. 2021 Dec 16;12:777351. doi: 10.3389/fmicb.2021.777351

TABLE 3.

Effects of rock phosphate (RP) and phosphate-solubilizing bacteria (PSB) on soil physicochemical properties.

Treatment		pH	EC	Ca²⁺	Na⁺	Cl^–	SO₄^2–

		–	μs/cm	g/kg	g/kg	g/kg	g/kg
-PSB	T0	7.96 ± 0.01^a	1152.73 ± 39.84^b	1.93 ± 0.02^c	2.65 ± 0.01^a	1.98 ± 0.02^a	0.30 ± 0.01^b
	T1	7.83 ± 0.02^b	1281.53 ± 17.64^a	2.85 ± 0.03^a	0.13 ± 0.01^d	0.35 ± 0.02^c	0.37 ± 0.02^a
+ PSB	T0P	7.48 ± 0.01^c	1135.10 ± 11.22^d	1.1 ± 0.02^d	1.06 ± 0.01^b	1.05 ± 0.01^b	0.28 ± 0.01^c
	T1P	7.34 ± 0.03^d	1142.70 ± 27.69^c	2.1 ± 0.03^b	0.61 ± 0.01^c	0.30 ± 0.01^c	0.28 ± 0.01^c

Treatments: T0, no additions, the control (−PSB); T1, with RP amendment only (−PSB); T0P, with PSB inoculation only (+PSB); T1P, with RP and PSB (+PSB). EC, electrical conductivity. Values are the means of three replicates. Error bars represent ± standard deviation. Values sharing a common letter within the column are not significant at P < 0.05.