Parthenium hysterophorus is an alien invasive weed infesting grasslands in many countries around the world, including Australia. Previous studies have identified several native and introduced fodder species that can suppress biomass production of parthenium weed. In the present study, a total of 11 fodder species were tested for their ability to suppress growth of parthenium weed, of which, seven were sown at Injune and Mungallala in Queensland, Australia, with some species tested at both locations. At the Injune site, four introduced pasture species, i.e. Digitaria milanjiana, Clitoria ternatea, Cenchrus ciliaris and Chamaecrista rotundifolia significantly reduced shoot dry biomass of parthenium weed by 60 to 80%, while two native species, i.e. Bothriochloa macra and Eragrostis leptostachya had no significant effect. Cenchrus ciliaris and C. ternatea produced large amounts of dry fodder biomass, i.e. 404 and 360 g m(-2), respectively. At the Mungallala site, three introduced species, i.e. D. milanjiana, Chloris gayana and C. rotundifolia and one native species, i.e. Dichanthium sericeum significantly reduced dry biomass of parthenium weed by >80%, producing sizeable fodder biomass (260 to 400 g m(-2)). The findings support the view that certain introduced and native pasture plant species can suppress the growth of parthenium weed at two contrasting locations and therefore show promise as potential tool for improved management of parthenium weed.

中文翻译：

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在澳大利亚草原上用有益植物抑制帕特尼姆杂草

Parthenium hysterophorus 是一种外来入侵杂草，在包括澳大利亚在内的世界上许多国家的草原上肆虐。以前的研究已经确定了几种本地和引入的饲料物种，它们可以抑制白蓼杂草的生物量产生。在本研究中，总共测试了 11 种饲料物种抑制百合草生长的能力，其中 7 种在澳大利亚昆士兰的 Injune 和 Mungallala 播种，一些物种在这两个地点进行了测试。在 Injune 场地，四种引入的牧草物种，即 Digitaria milanjiana、Clitoria ternatea、Cenchrus ciliaris 和 Chamaecrista rotundifolia 显着降低了百合草的地上部干生物量 60% 至 80%，而两种本地物种，即 Bothriochloa macra 和 Eragrostis no leptostachya影响。Cenchrus ciliaris 和 C. ternatea 生产了大量的干饲料生物量，分别为 404 和 360 gm(-2)。在 Mungallala 场地，三种引入的物种，即 D. milanjiana、Chloris gayana 和 C. rotundifolia 和一种本地物种，即 Dichanthium sericeum 显着降低了百合草的干生物量 >80%，产生了大量的饲料生物量（260 至 400 -2))。研究结果支持这样的观点，即某些引进的和本地的牧场植物物种可以抑制两个不同位置的白蒿杂草的生长，因此有望成为改善白蒿杂草管理的潜在工具。Dichanthium sericeum 显着降低了白蓼杂草的干生物量 > 80%，产生了大量的饲料生物量（260 至 400 gm(-2)）。研究结果支持这样的观点，即某些引进的和本地的牧场植物物种可以抑制两个不同位置的白蒿杂草的生长，因此有望成为改善白蒿杂草管理的潜在工具。Dichanthium sericeum 显着降低了白蓼杂草的干生物量 > 80%，产生了大量的饲料生物量（260 至 400 gm(-2)）。研究结果支持这样的观点，即某些引进的和本地的牧场植物物种可以抑制两个不同位置的白蒿杂草的生长，因此有望成为改善白蒿杂草管理的潜在工具。