Enhancing soil organic carbon, particulate organic carbon and microbial biomass in semi-arid rangeland using pasture enclosures

Table 3 Distribution of particulate organic carbon with depth in three grazing systems in Chepareria, Kenya

Depth (cm)	Particulate organic carbon (g kg⁻¹)			Particulate organic nitrogen (g kg⁻¹)
Depth (cm)	OGR	CGE	GDE	OGR	CGE	GDE
0–10	1.40 ± 0.21Ca	2.01 ± 0.26Ba	2.28 ± 0.34Aa	0.19 ± 0.12Aa	0.16 ± 0.04Aa	0.16 ± 0.03Ab
10–20	1.20 ± 0.24Cb	1.52 ± 0.26Bb	1.80 ± 0.25Ab	0.17 ± 0.07Aa	0.18 ± 0.02Aa	0.18 ± 0.04Aab
20–40	0.88 ± 0.15Bc	1.31 ± 0.16Ac	1.32 ± 0.19Ac	0.18 ± 0.04Aa	0.18 ± 0.05Aa	0.20 ± 0.03Aa
Pooled mean	1.16 ± 0.30C	1.61 ± 0.37B	1.80 ± 0.50A	0.18 ± 0.07A	0.17 ± 0.05A	0.18 ± 0.04A

Values represent mean ± SD (n = 9). Values with different uppercase letters across the rows (grazing systems) and the lowercase letters within columns (soil depths) are significantly different at P < 0.05
GDE grazing dominated enclosure, CGE contractual grazing enclosure, OGR open grazing range

ISSN: 1472-6785