Geochemical characteristics of agricultural soils, Assiut governorate, Egypt

Bulletin of the National Research Centre

Table 1 Major oxides contents and LOI in the studied soil samples (%)

SN	Sand	Silt	Clay	CaCO₃%	CaSO₄%	SiO₂	Al₂O₃	Fe₂O₃	CaO	MgO	TiO₂	K₂O	Na₂O	P₂O₅	SO₃	Cl	LOI
1	22.5	43.5	34	1	8.8	44.8	14.2	13.2	6.6	2.7	2.0	1.2	0.9	2.1	3.5	0.1	8.3
2	19.5	47.25	32.75	5	0.4	48.2	15.7	14.4	4.2	2.6	2.2	1.5	0.9	0.5	0.2	0.0	9.2
3	9.75	61.75	27.5	7.5	0.4	44.1	15.0	13.1	5.1	3.1	1.9	1.4	0.8	0.7	0.2	0.0	14.1
4	11	53.25	35	7	0.2	46.0	16.4	12.9	4.1	3.3	2.1	1.1	0.8	0.3	0.1	0.0	12.3
5	32	39.25	27.5	25	0.2	46.5	14.5	14.4	5.8	2.9	2.3	1.3	1.0	0.9	0.2	0.0	9.6
6	6.25	56	35	5	0.2	44.7	15.6	13.3	3.9	3.2	2.0	1.1	1.0	0.6	0.1	0.0	13.9
7	33.48	32.5	32.5	5	0.4	50.1	14.9	13.6	4.3	2.8	1.7	1.6	0.8	0.4	0.2	0.0	9.2
8	72.5	3.5	24	7.5	0	55.5	12.5	11.0	8.8	2.1	1.8	1.4	0.5	0.5	0.2	0.0	5.3
9	58.88	21.25	20	12.5	0	56.1	12.3	10.1	6.1	2.3	1.6	1.4	0.6	1.1	0.3	0.1	7.7
10	66.45	18.75	16.25	0.5	0.2	48.1	16.3	15.5	5.3	3.0	2.5	1.5	0.9	0.4	0.1	0.0	6.0
11	46.25	35.25	19	34	0	50.8	13.6	12.3	5.7	3.0	1.9	1.3	0.9	0.3	0.3	0.0	9.3
12	71.2	10	17.5	10	0.5	58.7	8.4	5.9	14.4	1.9	1.0	1.1	0.6	1.1	0.8	0.2	7.6
13	82.5	2.75	16	0.5	0	77.1	7.6	4.6	2.9	1.0	0.6	1.1	0.3	0.8	0.3	0.0	3.3
14	17.75	50	32.5	7.5	0.5	43.4	14.3	13.3	7.1	3.2	2.2	1.2	0.8	0.4	0.1	0.0	13.1
15	60	16	24	6	1	48.0	12.3	11.7	9.1	2.9	1.7	1.4	1.3	0.4	0.9	0.6	8.3
16	17.23	51.5	31.5	10	11.4	38.8	13.8	13.0	9.6	2.6	1.6	1.3	0.9	0.5	0.9	0.2	15.7
Mean	39.2	33.9	26.6	9.0	1.5	50.1	13.6	12.0	6.4	2.7	1.8	1.3	0.8	0.7	0.5	0.1	9.5