Table 4.

Soil properties and their association with the presence of soil-borne pathogens.

Soil component (mg/Kg)	Negative	Positive	F-test	T-test
	Avg. (Range)	Avg. (Range)
	(n = 131)	(n = 14)
Bacillus anthracis
Organic matter	2.37 (0.0408–6.73)	3.29 (1.25–7.25)	0.357	0.035
Magnesium	11.75 (0.102–82.24)	1.20 (0.33–2.60)	0.000	0.000
Copper	0.42 (0.03–3.083)	0.27 (0.12–0.69)	0.048	0.014
Chromium	0.12 (0.002–0.25)	0.16 (0.12–0.23)	0.003	0.000
Manganese	0.07 (0.02–0.89)	0.029 (0.02–0.04)	0.045	0.000
Cobalt	0.06 (0.004–0.15)	0.092 (0.06–0.13)	0.000	0.001
Cadmium	0.21 (0.03–0.47)	0.27 (0.11–0.42)	0.030	0.024
Sodium	26.85 (0.06–150.70)	8.98 (0.38–15.30)	0.000	0.000
Ferrous	0.63 (0.04–5.59)	0.19 (0.09–0.33)	0.006	0.000
Calcium	23.79 (0.09–103.60)	1.61 (0.12–4.18)	0.000	0.000
Potassium	38.40 (0.12–194.80)	1.01 (0.07–4.70)	0.000	0.000
Francisella tularensis
Soil component (mg/Kg)	(n = 126)	(n = 19)	F-test	T-test
Phosphorus	42.00 (1.00–146.70)	25.55 (5.0–107.20)	0.05	0.013
Coxiella burnetii
Soil component (mg/Kg)	(n = 138)	(n = 07)	F-test	T-test
Magnesium	11.25 (0.12–82.20)	0.56 (0.27–0.68)	0.000	0.000
Cobalt	0.07 (0.005–0.15)	0.10 (0.08–0.14)	0.003	0.002
Sodium	25.05 (0.06–140.70)	7.04 (5.71–8.31)	0.001	0.000
Ferrous	0.61 (0.04–5.59)	0.19 (0.14–0.29)	0.049	0.000
Calcium	22.68 (0.08–103.60)	1.23 (0.98–1.56)	0.000	0.000
Potassium	36.48 (0.12–194.80)	1.53 (0.11–6.53)	0.000	0.000