Canopy vegetative index (VI) sensors are precision agriculture tools that have shown potential to predict biomass production and aid in crop management. Few studies have been published on the use of VI sensors to estimate biofuel crops biomass.  In 2010, a biofuel crop Miscanthus sinensis completely randomized experiment with five residual fertility levels was established. Each level produced soil limitations that result in different levels of biomass production. NDVI sensors where used to sense the crop during the summer biomass accumulation. There was a relation between NDVI readings and biomass production, but not with plant composition.