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Developments in proximal crop sensing for precision agriculture

Code: 9781835451939
Mats Söderström, Bruno Morandin Figueiredo, Lena Engström, Omran Alshihabi, Kristin Persson, Swedish University of Agricultural Sciences (SLU), Sweden

Chapter synopsis:

This chapter presents an overview of proximal sensing techniques used in practical precision agriculture, with the overall aim of contributing to more sustainable crop production. To provide perspective on the usefulness of crop sensors, the chapter starts with an example of why site-specific crop management is important and how it relates to sustainable production. The basics of crop canopy reflectance are then presented, followed by an introduction to two practical precision agriculture techniques, site-specific weed management and real-time crop sensing, mainly focusing on within-field nitrogen application. Two case studies in which different types of proximal sensors are used, individually or in combination with other techniques (UAVs and satellites), are described. Finally, potential future developments are briefly discussed.



DOI: 10.19103/AS.2025.0152.02

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Table of contents
  • 1 Introduction
  • 2 Precision agriculture for sustainable crop production
  • 3 The electromagnetic spectrum reflectioncharacteristics of light from a crop
  • 4 Site-specific weed management and variable-rateapplication of nitrogen with proximal sensors
  • 5 Examples of handheld sensors and sensors in contactwith plants
  • 6 Case Study 1: Comparison of sensors for predictionof N uptake in oats
  • 7 Case Study 2: Evaluation and upscaling of portabletools for crude protein determination and fieldmapping in conjunction with Sentinel-2 satelliteimagery
  • 8 Outlook and Conclusion
  • 9 Where to look for further information
  • 10 References

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