Science
Series Title: Acta Horticulturae vol:957 pages:115-122
Conference: Hortimodel location:Nanjing, China date:4-8 November 2012
Abstract: Field vegetable production is characterized by a high residual soil nitrate content, leading to high leaching losses. A better understanding of the nitrogen balance under common farming practices can contribute to a more sensible nitrogen management. Simulation models can help to achieve this goal. In this study, a novel approach is presented to model the nitrogen uptake under broadcast and row application of fertilizer via a quasi 2-D approach. In this approach a mechanistic 1-D soil model is supplemented with a generic crop module. Parallel simulations are performed for a rooted field fraction and a rootless field fraction and information between these simulations is exchanged and updated on a daily basis. Validation of
this approach was done in a field experiment with cauliflower. Via the quasi 2-D approach it was possible to simulate an increased nitrogen uptake with row application, although this was not represented in the measured data.
ISSN: 0567-7572
Publication status: published
KU Leuven publication type: IC
Appears in Collections:Division M3-BIORES: Measure, Model & Manage Bioresponses
Division Soil and Water Management
× corresponding author
# (joint) last author

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