Dissipation Kinetics of Trifloxystrobin-Tebuconazole mixture in Brinjal and Cowpea and their Risk Assessment.

Thomas George; Ambily Paul; Santhoshkumar T

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Dissipation Kinetics of Trifloxystrobin-Tebuconazole mixture in Brinjal and Cowpea and their Risk Assessment.

机译：Dissipation Kinetics of Trifloxystrobin-Tebuconazole mixture in Brinjal and Cowpea and their Risk Assessment.

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Entomology, College of Agriculture, Kerala Agricultural University, Vellayani, Thiruvananthapuram 695522, Kerala, India A method for estimation of residues of tebuconazole, trifloxystrobin and its metabolite in brinjal and cowpea was validated using liquid chromatography-tandem mass spectrometry with coefficient of determination (R2) >0.99. The untreated samples fortified with tebuconazole and trifloxystrobin, its metabolite in three levels 0.05 0.25 and 0.5 ug g~showed an acceptable recovery in the range of 72 to 118 per cent with relative standard deviation, RSD < 14.25. Nativo 75 WG, was applied thrice at the normal and double dosages at 7 d interval in brinjal from fruit setting, and applied at 7 d interval starting from pod formation stage in cowpea. Half-life of total trifloxystrobin at lower and higher doses was 0.44 and 1.02 d on brinjal, 0.85 and 1.22 d on cowpea, respectively. The half-life of tebuconazole on brinjal was 1.38 and 1.17 d, whereas in cowpea, the corresponding values were 0.99 and 1.61 d. The calculated waiting periods were 1.57 and 3.39 d for total trifloxystrobin and 5.15 and 4.90 d for tebuconazole in brinjal; while in cowpea the values were 3.01 and 6.09 d (total trifloxystrobin) and 3.96 and 6.88 d (tebuconazole). The risk assessment of the residues revealed that the combination product applied at lower and higher doses in brinjal and cowpea did not pose any risk to humans, even on the same d of application and hence can be safely recommended for management of pest complex in brinjal and cowpea under Indian conditions.

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《Pesticide Research Journal》 |2021年第2期|90-98|共9页
作者
Thomas George; Ambily Paul; Santhoshkumar T;
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作者单位

Pesticide Residue Research and Analytical Laboratory, All India Network Project on Pesticide Residues;

Department of;

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原文格式 PDF
正文语种英语
中图分类植物保护;
关键词
Trifloxystrobin; tebuconazole; brinjal; cowpea; fungicide; dissipation; risk assessment.;

Dissipation Kinetics of Trifloxystrobin-Tebuconazole mixture in Brinjal and Cowpea and their Risk Assessment.

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