TABLE 5.

Pearson’s correlation coefficients for the correlation of Normalized Difference Red Edge (NDRE) index (based on ASD) with SPAD and N%_N–Pen at different growth stages.

	TS	JS	PIS	BS	FHS	MRS
SPAD	0.40	0.68**	0.52**	0.28	0.81**	0.68**
N%N–Pen	0.25	0.17	0.46	0.01	0.70**	0.61**

**Correlation is significant at the 0.01 level (two-tailed).