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Development of a Nitrogen Application System for Nitrogen Deficiency in Corn

  • Noh, Hyun Kwon (Department of Biosystems Engineering, Chungbuk National University)
  • Received : 2017.05.19
  • Accepted : 2017.05.30
  • Published : 2017.06.01

Abstract

Purpose: Precision agriculture includes determining the right amount of nitrogen for a specific location in the field. This work focused on developing and validating a model using variable rate nitrogen application based on the estimated SPAD value from the ground-based image sensor. Methods: A variable rate N application based on the decision making system was performed using a sensor-based variable rate nitrogen application system. To validate the nitrogen application decision making system based on the SPAD values, the developed N recommendation was compared with another conventional N recommendation. Results: Sensor-based variable rate nitrogen application was performed. The nitrogen deficiency level was measured using the image sensor system. Then, a variable rate application was run using the decision model and real-ti me control. Conclusions: These results would be useful for nitrogen management of corn in the field. The developed nitrogen application decision making system worked well, when considering the SPAD value estimation.

Acknowledgement

Supported by : Chungbuk National University

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