College of Plant Protection, Jilin Agricultural University, Changchun, 130118, China.
State-Local Joint Engineering Research Center of Ginseng Breeding and Application, Changchun, 130118, China.
Plant Dis. 2021 Jul;105(7):1926-1935. doi: 10.1094/PDIS-07-20-1593-RE. Epub 2021 Aug 2.
The biocontrol efficacy of FS6 against seedling diseases and gray mold of ginseng (), as well as application techniques, were evaluated in a series of field trials. FS6 fermentation broth showed a strong antagonistic effect against the ginseng fungal pathogens, and the inhibition rates on mycelial growth and spore germination were 84 to 88% and 71 to 72%, respectively. Field evaluation showed that combination of seed and soil treatments exhibited better protection than that of individual treatment alone. FS6 wettable powder soil treatment in combination with thiamethoxam plus metalaxyl-M plus fludioxonil for seed coating performed the best, with >83% overall control efficacy for seedling diseases. FS6 had a long-acting effect of >78% control efficacy on ginseng gray mold at 30 days after the last application, almost 2.5- and 2-fold better than that of . B7900 wettable powder and cyprodinil, respectively. In addition, FS6 reduced the diversity and relative abundance of fungi and affected the fungi and bacterial composition in the rhizosphere soil of ginseng. Therefore, FS6 can be used to effectively control seedling diseases and gray mold in ginseng.
FS6 对人参种苗病害和灰霉病的生防效果及其应用技术在一系列田间试验中进行了评价。FS6 发酵液对人参病原菌具有较强的拮抗作用，对菌丝生长和孢子萌发的抑制率分别为 84%88%和 71%72%。田间评价表明，种子和土壤处理的联合处理比单独处理具有更好的保护效果。FS6 可湿性粉剂土壤处理与噻虫嗪+精甲霜灵+氟啶胺复配种子包衣处理效果最好，对种苗病害的总体防治效果超过 83%。FS6 在末次施药后 30 天对人参灰霉病的长效防治效果超过 78%，分别比 B7900 可湿性粉剂和吡唑醚菌酯高出约 2.5 倍和 2 倍。此外，FS6 降低了人参根际土壤中真菌的多样性和相对丰度，并影响了真菌和细菌的组成。因此，FS6 可有效防治人参种苗病害和灰霉病。
