| 刊名 | Plant Diseases and Pests |
| 作者 | Yuzhen CHEN， Gui GAO， Wu YANG， Jun ZHOU， Yingjie JIANG |
| 作者单位 | Syngenta (Shanghai) Crop Protection Technology Co.,Ltd.； Qianxinan Prefecture Branch of Guizhou Tobacco Company |
| DOI | 10.19579/j.cnki.plant-d.p.2025.02-04.002 |
| 年份 | 2025 |
| 刊期 | 4 |
| 页码 | 8-12 |
| 关键词 | Tobacco seedlings, Seedbed, Disinfection, Fungicide |
| 摘要 | [Objectives] To screen effective agents for the management of root rot in tobacco floating seedlings. [Methods] A total of eight treatments were implemented in a large-scale field trial, which included three replications. Each treatment was administered at the recommended dosages. [Results] The application of Metalaxyl-M·Fludioxonil+amino acids demonstrated a control efficacy of 93.65% against root rot in tobacco floating seedlings. In comparison, the application of Metalaxyl-M·Fludioxonil alone exhibited a control efficacy of 88.42%. The most effective treatment for promoting root growth in tobacco seedlings was Metalaxyl-M·Fludioxonil+amino acids, which resulted in a 54.65% increase in root growth compared to the blank control. This was followed by the application of Metalaxyl-M·Fludioxonil alone, which yielded a 39.53% increase in root growth relative to the blank control. [Conclusions] The application of Metalaxyl-M·Fludioxonil+amino acids is recommended for use in the seedling pools of tobacco seedling cultivation. Specifically, it is advised to incorporate 1 mL of Metalaxyl-M·Fludioxonil and 2 mL of amino acids into each seedling tray prior to their introduction into the seedling pool. This treatment has demonstrated significant efficacy in preventing and controlling root rot in tobacco floating seedlings, while also promoting the health of the root system and ensuring the quality of transplanted tobacco seedlings. |
