TABLE 4.

Pearson’s correlation coefficients for the correlation analysis between Nitrogen content measured by EQA (N%_EQA) and Soil Plant Analysis Development (SPAD), and between N%_EQA and N-pen meter (N%_N–Pen).

	JS	PIS	BS	FHS	MRS
SPAD	0.89**	0.81**	0.90**	0.87**	0.87**
N%N–Pen	0.91**	0.86**	0.93**	0.90**	0.81**

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