Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 362558
Title Eradication of Polymyxa betae by thermal and anaerobic conditions and in the presence of compost leachate
Author(s) Rijn, E. van; Termorshuizen, A.J.
Source Journal of Phytopathology 155 (2007)9. - ISSN 0931-1785 - p. 544 - 548.
Department(s) Biological Farming Systems
Publication type Refereed Article in a scientific journal
Publication year 2007
Keyword(s) plantenziekten - compost - anaërobe omstandigheden - overleving - temperatuur - polymyxa betae - bietenrhizomanievirus - suikerbieten - plant diseases - composts - anaerobic conditions - survival - temperature - beet necrotic yellow vein virus - sugarbeet - yellow-vein-virus - plant-pathogens - sugar-beet - manure
Categories Organic Farming / Plant and Crop Protection (General) / Diseases, Pests and Disorders of Plants (General)
Abstract 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.
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