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Table 3 Selected SVIs, their respective equations, the aimed detection trait and references

From: Comparison of visible imaging, thermography and spectrometry methods to evaluate the effect of Heterodera schachtii inoculation on sugar beets

SVIs

Equation

Traits

References

NDVI

(R800 − R680)/(R800 + R680)

Biomass, coverage

[29]

MCARI2

(1.5[2.5 (R800 − R670) − 1.3 (R800 + R550)])/sqrt((2*R800 + 1)^2 − (6*R800 − 5*sqrtR670) − 0.5))

LAI, coverage

[30]

780/700

R780/R700

Nitrogen content

[31]

TGI

−0.5[(W670 − W480)(R670 − R550) − (W670 − W550)(R670 − R480)]

Chlorophyll content

[32]

CHLG

(R760 − R800)/(R540 − R560)

Chlorophyll content

[33]

PRI

(R531 − R570)/(R531 + R570)

Stress

[34]

NDWI1650

(R840 − R1650)/(R840 + R1650)

Plant water status

[35]

HI

(R534 − R698)/(R534 + R698) − R704/2

Plant health

[1]