Current status and future prospects for integrated management of olive diseases in the Mediterranean basin
Verticillium wilt has a significant negative impact on olive cultivation all over the world. The situation has become more complex by the appearance of a defoliating strain of Verticillium dahliae in the USA and recently in the Mediterranean region. Current screening of olive germplasm for selecting...
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| Published in: | Phytopathologia mediterranea Vol. 48; no. 2; p. 343 |
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| Main Authors: | , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
01-08-2009
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | Verticillium wilt has a significant negative impact on olive cultivation all over the world. The situation has become more complex by the appearance of a defoliating strain of Verticillium dahliae in the USA and recently in the Mediterranean region. Current screening of olive germplasm for selecting resistant cultivars or rootstocks appears to be promising. Soil solarization or chamber solarization has been suggested; available fungicides are unable to control the pathogen. Spilocaea oleagina is effectively controlled by copper compounds, while strobilurin-based fungicides could also be efficient. Trials with copper oxychlorides in Italy indicated that four treatments could control Pseudocercospora cladosporioides. Clitocybe olearia and Armillaria mellea are causing root rot and wood decay in old olive orchards, but Fomitiporia mediterranea is an emerging threat. Severity of olive knot disease is directly related to susceptibility to frost, hailstorm and harvesting injuries. Phytoplasmas are ubiquitous, but a clear correlation between a given syndrome and the presence of one or more phytoplasmas did not emerge. Olive trees host up to 13 different viruses without significant impact so far. Molecular hybridization tests on dsRNA-positive samples in Apulia, revealed the presence of three nepoviruses, Arabis mosaic virus, Cherry leaf roll virus and Strawberry latent ring spot virus, plus Olive leaf yellowing- associated virus and Olive latent virus-1. Aspects related to integrated management of the diseases and problems related to dispersal of pathogens by exporting olive plant material in southern hemisphere countries will be discussed. |
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| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 content type line 23 ObjectType-Feature-1 |
| ISSN: | 0031-9465 |