N, P, and K Budgets and Changes in Selected Topsoil Nutrients over 10 Years in a Long-Term Experiment with Conventional and Organic Crop Rotations

Table 1

Mean values of selected soil physical parameters in topsoil (0–30 cm) measured in 1988, prior to the start of the experiment (from [21]).

System	Parameter number^1
	1	2	3	4	5	6	7	8	9	10
CA1	51	10	11	29	12	7	6	43	38	19
CA2	48	10	6	27	11	3	9	52	33	15
OA	49	7	7	30	12	4	6	46	35	19
CM	48	9	8	27	12	5	9	47	35	19
OM1	49	7	9	30	12	6	8	50	33	17
OM2	50	8	7	30	12	4	5	45	36	19
s.e.^2	1.5	1.2	2.5	1.2	0.5	2.1	1.5	1.5	1.0	1.0
Mean	49	9	8	29	12	5	7	47	35	18

¹Parameter number: (1) total porosity (%), (2) air capacity at pF2 (%), (3) air permeability at pF2 (𝜇m²), (4) total available water (pF 2–4.2) (%), (5) nonavailable water (pF>4.2) (%), (6) hydraulic conductivity (cm/h), (7) gravel content (%), (8) sand content (%), (9) silt content (%), (10) clay content (%).
² Standard error of means.