Table 2.

Correlation analysis of beneficial mineral elements

	Ca	Mn	Fe	Cu	Zn	Se
Ca	1
Mn	0.344**	1
Fe	0.237**	0.277**	1
Cu	0.359**	0.575**	0.436**	1
Zn	0.484**	0.485**	0.202**	0.537**	1
Se	-0.085	-0.020	-0.024	0.022	-0.099	1

^** The correlation coefficient was very significant at P < 0.01 level

^** Correlation is significant at P < 0.01