Pesticide Residues and Heavy Metals in Vineyard Soils of the Karst and Istria

Borut Vrščaj (), Helena Baša Česnik, Špela Velikonja Bolta, Sanja Radeka and Klemen Lisjak
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Borut Vrščaj: Agricultural Institute of Slovenia, Department of Agroecology and Natural Resources, Hacquetova ulica 17, SI 1000 Ljubljana, Slovenia
Helena Baša Česnik: Agricultural Institute of Slovenia, Central Laboratories, Hacquetova ulica 17, SI 1000 Ljubljana, Slovenia
Špela Velikonja Bolta: Agricultural Institute of Slovenia, Central Laboratories, Hacquetova ulica 17, SI 1000 Ljubljana, Slovenia
Sanja Radeka: Institute of Agriculture and Tourism, Department of Agriculture and Nutrition, Karla Huguesa 8, 52440 Poreč, Croatia
Klemen Lisjak: Agricultural Institute of Slovenia, Department of Fruit Growing, Viticulture and Oenology, Hacquetova ulica 17, SI 1000 Ljubljana, Slovenia

Land, 2022, vol. 11, issue 12, 1-19

Abstract: Pesticide residues and heavy metal concentrations were determined in two depths (0–20 and 20–40 cm) of Chromic Cambisol in 69 vineyards in the Slovenian winegrowing region of the Karst. Similarly, pesticide residues and heavy metal concentrations were also determined in two depths of Calcaric Cambisol in 11 vineyards in the other Slovenian and Croatian winegrowing regions of Istria. The topsoil (0–20 cm) was analysed for the presence of 176 different pesticidal active substances using two multiresidue analytical methods: (a) gas chromatography coupled with mass spectrometry (GC/MS) and (b) liquid chromatography coupled with tandem mass spectrometry (LC/MS/MS). Seven active substances (five fungicides and two insecticides) were detected in the soil samples. Their concentrations were compared with the maximum concentrations observed in the vineyards of the winegrowing regions of France, Italy, and Spain. In addition to pesticides, the soil samples were analysed for the presence of nine heavy metals commonly detected in vineyard soils. The concentrations of arsenic, cadmium, cobalt, chromium, copper, molybdenum, nickel, lead, and zinc were below the critical thresholds set by Slovenian legislation, with the exception of one soil sample in which the Cu concentration exceeded the critical threshold. Compared with the maximum concentrations measured in other vineyard soils in Spain, Italy, and France, the heavy metal concentrations in the vineyard soils of Karst and Istria were lower. Both the heavy metal concentrations and the residual concentrations of pesticidal active substances in the vineyard soils of the Karst and Istria regions were significantly lower than the concentrations that are occasionally discussed in the literature.

Keywords: contamination; chromic cambisol; calcaric cambisol (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2022
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