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Table 1 Vegetation indices used in this study

From: Nondestructive estimation of potato yield using relative variables derived from multi-period LAI and hyperspectral data based on weighted growth stage

Vegetation indices

Formula

References

Normalized Difference Vegetation Index (NDVI)

(R800 − R670)/(R800 + R670)

Rouse et al. [45]

Red edge Chlorophyll Index (CIred edge)

R800/R720 − 1

Gitelson et al. [46]

Green edge Chlorophyll Index (CIgreen)

R800/R550 − 1

Gitelson et al. [46]

Two-band Enhanced Vegetation Index (EVI2)

2.5(R800 − R670)/(1 + R800 + 2.4R670)

Jiang et al. [47]

Normalized Difference Red edge (NDRE)

(R800 − R720)/(R800 + R720)

Gitelson et al. [48]

MERIS Terrestrial Chlorophyll Index (MTCI)

(R800 − R720)/(R720 − R670)

Dash et al. [49]