RT Journal Article
T1 Copper distribution and acid‐base mobilization in vineyard soils and sediments from Galicia (NW Spain)
A1 Fernández Calviño, David
A1 Pateiro Moure, Mirian
A1 López Periago, José Eugenio
A1 Arias Estévez, Manuel
A1 Nóvoa Muñoz, Juan Carlos
K1 2511 Ciencias del Suelo (Edafología)
K1 2511.04 Química de Suelos
AB In northern Spain and elsewhere in the world, many vineyards are located on steep slopes and are susceptible to accelerated soil erosion. Contaminants, notably Cu, originating from repeated application of copper‐based fungicides to the vines to prevent mildew, are transported and stored in the sediments deposited close to valley bottoms. In this study, the contents and distribution of Cu in 17 soil samples and 21 sediment samples collected from vineyard stands were determined. In addition, the effect of pH on Cu release from vineyard soils and sediments was quantified. The total Cu content (Cu T) in the soils varied between 96 and 583 mg kg−1, and was between 1.2 and 5.6 times greater in sediment samples. The mean concentration of potentially bioavailable Cu (Cu EDTA) in the sediments was 199 mg kg−1 (46% of Cu T), and was 80 mg kg           −1 (36% of Cu T) in the soils. Copper bound to soil organic matter (Cu OM) was the dominant fraction in the soils (on average, 53% of the Cu T), while in sediment samples Cu OM values varied between 37 and 712 mg kg−1 and were significantly greater (P < 0.01) than in the soils. Copper associated with non‐crystalline inorganic components (Cu           IA) was the second most important fraction in the sediments, in which it was 3.4 times greater than in the soils. Release of Cu due to changes in the pH followed a U‐shaped pattern in soils and sediments. The release of Cu increased when the pH decreased below 5.5 due to the increased solubility of the metal at this pH. When the pH increased above 7.5, Cu and organic matter were released simultaneously.
PB European Journal of Soil Science
SN 13510754
YR 2008
FD 2008-04
LK http://hdl.handle.net/11093/5810
UL http://hdl.handle.net/11093/5810
LA eng
NO European Journal of Soil Science, 59(2): 315-326 (2008)
NO Ministerio de Educación y Ciencia | Ref. AGL2006-04231/AGR
DS Investigo
RD 14-ene-2025