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Herbicidal control of bridal creeper (Asparagus asparagoides) in an ecologically sensitive environment
BRB

Jusaitis, Manfred

2018
Asparagus asparagoides (bridal creeper) is a highly invasive noxious environmental weed in southern Australia. It poses a severe threat to biodiversity and conservation in temperate natural ecosystems. Pterostylis arenicola, a threatened terrestrial orchid endemic to South Australia, is directly imperilled by this weed in most of its remnant populations. The coincident growth phenologies of orchid and weed make for an ecologically sensitive environment when considering methods of weed control or eradication. To minimise impact on the orchid and its ecosystem, this paper examines the efficacy of herbicide application for A. asparagoides control using the weed wiping technique, comparing it to the conventional spray application method. The most prolonged control of A. asparagoides was achieved after a single wipe-application of 1.5 g a.i. (active ingredient) L 1 metsulfuron methyl, either alone or in combination with 120 g a.i.L 1 glyphosate, both treatments giving significantly better weed control five years after treatment than comparable spray applications. An investigation of the effect of glyphosate on cultures of the mycorrhizal fungus isolated from P. arenicola indicated a significant decline in mycelial growth with increasing herbicide concentration over the range 0.5–3.0 kg a.i. ha 1. These results provide further incentive for the use of ecologically sensitive herbicide application techniques, such as weed wiping, in areas of high conservation concern.
Pacific Adaptation to Climate Change (PACC) Project 3rd Multipartite Review Meeting 2012; UNDP, SPREP, AusAID, Cook Islands, Federated States of Micronesia (FSM), Republic of the Marshall Islands (RMI), Nauru, Niue, Fiji, Palau, Papua New Guinea (PNG), Samoa, Solomon Islands, Tonga, Tokelau, Tuvalu, Vanuatu, Gender Assessment, Mid Term Review
Climate Change Resilience
Available Online

PACC

2012
PACC reports
Pacific Adaptation to Climate Change (PACC) Project 1st Multipartite Review Meeting 2010 Presentations; UNDP, SPREP, SOPAC, Cook Islands, Fiji, Federated States of Micronesia, Nauru, Niue, Palau, Samoa, Solomon Islands, Tonga, Tuvalu, Vanuatu.
Climate Change Resilience
Available Online

PACC

2010
Technical report
Pacific Adaptation to Climate Change (PACC) Project 2nd Multipartite Review Meeting 2011; SPREP, UNDP, AusAID, GIZ, PSE, IUCN, Cook Islands, Federated States of Micronesia (FSM), Fiji, Republic of the Marshall Islands (RMI), Nauru, Niue, Palau, Papua New Guinea (PNG), Solomon Islands, Samoa, Tonga, Tokelau, Tuvalu, Vanuatu, NIWA, Prof Robert Mendelsohn
Climate Change Resilience
Available Online

PACC

2011
Reports from the PACC project
Pacific Adapation to Climate Change (PACC) : report of in-country consultations - Cook Islands, Fiji, Federated States of Micronesia, Marshall Islands, Nauru, Niue, Palau, Papua New Guinea, Samoa, Solomons, Tonga, Tuvalu, Vanuatu
Climate Change Resilience, Island and Ocean Ecosystems
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PACC

2009

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