Organic Amendments and Earthworm Addition Improve Properties of Nonacidic Mine Tailings
Table 5
Mean (± standard deviation) pH, electrical conductivity, Bray extractable phosphorus, cation exchange capacity, and water holding-capacity at the end of the study (week 29). Values designated by same letter (within a column) are not significantly different from each other (; ).
Treatment
pH
EC (dS m−1)
Bray P (mg P kg−1)
CEC (cmolc kg−1)
WHC (g H2O 100 g−1)
Treatments with 10% biosolids
T1-WO
bcd
de
cd
ef
abc
T1-W
de
de
bc
cdef
bcd
T2-WO
bc
ef
cd
f
d
T2-W
cde
de
a
cdef
cd
T3-WO
a
f
cd
cdef
bcd
T3-W
bcd
ef
a
def
abc
T4-WO
b
a
d
f
e
Treatments with 20% biosolids
T5- WO
cd
cde
bc
abc
a
T5-W
def
cd
abc
abc
ab
T6-WO
ef
cde
bc
bcde
bcd
T6-W
f
bc
ab
bcd
ab
T7-WO
cde
cd
bc
a
abc
T7-W
bc
de
a
ab
ab
T8-WO
cde
a
bc
ab
d
Bray P, CEC, and WHC are expressed relative to oven-dry (mass) tailings.
