TABLE 3.

Pearson correlation coefficient among parameters of symbiotic performance of cowpea inoculated with 12 N₂O reducing Bradyrhizobium strains (Table 2).

	NN	NDW	SDW	SE (%)	SN (%)	Ndfa (%)
NN	1.00
NDW	0.381∗	1.00
SDW	0.510∗∗	0.648∗∗∗	1.00
SE (%)	0.510∗∗	0.648∗∗∗	1.00∗∗∗	1.00
SN (%)	0.305ns	0.147ns	0.736∗∗∗	0.548∗∗∗	1.00
Ndfa (%)	0.327ns	0.235ns	0.456∗∗	0.456∗∗	0.936∗∗∗	1.00

ns, non-significant; ^∗significant at 0.05; ^∗∗significant at 0.01; ^∗∗∗significant at 0.001.