Effect of Cultivar Resistance and Soil Management on Spatial–Temporal Development of Verticillium Wilt of Olive: A Long-Term Study
| Autor: | Francisco Javier López-Escudero, Eduardo Ostos, Themis J. Michailides, Rafael Porras, Juan Moral, Maria Teresa Garcia-Lopez, Antonio Trapero-Casas |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Plant Biology Plant Science lcsh:Plant culture Verticillium 01 natural sciences olive 03 medical and health sciences lcsh:SB1-1110 Verticillium dahliae Cultivar Olive (Olea europaea) Plant pathogen control Original Research biology Verticillium wilt Soil solarization Sowing biology.organism_classification Olive trees Horticulture Good Health and Well Being 030104 developmental biology plant pathogen control Orchard Integrated Disease Management 010606 plant biology & botany |
| Zdroj: | Frontiers in Plant Science 11:584496 (2020) Helvia. Repositorio Institucional de la Universidad de Córdoba instname Frontiers in Plant Science Frontiers in Plant Science, Vol 11 (2020) Helvia: Repositorio Institucional de la Universidad de Córdoba Universidad de Córdoba |
| Popis: | Verticillium wilt, caused by Verticillium dahliae, challenges olive cultivation and an Integrated Disease Management (IDM) approach is the best-suited tool to combat it. Since 1998, an IDM strategy in an orchard (called Granon, Spain) of the susceptible cv. Picual was conducted by increasing planting density with moderately resistant cv. Frantoio, chemical weed control, and replanting of dead olives with cv. Frantoio following soil solarization. The Verticillium wilt epidemic in Granon orchard was compared to the epidemic in a non-IDM orchard (called Ancla, Spain) with plowed soil and dead ‘Picual’ olives replanted with the same cultivar. Field evaluations (2012-2013) showed an incidence and severity of the disease as Picual-Ancla > Picual-Granon > Frantoio-Granon. The spatiotemporal dynamics of the Verticillium epidemics from 1998 to 2010 were monitored with digital images using SIG. The annual tree mortalities were 5.6% for ‘Picual’ olives in Ancla orchard, and 3.1 and 0.7% for ‘Picual’ and ‘Frantoio’ olives in Granon orchard, respectively. There was a negative relationship between the mortality of olive trees (%) by the pathogen and the height (m) above sea level. The annual mortality of cv. Picual olives was positively correlated with spring rainfalls. The Index of Dispersion and Beta-Binomial distribution showed aggregation of Verticillium-dead olives. In conclusion, this IDM strategy considerably reduced the disease in comparison with traditional agronomic practices. |
| Databáze: | OpenAIRE |
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