Stem rust caused by Puccinia triticina Erikss is one of the most devastating fungal foliar diseases, and causes substantial yield losses to wheat crops cultivated under field conditions. This study aimed to evaluate the efficacy of plant extract-based foliar sprays for wheat with carnation, ginger and cinnamon on the severity of stem rust infection of three wheat cultivars cultivated under field conditions for two consecutive winter seasons of (2020/21 and 2021/22). In both seasons our data showed that all treatments were associated with some degree of disease suppression recorded as a range of 2.3–8.6% compared to 15.3–24.5% in untreated control treatment. The plant extract treatment was more effective than Amistar, a commercial fungicide. They recorded disease severity as: scores ranged between 2.3 and 3.2%; 3.0–4.5%, and 3.0–6% for wheat cvs. Giza 1, Misr 2, and Sids 14, in respective order. Meanwhile, scores of 4.1, 7.5, and 8.6% were recorded at fungicidal treatment. Spaying wheat plants with carnation extract showed the lowest disease prevalence followed by ginger and cinnamon extract, respectively. Increased in grain yield was associated with reduced disease severity. The present investigation demonstrated the efficacy using plant extracts against foliar diseases caused by Puccinia and it was suggested that they may be an alternative to traditional chemical treatment.

中文翻译：

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植物提取物在田间条件下抑制小麦锈病严重程度的有效性

由 Puccinia triticina Erikss 引起的茎锈病是最具破坏性的叶面真菌病害之一，对在田间条件下种植的小麦作物造成重大的产量损失。本研究旨在评估基于植物提取物的小麦叶面喷施康乃馨、生姜和肉桂对连续两个冬季（2020/21 和 2021/ 22)。在这两个季节，我们的数据显示，所有治疗都与一定程度的疾病抑制相关，记录范围为 2.3-8.6%，而未经治疗的对照治疗为 15.3-24.5%。植物提取物处理比商业杀菌剂 Amistar 更有效。他们记录的疾病严重程度为：分数在 2.3% 和 3.2% 之间；3.0–4.5%，小麦 cvs 为 3.0–6%。Giza 1、Misr 2 和 Sids 14，按各自的顺序排列。同时，杀菌处理的得分分别为 4.1%、7.5% 和 8.6%。用康乃馨提取物喷洒小麦的病害发生率最低，其次是生姜和肉桂提取物。谷物产量的增加与疾病严重程度的降低有关。目前的调查证明了使用植物提取物对由锈病引起的叶面病害的功效，并建议它们可能是传统化学处理的替代品。谷物产量的增加与疾病严重程度的降低有关。目前的调查证明了使用植物提取物对由锈病引起的叶面病害的功效，并建议它们可能是传统化学处理的替代品。谷物产量的增加与疾病严重程度的降低有关。目前的调查证明了使用植物提取物对由锈病引起的叶面病害的功效，并建议它们可能是传统化学处理的替代品。