Olive leaf spot or peacock eye disease caused by Spilocaea oleagina is one of the most common diseases attacking olive trees all over the world. Control of the disease by application of copper fungicides is not always feasible and requires proper management practices. The use of plant extract is considered a safe alternative to the harmful effect of chemical fungicides. In this work, different concentrations (0.5, 1.0, 1.5, 2.0, 2.5, 5.0 and 10% w/v) of Ambrosia artimisiifolia aqueous leaf extract were tested for their efficacy against OLS spore germination. All concentrations proved to have an inhibitory effect on conidial germination under in vitro conditions. The concentrations 2.5 and 5% were the most effective with germination rates of 8.3 and 2.8%, respectively. The results of this work provided new possibilities to control the disease using A. artimisiifolia leaf extract.

由螺旋藻引起的橄榄叶斑或孔雀眼病是全世界攻击橄榄树的最常见疾病之一。通过施用铜杀真菌剂来控制疾病并非总是可行的，需要适当的管理措施。使用植物提取物被认为是化学杀真菌剂有害作用的安全替代品。在这项工作中，不同浓度（0.5、1.0、1.5、2.0、2.5、5.0和10％w / v）的青蒿测试水叶提取物对抗OLS孢子萌发的功效。在体外条件下，所有浓度均对分生孢子萌发具有抑制作用。浓度2.5和5％最有效，发芽率分别为8.3和2.8％。这项工作的结果为使用青蒿叶提取物控制该病提供了新的可能性。