Journal article
Towards eradication of Phytophthora cinnamomi using a fallow approach in a Mediterranean climate
Forests, Vol.11(10), Article 1101
2020
Abstract
While eradication from haul roads was achieved, more work is required to eradicate P. cinnamomi from stockpiles and bunds. We can now implement different management strategies to the construction of bunds and stockpiles to facilitate eradication. Infestation by Phytophthora cinnamomi results in large financial and management constraints to environmental managers. This pathogen was considered impossible to eradicate until recent success with treatments including host removal, herbicide and fungicide application, soil fumigation and physical root barriers. We investigated the most benign of these treatments; keeping the area devoid of living host material. In a Western Australian mine site within a Mediterranean climate, haul roads, stockpiles and roadside bunds had P. cinnamomi colonised Pinus stem plugs buried at multiple depths. Over time, we examined the effects of soil moisture and temperature in different soil conditions and types to compare the recovery of the pathogen. Results: Within 12 months, the pathogen could not be recovered from the haul roads. In the stockpiles, depth produced significantly different results. In 3 of the 4 sites, the pathogen was not recovered at 10 cm after 20 months. By 12 months, at 50 cm, there was an 80% reduction in recovery, but only one stockpile had no recovery from 50 cm, which occurred by 36 months. Bunds were up to 1.75 m high and had variable results for plugs buried at 30 cm, influenced by height, the types of soils and shading. One of the smallest bunds was the only bund where the pathogen was not recoverable (by 22 months). This study provides strong support for using a fallow period to reduce or eliminate P. cinnamomi inoculum.
Details
- Title
- Towards eradication of Phytophthora cinnamomi using a fallow approach in a Mediterranean climate
- Authors/Creators
- W.A. Dunstan (Author/Creator)K. Howard (Author/Creator)A. Grigg (Author/Creator)C. Shaw (Author/Creator)T.I. Burgess (Author/Creator)G.E.St.J. Hardy (Author/Creator)
- Publication Details
- Forests, Vol.11(10), Article 1101
- Publisher
- MDPI
- Identifiers
- 991005544058307891
- Copyright
- © 2020 by the authors
- Murdoch Affiliation
- Centre for Phytophthora Science and Management; Harry Butler Institute
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.97 Plant Pathology
- 3.97.1439 Phytophthora Management
- Web Of Science research areas
- Forestry
- ESI research areas
- Plant & Animal Science