Table 4 Canopy index values generated by the MECS-VINE sensor. Means (n = 6) are averaged over vigor levels and blocks. Measures were taken 1 Sept 2015. H: high; M: medium; L: low; VRA: variable rate application; SD: standard deviation; SE: standard error; ′: 0 kg N/ha; ″: 60 kg N/ha; and ‴: 120 kg N/ha. Coefficient of variation (CV) is calculated as SD/mean.