Table 3.

Percentage of sites (N = 97), classified by macro nutrient contents (mg g⁻¹) in (1) deficient-, (2) optimum- and (3) surplus range, as well as by corresponding nutrient ratios (class 1: lower range, class 2: medium/harmonious range, class 3: upper range) according to Stefan et al. (1997).

Class Limit	N			S			P			Ca			Mg			K			Ca/Mg
	1	2	3	1	2	3	1	2	3	1	2	3	1	2	3	1	2	3	1	2	3
	18.0–25.0			1.3–2.0			1.0–1.7			4.0–8.0			1.0–1.5			5.0–10.0			3.7–8.0
1984	3	80	17	11	89	0	13	86	1	1	5	94	2	20	78	1	16	83	3	81	16
2012	1	69	30	5	91	4	85	15	0	1	36	63	12	47	41	19	79	2	6	74	20
Class Limit	N/S			N/P			N/Ca			N/Mg			N/K			K/Ca			K/Mg
	1	2	3	1	2	3	1	2	3	1	2	3	1	2	3	1	2	3	1	2	3
	9.0–19.2			10.6–25.0			2.3–6.3			12.0–25.0			1.8–5.0			0.6–2.5			3.3–10.0
1984	1	97	2	0	93	7	73	26	1	48	50	2	39	60	1	5	94	1	6	88	6
2012	0	95	5	0	14	86	22	77	1	11	81	8	0	85	15	20	79	1	18	79	3