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Standardized Support to Measure Biomass and Fruit Production by the Invasive Climber (Asparagus asparagoides)

Published online by Cambridge University Press:  20 January 2017

Chris D. Stansbury ,
Kathryn L. Batchelor ,
Louise Morin ,
Tim L. Woodburn  and
John K. Scott
Chris D. Stansbury
Affiliation:
CRC for Australian Weed Management; CSIRO Entomology, Private Bag, P.O. Wembley, WA 6913, Australia
Kathryn L. Batchelor
Affiliation:
CRC for Australian Weed Management; CSIRO Entomology, Private Bag, P.O. Wembley, WA 6913, Australia
Louise Morin
Affiliation:
CSIRO Entomology, G.P.O. Box 1700, Canberra, ACT 2601, Australia
Tim L. Woodburn
Affiliation:
CSIRO Entomology, G.P.O. Box 1700, Canberra, ACT 2601, Australia
John K. Scott*
Affiliation:
CRC for Australian Weed Management; CSIRO Entomology, Private Bag, P.O. Wembley, WA 6913, Australia
*
Corresponding author's E-mail: [email protected]
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Abstract

The difficulty of monitoring growth parameters of climbing invasive plants subjected to different control options can be overcome by using standardized support structures (trellises). The utility of such support structures on aboveground biomass accumulation and fruit production was demonstrated using the invasive climber, bridal creeper in three invaded nature reserves near Perth in Western Australia. Mean above-ground plant biomass for plots provided with trellises ranged from 204 ± 38 g/m2 to 336 ± 31 g/m2, whereas it ranged from 66 ± 10 g/m2 to 118 ± 10 g/m2 in plots with no trellises. The mean number of fruits/m2 produced on shoots in plots provided with trellises ranged from 424 ± 159 to 3,787 ± 873 and was up to almost four orders of magnitude greater than the number of fruits produced on plants in plots with no trellis (ranging from 0 to 5.25 ± 7.9). The use of standardized trellises also showed that fruit volume and fruit seed number can vary significantly between sites. Standardized trellises have been installed at sites across Australia to assess the long-term impact of biological control agents introduced to manage bridal creeper.

Keywords

Bridal creeper, Asparagus asparagoides (L.) DruceBiological controlcreeperfruit productionhabitat suitabilityclimbing invasive plantvinetrellis
Type
Notes
Information
Weed Technology , Volume 21 , Issue 3 , September 2007 , pp. 820 - 824
Copyright
Copyright © Weed Science Society of America 

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Footnotes

Current address: Office of the Public Sector Standards Commissioner, Level 12 St Martin's Tower, 44 St. Georges Terrace, Perth, WA 6000, Australia.

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