Login | Create Account (DAF staff only)

Effect of simulated herbivory on bellyache bush (Jatropha gossypiifolia L.) growth and implications for biological control

Kumaran, N., Lockett, C. and Dhileepan, K. (2018) Effect of simulated herbivory on bellyache bush (Jatropha gossypiifolia L.) growth and implications for biological control. Weed Biology and Management, 18 (4). pp. 151-159. ISSN 14446162 (ISSN)

Full text not currently attached. Access may be available via the Publisher's website or OpenAccess link.

Article Link(s): http://dx.doi.org/10.1111/wbm.12159

Publisher URL: https://onlinelibrary.wiley.com/doi/abs/10.1111/wbm.12159

Abstract

Understanding the ability of invasive plants to compensate for herbivory damage is crucial for their management, but this has been poorly studied in weed biological control. Bellyache bush (Jatropha gossypiifolia L.) is an invasive weed and a target for biological control in Australia. To understand the response of bellyache bush to herbivory, we simulated herbivory damage, under field conditions, at a site in north Queensland. Two size classes, that is, seedlings and mature plants were subjected to either defoliation, shoot damage or a combination of both, and the damage was inflicted once, twice or thrice at 6–7 weeks interval. All herbivory types significantly reduced growth and biomass when herbivory was inflicted twice or thrice, whereas the single application had limited impact. Shoot damage alone and defoliation + shoot damage had a greater negative impact than defoliation treatment on plant height, basal stem diameter, the number of leaves, root length and the number of shoot tips produced while increasing the number of dead shoot tips. Defoliation alone and defoliation + shoot damage had a greater negative impact on the number of flowers and fruit pods produced than shoot damage. The greater negative effects noticed when herbivory was inflicted twice or thrice suggest that multivoltine biological control agents that can inflict shoot damage and defoliation should be sought for the biological control of bellyache bush. © 2018 Weed Science Society of Japan

Item Type:Article
Business groups:Biosecurity Queensland
Keywords:defoliation demography growth rate invasive species weeds
Subjects:Science > Invasive Species > Plants > Biological control
Science > Invasive Species > Plants > Eradication and containment
Plant pests and diseases > Weeds, parasitic plants etc
Deposited On:05 Mar 2019 23:31
Last Modified:05 Mar 2019 23:31

Repository Staff Only: item control page