A Methodology for Precision Nitrogen Fertilization in High-Input Farming Systems

A Methodology for Precision Nitrogen Fertilization in High-Input Farming Systems Nitrogen (N) emissions to ground and surface waters have become a major concern in many regions. In reaction, policy makers are tightening environmental constraints on agriculture, resulting in a call for more efficient management systems. This study presents a methodology for precision N fertilization in high-input farming systems applying split fertilizer strategies. Essentially, the method uses a mechanistic simulation model to quantify (i) soil mineral-N levels and (ii) N uptake rates on a real-time basis. Early warning signals are generated once N concentrations drop below a critical threshold level, indicating that additional fertilizer should be applied. Thresholds are not static, but defined in relation to actual uptake rates. Spatial variation is incorporated through the concept of management units: i.e., stable units with relatively homogeneous characteristics in terms of water regimes and nutrient dynamics. Separate simulations are conducted for each management unit, based on selected representative soil profiles. The proposed methodology was tested in a winter wheat (Triticum aestivum L.) field during the 1998 growing season. Six experimental strips were delineated receiving either ‘precise’ or traditional fertilization. Precision fertilization proved efficient in reducing fertilizer inputs (−23%), while slightly improving grain yields (+3%) and hectoliter weights (+4%). Results clearly illustrate the significance of precision management in the process of increasing fertilizer use efficiency. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Precision Agriculture Springer Journals

A Methodology for Precision Nitrogen Fertilization in High-Input Farming Systems

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Publisher
Springer Journals
Copyright
Copyright © 2000 by Kluwer Academic Publishers
Subject
Life Sciences; Agriculture; Soil Science & Conservation; Remote Sensing/Photogrammetry; Statistics for Engineering, Physics, Computer Science, Chemistry and Earth Sciences; Atmospheric Sciences
ISSN
1385-2256
eISSN
1573-1618
D.O.I.
10.1023/A:1012338414284
Publisher site
See Article on Publisher Site

Abstract

Nitrogen (N) emissions to ground and surface waters have become a major concern in many regions. In reaction, policy makers are tightening environmental constraints on agriculture, resulting in a call for more efficient management systems. This study presents a methodology for precision N fertilization in high-input farming systems applying split fertilizer strategies. Essentially, the method uses a mechanistic simulation model to quantify (i) soil mineral-N levels and (ii) N uptake rates on a real-time basis. Early warning signals are generated once N concentrations drop below a critical threshold level, indicating that additional fertilizer should be applied. Thresholds are not static, but defined in relation to actual uptake rates. Spatial variation is incorporated through the concept of management units: i.e., stable units with relatively homogeneous characteristics in terms of water regimes and nutrient dynamics. Separate simulations are conducted for each management unit, based on selected representative soil profiles. The proposed methodology was tested in a winter wheat (Triticum aestivum L.) field during the 1998 growing season. Six experimental strips were delineated receiving either ‘precise’ or traditional fertilization. Precision fertilization proved efficient in reducing fertilizer inputs (−23%), while slightly improving grain yields (+3%) and hectoliter weights (+4%). Results clearly illustrate the significance of precision management in the process of increasing fertilizer use efficiency.

Journal

Precision Agriculture – Springer Journals

Published: Oct 19, 2004

References

  • Crop specific parameters for yield forecasting across the European Community
    Boon-Prins, E. R.; de Koning, G. H. J.; van Diepen, C. A.; Penning de Vries, F. W. T.
  • SWATRER: a Computer Package for Modeling the Field Water Balance
    Dierckx, J.; Belmans, C.; Pauwels, P.
  • Proceedings of the 1st European Conference on Precision Agriculture
    Ferguson, R. B.; Hergert, G. W.; Schepers, J. S.
  • LEACHN: a Process Based Model for Water and Solute Movement, Transformations, Plant Uptake and Chemical Reactions in the Unsaturated Zone
    Hutson, J.; agenet, R. J. W.
  • Mining geostatistics
    Journel, A. G.; Huybregts, C. J.
  • The Nitrate Problem and Nitrate Policy in the Netherlands
    Oenema, O.; Boers, P. C. M.; van Eerdt, M. M.; Fraters, B.; van der Meer, H. G.; Roets, C. W. J.; Schroder, J. J.; Willems, W. J.
  • Simulation and Systems Management in Crop Protection
    Spitters, C. J. T.; van Keulen, H.; van Kraalingen, D. W. G.
  • Keys to Soil Taxonomy
    Survey Staff, S.
  • WAVE: a Mathematical Model for Simulating Water and Agrochemicals in the Soil and Vadose Environment
    Vanclooster, M.; Viane, P.; Diels, J.; Christiaens, K.
  • Spatial soil variability as a guiding principle in nitrogen management
    Verhagen, J.
  • Bodemkaart van Nederland: Toelichting bij Kaartblad 37-West Rotterdam
    Vos, G. A.
  • Waterretentie-en Doorlatendheidskarakteristieken van Boven-en Ondergronden in Nederland: de Staringreeks
    Wösten, J. H. M.; Veerman, G. J.; Stolte, J.
  • Using Existing Soil Data to Derive Hydraulic Parameters for Simulation Models in Environmental Studies in Land Use Planning
    Wösten, J. H. M.; Lilly, A.; Nemes, A.; Le Bas, C.

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