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油橄榄炭疽病在陕西汉中地区普遍发生。该病危害油橄榄各部器官,但只有在果实和叶片上呈现典型症状。发病严重时引起落果、落叶、枝梢枯死,树势生长衰弱。病果含油率降低30.4—42.3％。油橄榄炭疽病病原菌Colletotrichum gloeosporioides Penz.[异名Glocosporium olivarum Alm.]在陕西汉中地区尚未发现有性时代。初次侵染源为病枯枝、病叶和病落果所产生的新的分生孢子。该病每年4月下旬在幼嫩叶尖端出现新病斑,5月中旬花发病,6月中下旬果实开始发病,11月上旬达发病高峰。高湿条件下有利于病害发生发展。室内外接种均能发病,潜育期2—7天。抗病性差异可能与不同品种果实表皮细胞层次及缀密度有关,爱桑(Elbasan)、米札(Mixaj)较抗病。冬春剪除油橄榄病枯枝,清除病叶和病落果,结合使用1％波尔多液和50％退菌特800倍液防治油橄榄炭疽病效果显著。
Olive anthracnose occurs in Hanzhong area of Shaanxi Province. The disease endanger the organs of olive, but only in the typical symptoms of fruit and leaves. Serious onset caused by falling fruit, leaves, dead shoots, tree growth weak. Fruit oil content decreased by 30.4-42.3%. Olive anthrax pathogen Colletotrichum gloeosporioides Penz. [Synonyms Glocosporium olivarum Alm.] Hanzhong in Shaanxi Province has not yet found a sexual era. The primary source of infection is the new conidia produced by diseased branches, diseased leaves, and diseased fruit. The disease in late April each year in the tip of young leaves appear new lesions, flowers in mid-May onset, early and late June onset of fruit onset in early November reached the peak. High humidity conditions are conducive to disease development. Indoor and outdoor vaccination can disease, latent period of 2-7 days. The differences in disease resistance may be related to the epidermal cell layers and the densities of different varieties of fruits. Elbasan and Mixaj are more resistant. Winter and spring cut off olive tree dead branches, diseased leaves and diseased diseased leaves, combined with 1% Bordeaux mixture and 50% detrestation special 800 times prevention and treatment of olive hill anthracnose effect is remarkable.