Shi Boyang, Osunkoya Olusegun O, Chadha Aakansha, Florentine Singarayer K, Dhileepan Kunjithapatham
Biosecurity Queensland, Queensland Department of Agriculture and Fisheries, Boggo Road, Dutton Park, QLD 4102, Australia.
Future Regions Research Centre, School of Science, Psychology and Sport, Federation University Australia, Mount Helen, VIC 3350, Australia.
Plants (Basel). 2021 Sep 7;10(9):1851. doi: 10.3390/plants10091851.
Navua sedge ( (Ridley) Mattf. & Kukenth) is an invasive perennial sedge, native to tropical Africa, which is threatening many natural ecosystems and agroecosystems, especially in northern Queensland, Australia. Crop and pasture production have been impacted by Navua sedge and it is also directly causing reductions in dairy and beef production in affected regions. This review documents the biology, ecology and potential management options to minimise the spread and impact of Navua sedge. The weed reproduces both sexually (seeds) and vegetatively (via underground rhizomes). Its tiny seeds can be spread easily via wind, water, vehicles, farm machinery and animals, whilst the rhizomes assist with establishment of dense stands. The CLIMEX model (which uses distribution and climate data in native and novel ranges) indicates that in Australia, Navua sedge has the potential to spread further within Queensland and into the Northern Territory, New South Wales and Victoria. Several management strategies, including mechanical, chemical and agronomic methods, and their integration will have to be used to minimise agricultural production losses caused by Navua sedge, but most of these methods are currently either ineffective or uneconomical when used alone. Other management approaches, including biological control and mycoherbicides, are currently being explored. We conclude that a better understanding of the interaction of its physiological processes, ecological patterns and genetic diversity across a range of conditions found in the invaded and native habitats will help to contribute to and provide more effective integrated management approaches for Navua sedge.
纳武阿莎草（(Ridley) Mattf. & Kukenth）是一种入侵性多年生莎草，原产于热带非洲，正威胁着许多自然生态系统和农业生态系统，尤其是在澳大利亚昆士兰州北部。农作物和牧场生产受到纳武阿莎草的影响，它还直接导致受影响地区的乳制品和牛肉产量下降。本综述记录了纳武阿莎草的生物学、生态学以及为尽量减少其传播和影响的潜在管理方案。这种杂草通过有性繁殖（种子）和无性繁殖（通过地下根茎）。其微小的种子可通过风、水、车辆、农业机械和动物轻易传播，而根茎有助于形成密集的群落。CLIMEX模型（利用原生和新分布区域的分布及气候数据）表明，在澳大利亚，纳武阿莎草有可能在昆士兰州进一步蔓延，并扩散至北领地、新南威尔士州和维多利亚州。必须采用多种管理策略，包括机械、化学和农艺方法及其综合运用，以尽量减少纳武阿莎草造成的农业生产损失，但目前这些方法大多单独使用时要么无效要么不经济。目前正在探索其他管理方法，包括生物防治和真菌除草剂。我们得出结论，更好地了解其生理过程、生态模式和遗传多样性在入侵和原生栖息地一系列条件下的相互作用，将有助于为纳武阿莎草制定并提供更有效的综合管理方法。
