Potential Use of Organic- and Hard-Rock Mine Wastes on Aided Phytostabilization of Large-Scale Mine Tailings under Semiarid Mediterranean Climatic Conditions: Short-Term Field Study

Table 6

Evolution of the concentration of copper in aerial plant biomass (mean ± standard deviation, n = 3) from the time of establishment of the field assay (year 1 or 2006) and after 2 years (year 3 or 2008). Codes of treatments follow Table 1. Values followed by the same letter are not significantly different at P < 0.05 according to a two-way ANOVA and LSD Fisher test.

Treatment	Cu in shoot (mg kg^−1)
	Y1	Y3
C	237 ± 120.3^abc	203 ± 19.6^abc
RM	310 ± 215.7^bcd	390 ±433.4^cde
RMS	90 ± 8.3^a	270 ± 217.0^bcd
B1	826 ± 480.6^f	207 ± 90.5^abc
B2	—	144 ± 40.9^ab
G1	189 ± 69.8^abc	345 ± 268.8^bcde
G2	231 ± 114.9^abc	187 ± 48.4^abc
O1	559 ± 428.9^e	—
O2	507 ± 493.2^de	280 ± 202.4^bc
GB	427 ± 274.4^de	154 ± 31.5^ab
GM	316 ± 293.3^bcde	180 ± 35.4^abc
OB	235 ± 104.9^abc	207 ± 94.2^abc
OM	275 ± 83.4^bcd	312 ± 162.8^bcde

Y1: year 1; Y3: year 3.