Pesticide residual status in litchi orchard soils in Guangdong, China

Litchi is a famous tropical and subtropical fruit originated in South China. Guangdong is one of the most important litchi production areas in China. Two hundred and eight soil samples were collected in litchi orchards after harvesting the fruit, in which nine often-used pesticides including metalax...

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Bibliographic Details
Published inHuanjing kexue Vol. 31; no. 11; p. 2723
Main Authors Yao, Li-Xian, Huang, Lian-Xi, Li, Guo-Liang, He, Zhao-Huan, Zhou, Chang-Min, Yang, Bao-Mei, Guo, Bin
Format Journal Article
LanguageChinese
Published China 01.11.2010
Subjects
China
Environmental Monitoring
Litchi - growth & development
Pesticide Residues - analysis
Soil Pollutants - analysis
China
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Summary:Litchi is a famous tropical and subtropical fruit originated in South China. Guangdong is one of the most important litchi production areas in China. Two hundred and eight soil samples were collected in litchi orchards after harvesting the fruit, in which nine often-used pesticides including metalaxyl, mancozeb, carbendazim, deltamethrin, cypermethrin, cyhalothrin, dipterex, dimethoate and dichlorvos were detected. The results showed that the detectable rates of various pesticides were ranked cypermethrin (59.1%) > carbendazim (51.0%) > mancozeb (11.1%) > metalaxyl (6.7%) > cyhalothrin (3.4%). Dimethoate and dichlorvos were detectable in few soil samples, and deltamethrin and dipterex were undetectable in all samples. The percentages of soil samples where different pesticides could be detected in one sample followed the order: one pesticide detectable (40.4%) > two pesticides simultaneously detectable (31.3%) > pesticide undetectable (18.8%) > three pesticides simultaneously detectable (8.2%) > four pesticide
ISSN:0250-3301