Tutsan biocontrol

Hypericum androsaemum
Tutsan

Tutsan is a declared noxious weed which invades woodlands and pastures in Australia, causing adverse effects to both native flora and grazing livestock. One biocontrol agent has been released to for tutsan:

1. Tutsan rust *Melampsora hypericorum*

Release of tutsan rust is expected to reduce the spread and density of tutsan infestations. Tutsan rust is now established in many locations including in Victoria, where it aids in controlling tutsan populations. The biocontrol agent is yet to be released in NSW. Regular updates on field days, workshops, and research results are published on the Blog.

Tutsan infestation, [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/) © Landcare Research

**浆果金丝桃（Hypericum androsaemum，俗称Tutsan）**

图坦草（Tutsan）是澳大利亚官方认定的有害杂草，可入侵林地与牧场，对本土植物区系及放牧家畜均造成不利影响。目前已针对图坦草释放一种生物防治剂（biocontrol agent）：
1. 图坦草锈菌（*Melampsora hypericorum*）

图坦草锈菌的释放预计可抑制图坦草的扩散并降低其侵染种群密度。目前该锈菌已在包括维多利亚州在内的诸多区域成功定殖，可有效辅助管控图坦草种群；但该生物防治剂暂未在新南威尔士州（NSW）开展释放工作。有关田间活动、研讨会及研究进展的定期更新内容均发布于官方博客。

**图1 图坦草侵染场景**
图源：[CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/) © Landcare Research