Correction: Research on the classification model of rubber leaf powdery mildew disease severity based on hyperspectral multi-dimensional feature fusion

Correction: Plant Methods (2025) 21:154 10.1186/s13007-025-01470-w

In Table 2 of this article [1], the data in the computing formula extended towards references. The correct table 2 is given below.

Incorrect Table 2:

Correct Table 2:

Table 2.

Vegetation indices calculation formula

	Computing formula	References
Anthocyanin reflectance index (ARI)	1/R550 − 1/R700	[22]
Anthocyanin (Ant)	(1/R550 − 1/R700) × R780	[22]
Red-edge chlorophyll index (CIred-edge)	(R750 − R705) / R705	[23]
Transformed chlorophyll absorption and reflectance index (TCARI)	3 [(R700 − R670) − 0.2 (R700 − R550) (R700 / R670)]	[24]
Modified chlorophyll absorption ratio index (MCARI)	[(R700 − R670) − 0.2 (R700 − R550)] (R700 / R670)	[24]
Pigments specific simple ratio (PSSR)	R800 / R635	[25]
Photochemical/physiological reflectance index (PRI)	(R531 – R570) / (R531 + R570)	[26]
Plant senescence reflectance index (PSRI)	(R680 – R500) / R750	[27]
Ratio analysis of reflectance spectra (RARS)	R675 / (R700 × R650)	[28]
Green chlorophyll index (CIgreen)	R790 / R550 – 1	[21]
Red-edge normalized difference vegetation index (ReNDVI)	(R750 – R705) / (R750 + R705)	[29]
Simple ratio (SR)	R900 / R680	[30]
Red-edge vegetation stress index (RVSI)	[(R714 + R752) / 2] – R733	[27]
Fluorescence ratio index (FRI)	R740 / R800	[31]
Modified red-edge simple ratio index (MRESR)	(R750 – R445) / (R705 – R445)	[32]
Water stress and canopy temperature (WSCT)	(R970 – R850) / (R970 + R850)	[33]

In this article [1] Fig. 3 appeared incorrectly and have now been corrected in the original publication. For completeness and transparency, the correct and incorrect versions are displayed below.

Incorrect Fig. 3.

Fig. 3.

Original spectral reflectance and MT spectral features of rubber tree leaves across powdery mildew severity. (a) R, (b) R’, (c) R’’, (d) 1/R, (e) (1/R)’, (f) (1/R)’’, (g) logR, (h) (logR)’, (h) (logR)’’

Correct Fig. 3.

Fig. 3.

Original spectral reflectance and MT spectral features of rubber tree leaves across powdery mildew severity. a R is the primitive spectral reflectance, b R’ is the first derivative of the spectral reflectance, c R’’ is the second derivative of the spectral reflectance, d 1/R is the reciprocal of the spectral reflectance, e (1/R)’ is the first derivative of the reciprocal of the spectral reflectance, f (1/R)’’ is the second derivative of the reciprocal of the spectral reflectance, g logR is the logarithm of the spectral reflectance, h (logR)’ is the first derivative of the logarithm of the spectral reflectance, i (logR)’’ is the second derivative of the logarithm of the spectral reflectance

The original article has been corrected.