Use of a Digital Camera to Monitor the Growth and Nitrogen Status of Cotton
Figure 5
Calibration models describing the relationship between canopy cover and aboveground total N content, LAI, or aboveground biomass in experiment 1. The curves in (a), (c), and (e) were fitted by cotton cultivar: “XLZ 43” or “XLZ 48.” The curves in (b), (d), and (f) were fitted by N rates: 0 kg hm−2 (N0), 120 kg hm−2 (N1), 240 kg hm−2 (N2), 360 kg hm−2 (N3), and 480 kg hm−2 (N4).
