| 噁唑菌酮与精甲霜灵复配对葡萄霜霉病的防效及药剂在葡萄中的残留 |
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| 引用本文： | 夏丽娟,卿尚飞,苏正川,杨惠玲.噁唑菌酮与精甲霜灵复配对葡萄霜霉病的防效及药剂在葡萄中的残留[J].农药学学报,2022,24(2):326-331. |
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| 作者姓名： | 夏丽娟 卿尚飞 苏正川 杨惠玲 |
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| 作者单位： | 1.四川省农药检定所，成都 610041 |
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| 摘 要： | 为明确噁唑菌酮与精甲霜灵复配在防治葡萄霜霉病上的可行性及安全性,对噁唑菌酮与精甲霜灵进行了室内联合毒力测定、田间药效及残留试验.结果表明:噁唑菌酮与精甲霜灵按质量比1:1复配,对葡萄霜霉病的联合毒力表现为增效作用,EC50值为2.52 mg/L,共毒系数(CTC)为154.53.30％ 噁唑菌酮 ? 精甲霜灵悬浮剂(噁...
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| 关 键 词： | 噁唑菌酮 精甲霜灵 葡萄霜霉病菌 联合毒力 防治效果 残留 消解 安全性 |
| 收稿时间： | 2021-06-15 |
Field efficacy of the combination of famoxadone and metalaxyl-M against Plasmopara viticola and the residue dynamics of the two fungicides in grape |
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| Affiliation: | 1.Institute for the Control of Agrochemicals, Chengdu 610041, China2.Sichuan Hairun Crop Science and Technology Co., Ltd., Jiajiang 614100, Sichuan Province, China |
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| Abstract: | To clarify the feasibility and safety of using the combination of famoxadone and metalaxyl-M against Plasmopara viticola in grape, the indoor co-toxicity test, field control efficacy test and residue behavior test were carried out. The results showed that the type of joint effect was synergistic on P. viticola when the ratio of famoxadone and metalaxyl-M was 1 : 1, with the EC50 value was 2.52 mg/L and the co-toxicity coefficient was 154.53. The best field control efficacy of 30% famoxadone + metalaxyl-M SC (at the mass ratio of 1 : 1) against P. viticola was 83.9% after 3 times of application at the dosage of 120-200 mg a.i./kg with interval of 7 d. The control effect of 30% famoxadone + metalaxyl-M SC at the dosage of 200 mg a.i./kg was significantly better than that of 68.75% famoxadone + mancozeb WG at the dosage of 687.5 mg a.i./kg, and the control effect of 30% famoxadone + metalaxyl-M SC at the dosage of 120 and 150 mg a.i./kg was significantly better than 68% metalaxyl-M + mancozeb WG at the dosage of 1360 mg a.i./kg. At the spiking levels of 0.1, 0.5 ,1.0 and 5.0 mg/kg, the average recoveries of famoxadone and metalaxyl-M in grape were 91%-107% and 92%-107%, respectively, with RSD less than 5.7%. The dissipation of famoxadone and metalaxyl-M in grape fitted to the first order kinetics and the half-lives were 8.9-12.8 d and 7.4-10.0 d, respectively, indicating that they were easily dissipated pesticides. The results suggested that the formulation of 30% famoxadone + metalaxyl-M SC (at the mass ratio of 1 : 1) could be an effective fungicide for controlling P. viticola, with the characteristics of high efficiency, low residual, easily degraded, and safe for use, and have certain future developmental value. |
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