张建平, 张福金, 王振, 哈斯, 张欣昕. 氟噻唑吡乙酮对马铃薯晚疫病最低有效防控剂量的研究[J]. 农药学学报, 2020, 22(3): 556-560. DOI: 10.16801/j.issn.1008-7303.2020.0042
    引用本文: 张建平, 张福金, 王振, 哈斯, 张欣昕. 氟噻唑吡乙酮对马铃薯晚疫病最低有效防控剂量的研究[J]. 农药学学报, 2020, 22(3): 556-560. DOI: 10.16801/j.issn.1008-7303.2020.0042
    ZHANG Jianping, ZHANG Fujin, WANG Zhen, HA Si, ZHANG Xinxin. Minimum effective dosage of oxathiapiprolin for the control of potato late blight[J]. Chinese Journal of Pesticide Science, 2020, 22(3): 556-560. DOI: 10.16801/j.issn.1008-7303.2020.0042
    Citation: ZHANG Jianping, ZHANG Fujin, WANG Zhen, HA Si, ZHANG Xinxin. Minimum effective dosage of oxathiapiprolin for the control of potato late blight[J]. Chinese Journal of Pesticide Science, 2020, 22(3): 556-560. DOI: 10.16801/j.issn.1008-7303.2020.0042

    氟噻唑吡乙酮对马铃薯晚疫病最低有效防控剂量的研究

    Minimum effective dosage of oxathiapiprolin for the control of potato late blight

    • 摘要: 由真菌致病疫霉Phytophthora infestans (Mont.) de Bary引起的晚疫病是马铃薯的毁灭性病害。为使新型优异杀菌剂10%氟噻唑吡乙酮可分散油悬浮剂发挥更好的作用,于2018—2019年开展了该药剂防治马铃薯晚疫病的最低有效防控剂量 (防治效果等于大于80%对应的施药剂量) 田间试验。结果表明:10%氟噻唑吡乙酮可分散油悬浮剂按有效成分9.75~14.6 g/hm2处理,于第二次施药后14 d防治效果达80%以上,此剂量即为最低有效防控剂量,比农药登记推荐低剂量少用药50.0%~25.0%。结果可为农药减施和精准施药提供依据。

       

      Abstract: Potato late blight caused by the fungus of Phytophthora infestans ( Mont.) de Bary was a worldwide destructive disease in crop of potato (Solanum tuberosum L.). In order to make a better use of 10% oxathiapiprolin OD, in 2018-2019, field experiments were conducted to determine the minimum effective control dosage (the dosage whose control effect equated to or was higher than 80%) for the control of potato late blight. The results indicated that the control effect by the treatment dosage of 9.75-14.6 a.i.g/hm2 was more than 8.0% at the 14th days after second spray. This dosage was the minimum effective control value, which was 50.0%-25.0% lower than that recommended by pesticide registration. Its work could provide basis for the reduction and accurate application of the pesticide.

       

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