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Assessment of pesticide residues in waters and soils of a vineyard region and its temporal evolution
Sustainable agriculture practices and integrated pest management for avoiding environmental pollution are necessary to maintain a high yield in vineyard areas. Pesticide residues in groundwater in a vineyard area of La Rioja (Spain) have been evaluated in previous years, and they could now have vari...
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| Published in: | Environmental pollution (1987) 2021-09, Vol.284, p.117463-117463, Article 117463 |
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| Main Authors: | , , , , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
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| Summary: | Sustainable agriculture practices and integrated pest management for avoiding environmental pollution are necessary to maintain a high yield in vineyard areas. Pesticide residues in groundwater in a vineyard area of La Rioja (Spain) have been evaluated in previous years, and they could now have varied after farmers have adopted the different measures recommended. Accordingly, this research's objectives were (i) to evaluate the occurrence and seasonal distribution (spring, summer, and autumn samplings) of pesticides (36) plus their degradation products (DP) (11) in water and soil samples (23 + 15) in La Rioja (Northern Spain), and (ii) to compare the current water quality (2019) with that determined previously (2011). A multi-residue method based on solid phase extraction (for water samples) or solid liquid extraction (for soil samples) and high-performance liquid chromatography coupled to mass spectrometry (HPLC-MS) was used to determine and quantify pesticides. The results reveal the presence in waters of 30 compounds from those selected (15 fungicides + 2 DP, 7 insecticides + 1 DP, and 3 herbicides +2 DP), with 14 of them at concentrations > 0.1 μg L−1 (water quality threshold for human consumption). The highest number of compounds was detected in summer (waters) and spring (soils). The pesticides most frequently detected in water samples were the fungicides metalaxyl, tebuconazole, and boscalid, with the last one being the compound found in the highest number of soil samples. The comparison of water pollution in 2011 and 2019 indicates a significant decrease in the total concentration of herbicides, fungicides and insecticides in 95–100%, 76–90%, and 42–85% of samples in the three campaigns, respectively. The results indicate that an optimized and sustainable use of pesticides in intensive and high-yield agricultural areas could reduce environmental pollution.
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•One or more pesticides were detected in all water and soil samples evaluated.•Metalaxyl, tebuconazole, and boscalid were the most frequently detected in waters.•Boscalid was the most ubiquitous pesticide detected in soils (45% of samples).•The highest concentrations were recorded in summer (waters) and spring (soils).•Temporal evaluation indicated a decrease in water pollution from 2011 to 2019.
Seasonal evaluation of pesticides in 2019 indicated the highest number of compounds detected in summer (waters) and spring (soils) and temporal evaluation in 2011 and 2019 indicated a de |
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| ISSN: | 0269-7491 1873-6424 |
| DOI: | 10.1016/j.envpol.2021.117463 |