Copper accumulation and availability in vineyard soils of Serbia
2006
Ristić, M., Faculty of Technology and Metallurgy, Belgrade (Serbia) | Bokić, T., Institute for the Development of Water Resources Jaroslav Černi, Belgrade (Serbia) | Zečević, T., Faculty of Technology and Metallurgy, Belgrade (Serbia)
The focus of this work is to measure the accumulation and distribution of copper in vineyard soils in Serbia as a step towards understanding copper existence in soils and its potential for availability to flora and fauna. Several single extractions are performed in parallel to the determination of total copper content after aqua regia digestion. The use of copper-based fungicides in Serbia has increased the total copper concentration in some vineyard soils to 430 mg/kg compared to background levels of approximately 30 mg/kg. Total copper concentration has varied considerably but exceeded 100 mg/kg (national limit) in 62% of the examined soil samples. The copper distribution in the examined samples is different, the amounts of Cu extracted by the various extractants ranged as follows, when expressed relative to the total Cu content in the soils: 0.8-8.8% for NH4OAc and 5.8-44.4% for EDTA. The study shows that copper can stay active in soils for long periods of time, longer than ten years, and may result in leaching and transfer to deeper soil layers.
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