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Article

Managing an Invasive Weed Species, Parthenium hysterophorus, with Suppressive Plant Species in Australian Grasslands

1
School of Agriculture and Food Sciences, The University of Queensland, Gatton, QLD 4343, Australia
2
INIA La Estanzuela, Ruta 50, Colonia 70000, Uruguay
3
Weed Research Unit, New South Wales Department of Primary Industries, Wagga Wagga, NSW 2650, Australia
4
School of Life and Environmental Sciences, The University of Sydney, Camden, NSW 2570, Australia
5
IVM Group Pty. Ltd., Varsity Lakes, QLD 4227, Australia
6
Biosecurity Queensland, Department of Agriculture and Fisheries, Ecosciences Precinct, Brisbane, QLD 4102, Australia
*
Author to whom correspondence should be addressed.
Plants 2020, 9(11), 1587; https://doi.org/10.3390/plants9111587
Received: 25 October 2020 / Revised: 12 November 2020 / Accepted: 13 November 2020 / Published: 16 November 2020
(This article belongs to the Special Issue Weed Management in Rangeland Environments)
Parthenium weed has been invading native and managed Australian grasslands for almost 40 years. This study quantified the potential of selected plant mixtures to suppress the growth of parthenium weed and followed their response to grazing and their impact upon plant community diversity. The first mixture consisted of predominantly introduced species including Rhodes grass, Bisset bluegrass, butterfly pea and green panic. This mixture produced biomass rapidly and showed tolerance to weed species other than parthenium weed. However, the mixture was unable to suppress the growth of parthenium weed. The second mixture of predominantly native pasture species (including forest bluegrass, Queensland bluegrass, Buffel grass and siratro) produced biomass relatively slowly, but eventually reached the same biomass production as the first mixture 12 weeks after planting. This mixture suppressed parthenium weed re-establishment by 78% compared to the control treatment. Its tolerance to the invasion of other weed species and the maintenance of forage species evenness was also superior. The total diversity was five times higher for the mixture communities as compared to the plant community in the control treatment. Therefore, using the suppressive pasture mixtures may provide an improved sustainable management approach for parthenium weed in grasslands. View Full-Text
Keywords: invasive alien species; parthenium weed; species diversity; pastures; weed management; suppressive plants invasive alien species; parthenium weed; species diversity; pastures; weed management; suppressive plants
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MDPI and ACS Style

Belgeri, A.; Bajwa, A.A.; Shabbir, A.; Navie, S.; Vivian-Smith, G.; Adkins, S. Managing an Invasive Weed Species, Parthenium hysterophorus, with Suppressive Plant Species in Australian Grasslands. Plants 2020, 9, 1587. https://doi.org/10.3390/plants9111587

AMA Style

Belgeri A, Bajwa AA, Shabbir A, Navie S, Vivian-Smith G, Adkins S. Managing an Invasive Weed Species, Parthenium hysterophorus, with Suppressive Plant Species in Australian Grasslands. Plants. 2020; 9(11):1587. https://doi.org/10.3390/plants9111587

Chicago/Turabian Style

Belgeri, Amalia, Ali A. Bajwa, Asad Shabbir, Sheldon Navie, Gabrielle Vivian-Smith, and Steve Adkins. 2020. "Managing an Invasive Weed Species, Parthenium hysterophorus, with Suppressive Plant Species in Australian Grasslands" Plants 9, no. 11: 1587. https://doi.org/10.3390/plants9111587

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