Assessment of Selected Physicochemical Properties of Soils under Different Land Uses and Topographic Positions at Gola Wachu Subwatershed, Eastern Ethiopia

Table 4

Soil exchangeable bases, cation exchange capacity, and percent base saturation under different land uses in each topographic position in the subwatershed.

Soil properties	Land use types	Topographic positions
		Lower	Middle	Upper	LSD(0.05)
Ca (cmol (+)/kg)	Cultivated land	19.54^a	19.25^ab	18.23^b	2.68
	Grazing land	21.98^a	21.18^ab	20.0^b
	Fallow land	20.59^a	20.36^ab	19.86^b
Mg (cmol (+)/kg)	Cultivated land	9.08^a	8.23^b	7.85^a	1.07
	Grazing land	10.14^a	9.93^b	9.85^c
	Fallow land	9.72^a	9.04^b	8.92^c
K (cmol (+)/kg)	Cultivated land	0.92^a	0.68^b	0.56^c	0.073
	Grazing land	1.17^a	1.07^b	0.98^c
	Fallow land	1.02^a	0.84^b	0.68^c
Na (cmol (+)/kg)	Cultivated land	0.84^ba	0.71^b	0.65^c	0.096
	Grazing land	0.92^a	0.81^b	0.75^c
	Fallow land	0.87^a	0.76^b	0.72^b
CEC (cmol (+)/kg)	Cultivated land	48.66^a	47.07^b	46.04^c	1.37
	Grazing land	52.06^a	51.15^b	50.11^c
	Fallow land	51.33^a	49.84^b	49.22^b
PBS (%)	Cultivated land	61.41^a	60.88^a	57.69^a	NS
	Grazing land	70.72^a	66.04^a	60.88^a
	Fallow land	65.11^a	63.60^a	60.71^a

CEC = cation exchange capacity; PBS = percent base saturation; LSD = least significant different; NS = nonsignificant; means within a row and column followed by a different letter in superscripts are significantly different at according to Fisher’s LSD.