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Susceptibility of Corymbia species and hybrids to arthropod herbivory in Australian subtropical hardwood plantations

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Nahrung, H.F., Waugh, R., Lee, D.J. and Lawson, S. A. (2010) Susceptibility of Corymbia species and hybrids to arthropod herbivory in Australian subtropical hardwood plantations. Southern Forests-a Journal of Forest Science, 72 (3-4). pp. 147-152. ISSN 2070-2620

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Article Link: http://dx.doi.org/10.2989/20702620.2010.547247


Corymbia hybrids are becoming significant plantation varieties in subtropical and tropical Australian plantation forestry. Although primarily developed for disease resistance and amenability to clonal propagation, they have also proven to have good growth rates and site plasticity. Here we examined the susceptibility of pure Corymbia species and hybrids to pest attack. Three trial sites containing C. citriodora subsp. variegata, C. torelliana, and the hybrids C. torelliana x C. citriodora subsp. variegata, C. torelliana x C. citriodora subsp. citriodora and C. torelliana x C. henryi were assessed for pest identity, incidence and severity. Pests caused about three-quarters of the visible crown damage to trees in these trials. At the site that had the most arthropod damage, hybrid trees had higher damage scores and higher growth scores (height, diameter at breast height over bark, and volume) than pure species. Site was more important than taxon in explaining damage scores, and taxa performed differently for most traits between sites. Tree growth was negatively correlated with general crown damage, while arthropod damage alone showed no significant relationship with growth. Our results highlight the importance of establishing taxa trials across a range of sites when selecting for pest resistance.

Item Type:Article
Business groups:Horticulture and Forestry Science
Keywords:Corymbia citriodora Corymbia torelliana Corymbia variegata Corymbia henryi eucalypt hardwood heritability pest queensland resistance eucalyptus plants costs taxa Forestry
Subjects:Plant pests and diseases
Plant pests and diseases > Plant pathology
Forestry > Research. Experimentation
Live Archive:17 Jan 2023 01:38
Last Modified:17 Jan 2023 01:38

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