Control Effects of Six Fungicides against the Wheat Leaf Rust

[Aims] The study aims to screen out effective fungicides which had better inhibition effects on pathogens Puccinia recondita f.sp. tritici. [Methods] 6 Kinds of fungicides were tested by spraying them at wheat jointing stage and heading stage, investigated on May 10 and May 20. [Results] The investigation demonstrated that trifloxstrobintebuconazole 75% WG, tebuconazole 43% SC and diniconazole 12.5% WP displayed better control, and the decrement of disease index were all above 99.00% after 20 days; the decrement of disease index were 98.62, 96.11 and 91.05%after 30 days, respectively. Their wheat output increased by 20.43, 19.21 and 15.75%, better than all other fungicides.The prevention effect of trifloxstrobin-tebuconazole 75% WG was the most persistent. [Conclusions] Three fungicides are worth to be applied in production.