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Fig. 7 | Plant Methods

Fig. 7

From: Estimation of area- and mass-based leaf nitrogen contents of wheat and rice crops from water-removed spectra using continuous wavelet analysis

Fig. 7

Coefficients of determination (R2) for the relationships of Nmass with a MR spectra and b WR spectra derived wavelet features and c MR spectra and d WR spectra derived ND indices. Regions highlighted in red on the scalograms represent the top 1% R2 for wavelet features or ND indices. The downward arrows on the top of the figure indicate the wavelength locations of absorption features with both 2060 nm and 2180 nm for protein and nitrogen and 2130 nm for protein

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Plant Methods

ISSN: 1746-4811