Different Methods for Plant Chlorophyll Estimation

Increasing role for plant phytodiagnostics becomes to play different spectrometric techniques used as a part of remote sensing applications. The radiation behavior of land covers and the spectral response to changing conditions lies at the root of these studies. The visible and near infrared (0.4 - 0.9 mu m) measurements have proved abilities in vegetation monitoring. The reason is that this wavelength range reveals significant sensitivity to plant biophysical properties. The information is carried by the specific vegetation spectral characteristics which depend on such plant parameters as chlorophyll content, biomass amount, leaf area, etc. These parameters are associated with plant development and stress factors being closely related to vegetation physiological state. In our study, multispectral data of reflected, transmitted and emitted by plant leaves irradiance have been used to show the possibility for plant chlorophyll estimation. Different methods such as vegetation indices, red edge analysis and fluorescence emission have been applied and compared.