Fig. 5. The normalized difference vegetation index (NDVI) sufficiency index vs. growth stage (GS)-30 whole-plant N concentration for four site–years with high (>1000 kg ha-1) GS-30 mean biomass.
Fig. 5. The normalized difference vegetation index (NDVI) sufficiency index vs. growth stage (GS)-30 whole-plant N concentration for four site–years with high (>1000 kg ha-1) GS-30 mean biomass.