Rate of degradation of λ-cyhalothrin and methomyl in grapes (Vitis vinifera L.)

被引:22
作者
Banerjee, Kaushik [1 ]
Upadhyay, Ajay Kumar [1 ]
Adsule, Pandurang G. [1 ]
Patil, Sangram H. [1 ]
Oulkar, Dasharath P. [1 ]
Jadhav, Deepak R. [1 ]
机构
[1] Natl Res Ctr Grapes, Pune 412307, Maharashtra, India
来源
FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT | 2006年 / 23卷 / 10期
关键词
grape; residue; dissipation; lambda-cyhalothrin; methomyl; pre-harvest interval;
D O I
10.1080/02652030600838613
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Rates of degradation of lambda-cyhalothrin and methomyl residues in grape are reported. The dissipation behavior of both insecticides followed first-order rate kinetics with similar patterns at standard and double-dose applications. Residues of lambda-cyhalothrin were lost with pre-harvest intervals (PHI) of 12.0-12.5 and 15.0-15.5 days, corresponding to the applications at 25 and 50 g a.i. ha(-1), respectively. In the case of methomyl, residues were lost with PHI of 55.0 and 61.0 days, following applications at 1 and 2 kg a.i. ha(-1), respectively. The PHI, recommended on the basis of the experimental results, was shown to be effective in minimizing residue load of these insecticides below their maximum residue limits (MRLs) in vineyard samples.
引用
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页码:994 / 999
页数:6
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