[Using hyperspectral derivative index to monitor winter wheat disease].

  title={[Using hyperspectral derivative index to monitor winter wheat disease].},
  author={Jin-bao Jiang and Yunhao Chen and Wen-jiang Huang},
  journal={Guang pu xue yu guang pu fen xi = Guang pu},
  volume={27 12},
The canopy reflectance of winter wheat that infected different severity stripe rust was measured through artificial inoculation, the disease index (DI) of the wheat corresponding to the spectra was acquired in the field, and the parameters of biochemistry and biophysics were measured indoors. The 1st derivatives were analyzed. The results show that the 1st derivative values increase at the green edge (500-560 nm), while decrease at the red edge (680-760 nm) with DI increasing. The ratio of the… CONTINUE READING

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