Table 5.

Correlation between the percentage of AMF colonization, PSB population, and AMF spore density in soil and plant root growth (volume, surface area, length and diameter).

Variable	Root volume	Root surface area	Root length	Root diameter
AMF colonization	0.64**	0.67**	0.68**	−0.21 ns
PSB population	0.52**	0.52**	0.51**	−0.14 ns
Spore density	0.74**	0.78**	0.77**	−0.12 ns

**and ns Significant at P ≤ 0.01 and non-significant probability levels, respectively.