"Consistent with other studies, green-band indices were more strongly correlated with maize chlorophyll content and yield than conventional red-band indices, and multivariable models often outperformed single variable models."—Peter et al. 2020
Peter, B. G., Messina, J. P., Carroll, J. W., Zhi, J., Chimonyo, V., Lin, S., and Snapp, S. S. Multi-spatial resolution satellite and sUAS imagery for precision agriculture on smallholder farms in Malawi. Photogrammetric Engineering & Remote Sensing (PE&RS).