Evaluation of Pesticide Residue Dynamics in Lettuce, Onion, Leek, Carrot and Parsley
| Autor: | Kamil Holý, František Krátký, František Kocourek, Vladimir Kocourek, Petr Mráz, Jitka Stará, Tereza Horská, Jana Hajslova |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Health (social science)
pesticide residues Pesticide application Plant Science 010501 environmental sciences parsley lcsh:Chemical technology 01 natural sciences Health Professions (miscellaneous) Microbiology Article Crop half-lives lcsh:TP1-1185 onion 0105 earth and related environmental sciences Mathematics carrot Residue (complex analysis) Pesticide residue 010401 analytical chemistry pre-harvest interval food and beverages Pesticide leek 0104 chemical sciences Fungicide lettuce Horticulture Kinetic equations PEST analysis zero-residue production Food Science low-residue production |
| Zdroj: | Foods Volume 9 Issue 5 Foods, Vol 9, Iss 680, p 680 (2020) |
| ISSN: | 2304-8158 |
| DOI: | 10.3390/foods9050680 |
| Popis: | The dynamics of 32 active substances contained in pesticide formulations (15 fungicides and 17 insecticides) were analyzed in iceberg lettuce, onion, leek, carrot, and parsley. Pesticide residues were monitored from the time of application until harvest. In total, 114 mathematical models of residue dissipation were developed using a first-order kinetic equation. Based on these models, it was possible to predict the action pre-harvest interval (the time between the last pesticide application and crop harvest) needed to attain a targeted action threshold (value significantly lower than the maximum limit) for low-residue vegetable production. In addition, it was possible to determine an action pre-harvest interval based on an action threshold of 0.01 mg kg&minus 1 to produce vegetables intended for zero-residue production. The highest amount of pesticide residues were found in carrot and parsley leaves several days after treatment, and pesticide dissipation was generally slow. Lower amounts were found in leeks and lettuce, but pesticide dissipation was faster in lettuce. According to our findings, it seems feasible to apply reduced pesticide amounts to stay below unwanted residue levels. However, understanding the effectivity of reduced pesticide application for controlling relevant pest organisms requires further research. |
| Databáze: | OpenAIRE |
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