SYP-4575防治油菜菌核病和马铃薯晚疫病田间药效

The Field Efficacy of SYP-4575 against Sclerotinia sclerotiorum and Phytophthora infestans

[目的]通过田间试验,明确SYP-4575防治油菜菌核病和马铃薯晚疫病田间药效。[结果]900 mg/L质量浓度下,SYP-4575对油菜菌核病防效为79.61%,对照药剂多菌灵防效为60.39%;600 mg/L质量浓度下,SYP-4575对油菜菌核病防效为59.22%,对照药剂菌核净防效为44.9%;400 mg/L质量浓度下对马铃薯晚疫病防效达70%以上。[结论]SYP-4575对油菜菌核病和马铃薯晚疫病有较好的田间防治效果。相同质量浓度下对油菜菌核病防效高于对照药剂多菌灵和菌核净;对马铃薯晚疫病防效相当于对照药剂氟吗啉,不及对照药剂氰霜唑和银法利。

[Aims] The paper aims to confirm the efficacy of SYP-4575 against Sclerotinia sclerotiorum and Phytophthora infestans in field. [Results] The results showed that the efficacy of SYP-4575 is 79.61% against S. sclerotiorum, and the standard fungicide of carbendazin was 60.93% at the same concentration of 900 mg/L. At the concentration of 600 mg/L, the efficacies of SYP-4575 and the standard fungicide of dimetachlone were 59.22 and 44.9% respectively against S. sclerotiorum, while for P. infestans, SYP-4575 displayed over 70% control at the concentration of 400 mg/L. [Conclusions] SYP-4575 has higher activtity against S. sclerotiorum and P. infestans in field. Its efficacy is higher than carbendazin and dimetachlone against S. sclerotiorum at the same concentration. It exhibits equal fungicidal activity to flumorph against P. infestans and lower activity than cayzofamid and infinite.