Dynamics of novel insecticide HNPC-A9908 residue in vegetable-field ecosystem.
HNPC-A9908 (o-(3-phenoxybenzyl)-2-methylthio-l-(4-chlorophenyl) propyl ketone oxime), a novel oxime insecticide, is a highly effective and broad-spectrum insecticide which can be widely used to control many species of foliar insects on various crops. A study was conducted to evaluate the fate of HNPC-A9908 and study the degradation dynamics of HNPC-A9908 residue in vegetable field ecosystem. The results showed that degradation of HNPC-A9908 was much faster in vegetable pakchoi than in soil, and its half-life in pakchoi and soil was 1.32 and 3.75 d, respectively. The final residue of HNPC-A9908 in pakchoi was at the undetectable level to 0.122 mg/kg. As a conclusion, a dosage of 90 g/hm(2) was suggested and considered to be safe to human beings and animals.
Ou
Xiao-ming
XM
Institute of Pesticide Formulations and Application Systems, Hunan Research Institute of Chemical Industry, National Engineering and Technology Research Center for Agrochemicals, Changsha 410007, China. xmouhn@163.com
Yu
Shu-ying
SY
Fan
De-fang
DF
Wang
Xiao-guang
XG
D001673:Biodegradation, Environmental; D029741:Brassica rapa / Q000378:metabolism; D017753:Ecosystem; D006207:Half-Life; D007306:Insecticides / Q000378:metabolism*; D007700:Kinetics; D010091:Oximes / Q000378:metabolism*; D012987:Soil / Q000032:analysis
D007306:Insecticides; D010091:Oximes; D012987:Soil