Table 3.

Concentration of agronomically-beneficial components in HSW amendments. Agronomic components include plant-available N (NH₄⁺ + NO₃^–), P, K, Ca, Mg, S, micronutrients (B, Cu, Mn, Zn) reserve plant-available K⁺, Ca²⁺, and Mg²⁺ retained through CEC, CaCO₃ equivalency, and BC₊₁₀₀. Data are the average of two measurements ± standard deviation.

Highest heating temperature (°C)
Agronomic component	Unit	60 (compost)	200	300	400	500	600	700
N (NH4++ NO3–)	mg/kg amendment	429 ± 2	780 ± 5	26.3 ± 2.0	11.6 ± 1.4	4.5 ± 4.8	2.1 ± 0.3	0.5 ± 0.0
P	g/kg amendment	1.44 ± 0.09	7.70 ± 0.52	6.65 ± 0.32	7.18 ± 0.45	8.15 ± 0.43	9.17 ± 0.58	7.64 ± 0.30
K	g/kg amendment	2.93 ± 0.15	1.42 ± 0.45	15.1 ± 0.59	17.3 ± 0.73	19.9 ± 0.60	21.8 ± 0.59	17.7 ± 0.53
Ca	g/kg amendment	5.12 ± 0.28	3.72 ± 0.21	2.86 ± 0.16	3.26 ± 0.35	3.51 ± 0.10	2.80 ± 0.17	4.16 ± 0.15
Mg	g/kg amendment	1.37 ± 0.08	4.23 ± 0.29	4.04 ± 0.18	4.32 ± 0.29	5.66 ± 0.38	6.43 ± 0.44	4.28 ± 0.16
S	mg/kg amendment	171 ± 1	520 ± 30	176 ± 12	220 ± 19	261 ± 20	298 ± 20	320 ± 6
Micronutrients (B + Cu + Mn + Zn)	mg/kg amendment	355 ± 18	297 ± 14	138 ± 5	171 ± 10	207 ± 10	237 ± 11	252 ± 7
CEC (K+ + Ca2+ + Mg2+)	g/kg amendment	9.56 ± 0.16	4.82 ± 0.31	9.43 ± 0.52	7.94 ± 0.27	6.20 ± 0.41	3.75 ± 0.33	4.19 ± 0.24
CaCO3	%w/w amendment	4.0 ± 1.3	0.5 ± 0.7	2.0 ± 0.2	4.9 ± 0.6	7.3 ± 0.2	5.6 ± 0.0	1.0 ± 0.6
BC+100	%w/w amendment	2.7 ± 3.4	11.2 ± 3.7	44.1 ± 2.1	60.5 ± 0.6	77.1 ± 3.4	85.2 ± 0.9	92.9 ± 1.0