TABLE 3.

Model statistics and significance levels for the comparison of PC axes values for the groupings harvested material (DAS 72 and 101) and water status of the cores in contrast to the other grouping.

PC axis	Water status		Harvest		Model statistics
	Comparison		Comparison		Kendall’s tau Rank Correlation				Wilcoxon Signed-Rank Test
					z	tau (τ)	P-value	Significance	V	P-value	Significance
PC1	Logged		DAS 72	DAS 101	9.979	0.532	<1 × 10–10	***	1,967	<1 × 10–10	***
	Normal		DAS 72	DAS 101	2.449	0.131	0.014	*	36	<1 × 10–10	***
PC2	Logged		DAS 72	DAS 101	1.757	0.094	0.079	NS	12,695	<1 × 10–10	***
	Normal		DAS 72	DAS 101	1.732	0.092	0.083	NS	445	<1 × 10–10	***
PC3	Logged		DAS 72	DAS 101	6.007	0.320	1.893 × 10–9	***	4,232	1.694 × 10–4	***
	Normal		DAS 72	DAS 101	5.495	0.293	3.907 × 10–8	***	12,875	<1 × 10–10	***
PC1	Logged	Normal	DAS 72		0.282	0.015	0.778	NS	0	<1 × 10–10	***
	Logged	Normal	DAS 101		3.332	0.178	8.629 × 10–4	***	2	<1 × 10–10	***
PC2	Logged	Normal	DAS 72		0.285	0.015	0.776	NS	12,053	<1 × 10–10	***
	Logged	Normal	DAS 101		−0.558	−0.030	0.577	NS	323	<1 × 10–10	***
PC3	Logged	Normal	DAS 72		1.374	0.073	0.170	NS	820	<1 × 10–10	***
	Logged	Normal	DAS 101		0.815	0.043	0.415	NS	9,506	1.765 × 10–7	***

The upper part of the table compares cores within the same water status between harvests. The lower part of the table compares between water status for the same harvest. DAS, days after sowing.

***p < 0.001.

**p < 0.01.

*p < 0.05.

^NSp > 0.05.