Soil health management is a precursor to sustainable control of Phytophthora in macadamia

Akinsanmi, Olufemi A. and Drenth, A. (2016) Soil health management is a precursor to sustainable control of Phytophthora in macadamia. Acta Horticulturae, 1109 203-208. doi:10.17660/ActaHortic.2016.1109.33

Author Akinsanmi, Olufemi A.
Drenth, A.
Title Soil health management is a precursor to sustainable control of Phytophthora in macadamia
Journal name Acta Horticulturae   Check publisher's open access policy
ISSN 0567-7572
ISBN 9789462611030
Publication date 2016-03-20
Year available 2016
Sub-type Article (original research)
DOI 10.17660/ActaHortic.2016.1109.33
Open Access Status Not Open Access
Volume 1109
Start page 203
End page 208
Total pages 6
Place of publication Leuven, Belgium
Publisher International Society for Horticultural Science
Language eng
Formatted abstract
Different commercial cultivars of Macadamia integrifolia were examined for their relative resistance to Phytophthora cinnamomi in different soil conditions at the seedling stage in the glasshouse and grafted trees under field conditions. Results showed differences in susceptibility to P. cinnamomi exist among macadamia cultivars at both the seedling and tree growth stages. Significant variations were observed in the above-ground parameters (seedling, height and vigour, stem diameter and leaf area). Disease severity in the below-ground parameters (root weight and root volume) was influenced by the level of P. cinnamomi in the soils. Under field conditions, severity of trunk canker and tree dieback was significantly higher in the untreated control trees than trees that were treated once with metalaxyl and potassium phosphonate before planting in the Phytophthora-infested soil. At 4 years after planting, tree height was 40-60% lower in the untreated control trees compared to the trees treated at planting. Possible influence of soil nutrition and effect of rootstock × scion interaction on performance of the scions in soils infested with P. cinnamomi is discussed.
Keyword Hypoxia
Tree nut
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Queensland Alliance for Agriculture and Food Innovation
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Created: Mon, 04 Apr 2016, 21:52:45 EST by Dr Olufemi Akinsanmi on behalf of Centre for Plant Science