Fusarium wilt of banana, caused by Fusarium oxysporum f.sp. cubense, is a serious threat to banana production, with no effective treatment. Mulches and oils from Eucalyptus have been shown to inhibit the growth of F. oxysporum, and reduce the severity of Fusarium wilt. Eucalyptus cloeziana leaves contain many compounds commonly found in Eucalyptus as well as a very high concentration of the uncommon compound tasmanone. We applied E. cloeziana mulch, fresh or partially steam distilled, or no mulch as a control, to potted soil, inoculated the soil with F. oxysporum f.sp. cubense and grew susceptible banana plants to test the capacity of the mulch to reduce the severity of Fusarium wilt of banana. Disease severity, analysed by internal corm discoloration, was reduced from 90% in the control to 37% in the treatment with steam distilled mulch.In another experiment, comparison of steam distilled with fresh mulch showed no difference between the two, with a disease severity of 13%, compared to 49% in the control. Mulch (fresh or steam distilled) had no detrimental effects on plants grown without F. oxysporum inoculation. We propose that disease suppression was likely due to tasmanone, as it was the primary oil constituent of the mulches.

香蕉枯萎病，由香蕉枯萎病菌f.sp.引起。没有任何有效的处理方法，立方米对香蕉的生产构成了严重威胁。桉树的覆盖物和油已被证明可以抑制尖孢镰刀菌的生长，并降低镰刀菌枯萎的严重性。Cloeziana桉树叶子包含许多在Eucalyptus中常见的化合物，以及非常高浓度的不常见的塔斯曼酮。我们采用E. cloeziana覆盖，新鲜的或部分蒸汽蒸馏，或不覆盖作为对照，以盆栽土壤，接种土壤尖孢镰孢病菌 立方体并种植了易感的香蕉植物，以测试覆盖物的能力，以降低香蕉枯萎病的严重程度。通过内部球茎变色分析，疾病严重程度从对照组的90％降低为水蒸气蒸煮覆盖物处理的37％。在另一个实验中，比较水蒸气蒸煮与新鲜覆盖物处理后发现两者之间没有差异，病情严重程度13％，而对照组为49％。覆盖物（新鲜或水蒸气蒸馏）对未接种过尖孢镰刀菌的植物没有有害影响。我们认为疾病抑制很可能归因于塔斯曼酮，因为它是覆盖物的主要油脂成分。