Table 1.

Chemical analysis of the soil sample from the Puchuncaví Valley.

pH (Water)	5.54 ± 0.13
Electrical conductivity (CE) (dS L−1)	0.1 ± 0.09
Organic matter (%)	2.41 ± 0.16
N total (%)	0.1 ± 0.02
N available (mg ·kg−1)	28.7 ± 1.78
P available (mg ·kg−1)	40.3 ± 3.47
K interchangeable (mg ·kg−1)	210 ± 8.21
Cu total (mg ·kg−1)	385 ± 14.53
Zn total (mg ·kg−1)	183 ± 7.93
Cd total (mg ·kg−1)	1.1 ± 0.07
Pb total (mg ·kg−1)	135 ± 6.91
As total (mg ·kg−1)	52 ± 3.65