印度不同葡萄种植区葡萄和土壤中唑菌酯的残留。
Persistence of azoxystrobin in/on grapes and soil in different grapes growing areas of India.
机构信息
Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi 110012, India.
出版信息
Bull Environ Contam Toxicol. 2011 Jan;86(1):90-4. doi: 10.1007/s00128-010-0170-2. Epub 2010 Dec 14.
Persistence of azoxystrobin was studied in/on grapes when applied @ 150 g ai ha⁻¹ (recommended dose) and 300 g ai ha⁻¹ (double the recommended dose) in three grapes growing states of India, namely Karnataka, Maharashtra and Tamil Nadu, in the year 2006-2007. A total of five sprays were given at an interval of about 15 days. Grapes and soil samples were collected after 5th spray, extracted and analysed by gas chromatography using electron capture detector. Half life of azoxystrobin on grapes varied from 5.4 to 11.2 days. Residues of azoxystrobin were much below the prescribed MRL (0.5 mg kg⁻¹) after 21 days. The dissipation of azoxystrobin in soil followed first order rate kinetics with an average half life of 8.1 days at the recommended dose of application.
2006-2007 年，在印度的卡纳塔克邦、马哈拉施特拉邦和泰米尔纳德邦这三个葡萄种植州，以 150 g ai ha⁻¹（推荐剂量）和 300 g ai ha⁻¹（推荐剂量的两倍）的剂量对葡萄施用过嘧菌酯后，对其在葡萄上的残留持久性进行了研究。共施药 5 次，间隔约 15 天。第 5 次施药后采集葡萄和土壤样本，经提取后用气相色谱法（电子捕获检测器）进行分析。嘧菌酯在葡萄上的半衰期为 5.4-11.2 天。21 天后，嘧菌酯的残留量远低于规定的 MRL（0.5mg/kg）。嘧菌酯在土壤中的消解符合一级动力学，推荐剂量下的平均半衰期为 8.1 天。
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