Valle, S.R., Carrasco, J., Pinochet, D. and MacDonald (In memoriam), R. 2014. Spatial and temporal variability of nutrient availability and soil acidity condition in volcanic soils. Agro sur. 42, 3 (Dec. 2014), 15–22. DOI:https://doi.org/10.4206/agrosur.2014.v42n3-02.