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Open AccessArticle

Effect of Growing Groundcover Plants in a Vineyard on Dissipation of Two Neonicotinoid Insecticides

1
Department of Agricultural Chemistry, National Taiwan University, Taipei 10617, Taiwan
2
Department of Civil and Ecological Engineering, I-Shou University, Kaohsiung 84001, Taiwan
3
Taichung District Agricultural Research and Extension Station, COA, Chunghua 51544, Taiwan
4
International Bachelor Program of Agribusiness, National Chung-Hsing University, Taichung 40227, Taiwan
*
Author to whom correspondence should be addressed.
Sustainability 2019, 11(3), 798; https://doi.org/10.3390/su11030798
Received: 25 December 2018 / Revised: 28 January 2019 / Accepted: 30 January 2019 / Published: 3 February 2019
(This article belongs to the Special Issue Green and Sustainable Remediation of Contaminated Site)
This study investigated the difference in neonicotinoids dissipation in a grape vineyard by planting different groundcovers plants, including a control bare field (CF), Arachis pintoi Krap. and Greg. (peanut field (PF)) and Clinopodium brownei (Sw.) Kuntze (mint field (MF)). After one day of pesticide spraying, the highest dinotefuran residue concentration was in 0- to 15-cm soil in the CF (0.161 mg/kg), but 30- to 45-cm and 15- to 30-cm soil in the MF and PF, respectively (0.307 and 0.033 mg/kg). Also, after four days, the highest imidacloprid residue concentration was in 0- to 15-cm soil in the CF. Imidacloprid was not retained in the 30- to 45-cm soils in the PF, but in the MF, a 0.015- and 0.011-mg/kg residue was detected in 30- to 45-cm soil in the second and third soil samplings, indicating a different distribution with different groundcover plants. The dinotefuran absorption ability was greater with A. pintoi than C. brownei, and the imidacloprid absorption ability was greater with C. brownei. Our results suggest that groundcover plants affect the dissipation of neonicotinoids differently, while A. pintoi has a high metabolic rate toward the two neonicotinoids and can increase the soil organic matter content, which is a preferable choice for a groundcover. View Full-Text
Keywords: ground cover plants; vineyard; dinotefuran; imidacloprid ground cover plants; vineyard; dinotefuran; imidacloprid
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MDPI and ACS Style

Yen, J.-H.; Liao, C.-S.; Kuo, Y.-W.; Chen, W.-C.; Huang, W.-T. Effect of Growing Groundcover Plants in a Vineyard on Dissipation of Two Neonicotinoid Insecticides. Sustainability 2019, 11, 798.

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