Tillage Effects on Spatiotemporal Variability of Particulate Organic Matter

Table 1

Statistical summary of the surface horizon (0–0.15 m) characteristics in August 2003.

Field		Total C (g C m^-2)	Total N (g N m^-2)	Sand (%)	Silt (%)	Clay (%)	BD (Mg m^-3)	Water content (m^3m^-3)
North	Mean	1287	115.6	27.3	54.3	18.6	1.40	0.10
	Minimum	994	92.8	20.5	46.2	13.2	0.81	0.05
	Maximum	1524	145.3	42.7	59.6	22.5	1.88	0.16
	CV (%)^†	9	10	23	7	14	18	27
South	Mean	1100	105.8	37.0	48.2	14.8	1.47	0.08
	Minimum	698	72.7	23.3	37.1	11.1	0.98	0.04
	Maximum	1448	128.7	48.9	59.6	20.7	1.86	0.14
	CV (%)	17	13	20	12	16	15	33

^†CV: coefficient of variation.