Neonicotinoid contamination in wildflowers collected from citrus orchards in a northwestern Mediterranean Region (Spain) after tree foliar treatments
Visualitza/Obre
Autor/a
García-Valcárcel, Ana Isabel
Campos-Rivela, José Miguel
Hernando Guil, María Dolores
Martínez-Ferrer, María Teresa
Data de publicació
2022-03-14ISSN
0944-1344
Resum
Ground-cover vegetation attracts and harbors beneficial insects to the agrosystem, playing an important role in conservation biological control. Integrated pest management (IPM) program guidelines recommend the implantation of sowed or resident wild covers in perennial crops. Given the high-quality fruit requirements, even in IPM programs, insecticides can be required in citrus crops. This study presents, over a year, the levels of neonicotinoids (thiamethoxam and imidacloprid) in not-target ground-cover wildflowers growing spontaneously in citrus orchards after foliar treatment of citrus trees. The presence and persistence of these neonicotinoids in different wildflower species were studied. Concentrations of thiamethoxam and imidacloprid in whole wildflowers ranged from < method quantification limit (MQL) to 52.9 ng g−1 and from < MQL to 98.6 ng g−1, respectively. Thiamethoxam was more frequently detected than imidacloprid. Thiamethoxam and imidacloprid were detected up to 336 and 230 days after treatment, respectively. The highest detection frequencies (100%) and highest thiamethoxam and imidacloprid mean concentrations (26.0 ± 7.3 ng g−1 and 11.0 ± 10.6 ng g−1, respectively) occurred in wildflowers collected 9 days after the treatments. Since application, a clear decrease in the concentration of both compounds and differences in the accumulation depending on wildflower species were observed. Cross contamination was detected, indicating a transport from adjacent treated plots. Maintaining a cover crop in citrus orchards may lead to detrimental effects on non-target arthropods if these neonicotinoid compounds are used for pest control since they can entail a chronic exposure during at least 230 days for imidacloprid and 336 days for thiamethoxam.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
English
Matèries (CDU)
632 - Malalties i protecció de les plantes
Pàgines
14
Publicat per
Springer
Publicat a
Environmental Science and Pollution Research (ESPR)
Citació
García-Valcárcel, Ana Isabel, José Miguel Campos-Rivela, María Dolores Hernando Guil, and María Teresa Martínez-Ferrer. 2022. "Neonicotinoid Contamination In Wildflowers Collected From Citrus Orchards In A Northwestern Mediterranean Region (Spain) After Tree Foliar Treatments". Environmental Science And Pollution Research. doi:10.1007/s11356-022-19331-7.
Número de l'acord de la subvenció
INIA/Programa Estatal de I+D+I orientada a los retos de la sociedad/RTA2013-00042-C10-01/ES/Impacto de contaminantes sobre la abundancia y diversidad de polinizadores silvestres y abejas melíferas. Evaluación de efectos sobre el sistema inmunitario y reproductivo. Estudios de campo/
INIA/Programa Estatal de I+D+I orientada a los retos de la sociedad/RTA2013-00042-C10-01/ES/Estudios de campo del impacto de los neonicotinoides y otros productos fitosanitarios utilizados en fruticultura sobre las poblaciones de abejas/
Programa
Protecció Vegetal Sostenible
Aquest element apareix en la col·lecció o col·leccions següent(s)
- ARTICLES CIENTÍFICS [2802]
Excepte que s'indiqui una altra cosa, la llicència de l'ítem es descriu com http://creativecommons.org/licenses/by/4.0/