Comparative Efficacy of Combi Fungicides for Management of Leaf Rust (Puccinia triticina Eriks.) in Wheat

Abstract

Wheat is attacked by a large number of pathogenic fungus, most destructive being rusts. Among three different rusts, leaf rust caused by Puccinia triticina Eriks is one of the devastating disease causing severe yield losses. The present investigation was conducted to gather the information of different combination fungicides in managing the leaf rust of wheat during rabi season of 2022-23. Nine different combi- fungicides were evaluated in completely randomized design and replicated thrice. The efficiency of different combi- fungicides for leaf rust management were analyzed by calculating disease severity and Area Under Disease Progress Curve (AUDPC). The evaluated data indicates that all combination fungicides were effective in controlling the leaf rust of wheat with respect to control. The combi fungicide Tebuconazole 50%+Trifloxystrobin 25% WG was found to be the most effective in terms of reducing the level of leaf rust and increasing grain yield exhibiting disease severity of 3.34%, percent disease control of 94.93, AUPDC of 49.16 with a grain yield of 47.65q/ha during rabi season of 2022-23. Therefore, the current findings demonstrate that combi- fungicides may play a significant role in effectively managing leaf rust of wheat.