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- Title
Residue and Safety Use of 45% Prochloraz EW in Ginger.
- Authors
Feng Yizhi; Han Jifeng; Qi Xiaoxue; Wang Xiaoyu; Pan Jinju; Jin Jie; Liang Lin; Zuo Bojun
- Abstract
[Objective] The paper was to evaluate the safety of 45% prochloraz EW in ginger, and to study the residue and degradation of 45% prochloraz EW in ginger. [Method] 45% Prochloraz EW was sprayed once at the dose of 455.625 g a.i./ha in dynamic degradation test, and ginger plants were collected at 2 h, 1, 3, 5, 7, 14, 21, 28, 35 and 42 d post spraying, respectively. 45% Prochloraz EW was sprayed at the doses of 303.75 and 455.625 g a.i.Zha for 2-3 times with an interval of 7 d in final residue test, and ginger plants were collected at 7, 14 and 21 d post spraying, respectively. The content of prochloraz was quantitatively analyzed by gas chromatography. [Result] Dynamic degradation test demonstrated that prochloraz degraded quickly in plants, and the half-life in Shandong and Anhui were 5.8 and 7.9 d, respectively. The final residue of prochloraz in ginger samples was <0-01-0.145 mg/kg, lower than the maximum residue limit of prochloraz in ginger formulated by European Union (0.2 mg/kg). [Conclusion] Prochloraz should be sprayed at the recommended dose of 202.5-303.75 g a.i./ha for prevention and control of anthracnose on ginger. The agent should be sprayed twice in the early stage of incidence, with an interval of 7 d, and the safety interval of 14 d was safe.
- Subjects
SHANDONG Sheng (China); ANHUI Sheng (China); EUROPEAN Union; GINGER; SPRAYING &; dusting in agriculture; DYNAMIC testing; GAS chromatography; PLANT collecting; SPRAYING
- Publication
Plant Diseases & Pests, 2019, Vol 10, Issue 5/6, p28
- ISSN
2152-3932
- Publication type
Article
- DOI
10.19579/j.cnki.plant-d.p.2O19.05-06.008