Abstract:

The aim of this study was to clarify the field efficacy of 22.4% fluazole aniline seed treatment suspension in the control of rice bakanae disease, rice seedling blight and rice sheath blight disease, and to determine the optimal dosage and safety. The dosages of 22.4% fluazole aniline seed treatment suspension agent were 8, 10 and 12 mL·kg^-1, and the dosage of control agent 3.5% fludioxin nail cream suspension was 4 mL·kg^-1, respectively. The results showed that the field control efficacy of 22.4% fluazole aniline seed treatment suspension on rice bakanae disease was 80.55%-92.21%, 82.25%-90.11% against rice seedling blight, 78.70%-90.77% against rice sheath blight disease, and yield increase rate of 41.25%-55.12%, which were significantly better than those of the control agent 3.5% flurodiin nail cream suspension, and had a significant growth promotion effect on rice seedling emergence and growth. In summary, 22.4% fluazole aniline seed treatment suspension seed dressing has a good effect on the control of rice diseases, and the recommended dosage of preparation is 8-12 mL·kg^-1 and the dosage of active ingredient is 1.79-2.69 mL·kg^-1.

Key words: fluazole aniline, rice, rice bakanae disease, rice seedling blight, rice sheath blight disease