Table 3. Descriptive statistics of soil pH, and elemental concentrations by locality.

Locality	Statistic	Concentration (mg kg-1 dw)
		Ca	Cu	I	Fe	Mg	Se	Se-P	Zn	pH
Baringo	n	5	5	5	5	5	5	5	5	5
	Mean	38400	23.7	0.923	66200	15000	0.550	0.027	97.7	7.88
	Median	52000	31.1	1.06	67000	19500	0.664	0.035	92.9	7.96
Derashe	n	12	12	12	12	12	12	12	12	12
	Mean	28400	33.4	0.851	69200	13700	0.255	0.006	88.0	8.40
	Median	30600	31.2	0.748	74900	14800	0.222	0.006	90.7	8.48
Hawassa	n	9	9	9	9	9	9	9	9	9
	Mean	15800	13.0	1.13	35400	4800	0.599	0.011	260	7.43
	Median	14100	8.62	0.941	32900	3800	0.622	0.010	229	7.66
Kibwezi	n	14	14	14	14	14	14	14	14	14
	Mean	14200	24.0	1.72	33000	4020	0.362	0.024	54.0	7.88
	Median	12800	21.7	1.41	29300	3260	0.366	0.023	51.5	7.89
Konso	n	12	12	12	12	12	12	12	12	12
	Mean	18700	26.2	0.771	56000	7120	0.239	0.004	85.725	7.595
	Median	21800	35.0	0.676	63100	6100	0.204	0.005	83.1	7.59
Malindi	n	11	11	11	11	11	11	11	11	11
	Mean	7290	4.72	0.955	12200	566	0.179	0.019	39.9	8.40
	Median	4000	5.63	0.768	14500	591	0.177	0.018	45.4	8.44
Mbololo	n	16	16	16	16	16	16	16	16	16
	Mean	13400	10.3	1.43	22300	3210	0.241	0.020	39.8	7.53
	Median	12900	9.38	1.30	21300	3260	0.203	0.018	39.7	7.50
Ramogi	n	8	8	8	8	8	8	8	8	8
	Mean	3550	35.5	3.24	68900	2210	0.550	0.018	87.8	7.81
	Median	3670	21.3	2.81	53600	2020	0.529	0.019	81.6	7.81
Ukunda	n	7	7	7	7	7	7	7	7	7
	Mean	12900	7.55	1.00	7690	715.3	0.155	0.014	92.3	7.94
	Median	14600	7.07	0.923	8040	839	0.169	0.013	102	7.83
Ethiopia	n	33	33	33	33	33	33	33	33	33
	Mean	21400	25.2	0.898	55200	8870	0.343	0.007	134	7.84
	Median	22300	30.7	0.773	51200	6700	0.281	0.006	101	7.98
Kenya	n	61	61	61	61	61	61	61	61	61
	Mean	13200	16.5	1.56	31000	3470	0.313	0.020	60.2	7.88
	Median	11800	11.3	1.20	23500	2300	0.239	0.018	53.5	7.85
Total	n	94	94	94	94	94	94	94	94	94
	Mean	16100	19.6	1.33	39500	5360	0.324	0.016	86.1	7.87
	Median	13700	13.0	0.972	29700	3130	0.240	0.015	66.0	7.88