Eradication of Polymyxa betae by Thermal and Anaerobic Conditions and in the Presence of Compost Leachate
| Autor: | Aad J. Termorshuizen, E. van Rijn |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
compost
Physiology sugarbeet anaerobic conditions Plant Science engineering.material composts survival yellow-vein-virus overleving Biologische bedrijfssystemen temperatuur Botany Genetics Beet necrotic yellow vein virus Leachate plant-pathogens Incubation Biological Farming Systems anaërobe omstandigheden bietenrhizomanievirus biology Compost fungi temperature PE&RC biology.organism_classification Spore Horticulture polymyxa betae sugar-beet manure suikerbieten engineering plantenziekten Aerobie Sugar beet plant diseases Agronomy and Crop Science Anaerobic exercise beet necrotic yellow vein virus |
| Zdroj: | Journal of Phytopathology, 155(9), 544-548 Journal of Phytopathology 155 (2007) 9 |
| ISSN: | 1439-0434 0931-1785 |
| DOI: | 10.1111/j.1439-0434.2007.01275.x |
| Popis: | The abiotic conditions required for eradication of Polymyxa betae, the vector of Beet necrotic yellow vein virus in sugar beet, were investigated. Survival of resting spores of P. betae was determined under aerobic (30 min, 4 days and 21 days) and anaerobic (4 days) conditions under several temperature regimes in a water suspension and in leachate extracted from an aerobic compost heap. In water under aerobic conditions the lethal temperature was 60, 55 and 40°C for exposure times of 30 min, 4 days and 21 days, respectively. The effect of compost leachate and/or anaerobic conditions on survival of P. betae depended on temperature. After incubation for 4 days at 20°C, no significant effects of anaerobic conditions or leachate on the survival of P. betae were found. However, at 40°C for 4 days under anaerobic conditions, survival of P. betae was significantly lower than survival under aerobic conditions in water as well as in leachate. In leachate taken from an aerobic compost heap, aerobically incubated at 40°C for 4 days, survival of P. betae was significantly lower than survival in water at the same temperature. As anaerobic spots are prevalent in aerobic compost heaps, especially during the thermophilic phase, actual inactivation temperatures under composting conditions are likely to be lower than the temperatures we found for eradication in water under aerobic conditions. |
| Databáze: | OpenAIRE |
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