Monitoring canopy leaf pigment density in wheat with hyperspectral remote sensing Turf Color Evaluation by Hyperspectral Vegetation Indices Nitrogen rate and timing considerations on yield and physiological parameters of corn canopy Monitoring grain starch accumulation in winter wheat via spectral remote sensing Monitoring Canopy Chlorophyll Density in Seedlings of Winter Wheat Using Imaging Spectrometer Monitoring of Cotton Canopy Chlorophyll Density and Leaf Nitrogen Accumulation Status by Using Hyperspectral Data