Table 5.

Pearson's correlation coefficient and the corresponding statistical significance of total N accumulated in pea plants (Na-t), nitrogen utilization efficiency (NutE), and nitrogen harvest index (NHI) relative to rate of transferred N (NTR), contribution of nitrogen in vegetative organ transferred to grain (NTC), and amount of nitrogen derived from atmosphere (Ndfa) across 2012–2014.

Variable	Na-t	NutE	NHI
NTR-leaf	0.100a	0.522**	0.474*
NTR-stem	0.450*	0.517**	0.626**
NTC-leaf	0.734**	0.440*	0.848**
NTC-stem	0.702**	0.830**	0.725**
Ndfa	0.284	0.579**	0.496*
NutE	−	−	0.953**

^aCorrelation coefficients followed by ^* and ^** are significant at P ≤ 0.05 and P ≤ 0.01, respectively.