Quantitative analysis of translocation of tetraniliprole as a seed dresser
| Autor: | Sushil Ahlawat, Reena Chauhan |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010504 meteorology & atmospheric sciences
Pyridines Metabolite Tetrazoles 010501 environmental sciences Management Monitoring Policy and Law Quechers 01 natural sciences High-performance liquid chromatography chemistry.chemical_compound Chromatography detector Chromatography High Pressure Liquid 0105 earth and related environmental sciences General Environmental Science Detection limit Residue (complex analysis) Chemistry Pesticide Residues food and beverages Sowing General Medicine Pollution Horticulture Seeds Pyrazoles Quantitative analysis (chemistry) Environmental Monitoring |
| Zdroj: | Environmental Monitoring and Assessment. 192 |
| ISSN: | 1573-2959 0167-6369 |
| Popis: | To ensure the plant health and safety of natural enemies and pollinators, seed dressing is preferred over foliar application. It is an eco-friendly approach of crop protection at low doses. Tetraniliprole as a seed dresser was applied on maize seeds at 3.6 and 7.2 g a.i./kg as a proposed dose and twice the proposed dose, respectively. The present field study assessed the quantitative translocation of tetraniliprole and its toxic metabolite chinazolinone in maize leaves, immature cob, stove, and grains using the QuEChERS method. The quantification of residue was carried on HPLC equipped with reverse phase ZORBAX Eclipse Plus C18 column (4.6 × 250; 5 μ) and diode array detector. Limit of detection and limit of quantification were worked out to be 0.01 and 0.05 mg kg-1, respectively. All calibration curves showed a good linear relationship (r2 > 0.99) within test ranges (0.01-0.5 μg ml-1). Samples of maize leaves were collected on the 20th day after sowing considered "0" day. Initial residues of tetraniliprole in maize leaves were 0.921 and 1.377 mg kg-1 at proposed and twice the proposed dose, respectively, and reached below limit of quantification (LOQ) 0.05 mg kg-1 on the 7th and 15th day, respectively. Chinazolinone was not detected at both the doses. Estimation of tetraniliprole as well as its metabolite persistivity in immature cob at fruiting stage, mature grain, stove, and soil collected at harvest time revealed residues below LOQ. |
| Databáze: | OpenAIRE |
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