Details

Autor(en) / Beteiligte

• Cui, Kai
• Ma, Guoping
• Zhao, Shengying
• Guan, Shuai
• Liang, Jingyun
• Fang, Liping
• Ding, Ruiyan
• Li, Teng
• Hao, Qian
• Dong, Zhan
• Wang, Jian

Titel

Dissipation, accumulation, distribution and risk assessment of fungicides in greenhouse and open-field cowpeas

Ist Teil von

• Food Chemistry: X, 2024-03, Vol.21, p.101172-101172, Article 101172

Ort / Verlag

Netherlands: Elsevier Ltd

Erscheinungsjahr

2024

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •Open-field cultivation enhanced fungicide dissipation more than greenhouse cultivation.•Greenhouse cultivation contributed to the pesticide residues in cowpeas after repeated spraying.•Fungicides accumulated in cowpeas after repeated spraying in both the greenhouse and open field.•Pesticide residues varied in different cowpea parts and types.•Chronic and acute risks were within a safe range. Pesticide residues in cowpeas have raised worldwide concern. However, only a few studies have focused on pesticide accumulation and distribution in greenhouse and open-field cowpeas. Field trial results suggest that difenoconazole, dimethomorph, thifluzamide and pyraclostrobin dissipated faster in open fields (mean half-lives, 1.72–1.99 days) than in greenhouses (2.09–3.55 days); moreover, fungicide residues in greenhouse cowpeas were 0.84–8.19 times higher than those in the open-field cowpeas. All fungicides accumulated in the greenhouse and open-field cowpeas after repeated spraying. Fungicide residues in old cowpeas were higher than those in tender cowpeas, and residues in the upper halves of cowpea pods were higher than those in the lower halves. In addition, cowpeas distributed in the lower halves of the plants had higher fungicide residues. Our findings suggest that greenhouse cultivation contributed to the pesticide residues in cowpeas after repeated spraying, although the levels of dietary health risks remained acceptable under both cultivation scenarios.