Table 1: Content components in the phytoavailable form (Сavail) (mean ± standard deviation, n = 3) and the ratio Сavail/Сtotal (Сtotal - total content) in ameliorants (CW, SM)

Component CW
рН – H2O 9.2 ± 0.1		 SM
рН – H2O 8.4 ± 0.1
Сavail, mg kg-1 Сavail/Сtotal, % Сavail, mg kg-1 Сavail/Сtotal, %
K 18 ± 3 - 10 ± 2 -
P 89 ± 9 - 15 ± 5 -
Ca 123021 ± 485 87.3 2931 ± 112 83.7
Mg 1821 ± 121 1.1 26211 ± 625 11.7
Fe 530 ± 49 1.2 24 ± 7 0.1
Mn 153 ± 17 9.6 159 ± 18 31.8
Zn 3 ± 2.3 - 1 ± 0.9 -
S 35 ± 4.3 - 18 ± 2 -
Cu 7 ± 4.5 1.8 0.2 ± 0.1 0.0
Ni 6 ± 4.2 6.0 25 ± 9.3 1.5

n - number of measurements, CW - carbonatite wastes, SM - serpentinite magnesite