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Bushkiller (Cayratia japonica) Growth in Interspecific and Intraspecific Competition

Published online by Cambridge University Press:  20 January 2017

Amanda M. West ,
Robert J. Richardson ,
Consuelo Arellano  and
Michael G. Burton
Amanda M. West
Affiliation:
North Carolina State University, Raleigh, NC 27695
Robert J. Richardson*
Affiliation:
North Carolina State University, Raleigh, NC 27695
Consuelo Arellano
Affiliation:
North Carolina State University, Raleigh, NC 27695
Michael G. Burton
Affiliation:
Missouri State University, Springfield, MO 65897
*
Corresponding author's E-mail: rob_richardson@ncsu.edu
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Abstract

Bushkiller was evaluated under inter- and intraspecific competition. In experiment 1, bushkiller, trumpetcreeper, and wild grape were greenhouse-grown alone and in two or three species mixtures in pots. Of the three species, bushkiller grew the tallest and had the greatest final biomass when grown alone. When all three species were grown together, bushkiller grew over twice the height of trumpetcreeper, over three times the height of wild grape, and over four times the biomass of either competing species. Plots of height over time showed that competition did not affect bushkiller or wild grape growth rate, but trumpetcreeper growth was reduced when grown with bushkiller. In experiment 2, bushkiller was grown in cultures of one, two, and three plants per pot to determine intraspecific competition effects on growth. Final height of bushkiller was not affected by intraspecific competition; however, bushkiller biomass decreased with increasing competition.

Keywords

Bushkiller, Cayratia japonica (Thunb.) GagnepAdditive designexotic invasive speciesperennial vinetarget–neighbor designweed competition
Type
Weed Biology and Ecology
Information
Weed Science , Volume 58 , Issue 3 , September 2010 , pp. 195 - 198
Copyright
Copyright © Weed Science Society of America 

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