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Monitoring Crop Growth Status Based on Optical Sensor

  • Di Cui
  • Minzan Li
  • Yan Zhu
  • Weixing Cao
  • Xijie Zhang
Part of the The International Federation for Information Processing book series (IFIPAICT, volume 259)

In order to detect the growth status and predict the yield of the crop, crop growth monitor measuring nitrogen content in the plant is developed based on optical principle. The monitor measures the spectral reflectance of the plant canopy at the 610 nm and 1220 nm wavebands, and then calculates the nitrogen content in the plant with the measured data. The field test was carried out to evaluate performance of the monitor. A portable multi-spectral radiometer named Crop Scan was used to measure the reflectance as a reference instrument. The result shows that the leaf reflectance measured by the monitor has a close linear correlation with that measured by Crop Scan at the 610 nm waveband (R2 = 0.7604), but the correlation between them is needed to be improved at the 1220 nm waveband. The hardware and the software of the monitor are also explained in detail. It is still need to be improved to satisfy the demand of ground-based remote sensing in precision farming.

Keywords

nitrogen content crop growth ground-based remote sensing precision agriculture 

References

  1. Stone, M. L., J. B. Solie, W. R. Raun, R. W. Whitney, S. L. Taylor, and J. D. Ringer. Use of spectral radiance for correcting in−season fertilizer nitrogen deficiencies in winter wheat. Transactions of the ASAE, 1996, 39(5): 1623-1631CrossRefGoogle Scholar
  2. Xue Lihong, Cao Weixing, Luo Weihong, Zhang Xian. Correlation between leaf nitrogen status and canopy spectral characteristics in wheat. Acta Phytoecologica Sinica., 2004, 28 (2): 172-177Google Scholar

Copyright information

© IFIP International Federation for Information Processing 2008

Authors and Affiliations

  • Di Cui
    • 1
  • Minzan Li
    • 1
  • Yan Zhu
    • 2
  • Weixing Cao
    • 2
  • Xijie Zhang
    • 1
  1. 1.Key Laboratory of Information Agriculture of Jiangsu ProvinceNanjing Agricultural UniversityChina
  2. 2.Key Laboratory of Crop Growth Regulation; Ministry of AgricultureNanjing Agricultural UniversityChina

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