Verification of Comet Plus 475 G/L EC Fungicide Against Wheat Stripe Rust (Puccinia striiformis f.sp. tritici) Disease on Bread Wheat in Bale, Southeastern Ethiopia

T. Mideksa, Zerihun Eshetu
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Abstract

Wheat (Triticum aestivum L.) is the most widely cultivated crops in Ethiopia. However, wheat production is very low due to many factors. Of these, disease like stripe rust of wheat is the main constrained biotic factor and cause great yield losses. The field experiment was conducted at three hot-spot locations of wheat rust diseases in the zone namely; Sinana, Selka, and Agarfa during the 2019 cropping season to evaluate the effectiveness of newly introduced fungicide for the management of yellow rust disease of wheat. Variety Kubsa, which is susceptible to the three wheat rusts were used. The trial was laid out at three locations with non-replicated plots. Two systemic fungicides (Comet plus and Rex®Duo) and untreated plot (control) were used as a treatment. A significant difference (P<0.05) was observed between fungicide treatments and unsprayed plots on yellow rust severity, grain yield, thousand kernel weight, and hectoliter. Based on field observation and analyzed data results revealed that the newly introduced fungicide found to be effective in controlling stripe rust of wheat. Thus, Comet plus 475 G/L EC is recommended as an alternative fungicide for the management of stripe rust of wheat in wheat-growing areas of the country.
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Comet Plus 475 G/L EC杀菌剂对小麦条锈病的防治效果验证埃塞俄比亚东南部贝尔面包小麦的小麦黑穗病
小麦(Triticum aestivum L.)是埃塞俄比亚种植最广泛的作物。然而,由于多种因素的影响,小麦产量非常低。其中,小麦条锈病等病害是制约小麦产量的主要生物因素,造成了较大的产量损失。田间试验在该地区三个小麦锈病高发区分别进行;在2019年种植季期间,对Sinana、Selka和Agarfa进行试验,以评估新引进的杀菌剂对小麦黄锈病管理的有效性。选用对三种锈病敏感的小麦品种库布沙。试验在三个地点进行,没有重复的情节。两种系统杀菌剂(Comet plus和Rex®Duo)和未经处理的地块(对照)作为处理。在黄锈病严重程度、产量、千粒重、百升等指标上,杀菌剂处理与未喷施区差异显著(P<0.05)。通过田间观察和资料分析,发现新引进的杀菌剂对小麦条锈病有较好的防治效果。因此,Comet加475 G/L EC被推荐作为该国小麦种植区小麦条锈病管理的替代杀菌剂。
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