Journal
EUROPEAN JOURNAL OF SOIL BIOLOGY
Volume 39, Issue 3, Pages 165-171Publisher
GAUTHIER-VILLARS/EDITIONS ELSEVIER
DOI: 10.1016/S1164-5563(03)00032-3
Keywords
Enterobacteriaceae; Fusarium oxysporum f.sp asparagi; Ralstonia solanacearum; Plasmodiophora brassicae; Salmonella typhimurium; Sclerotium cepivorum
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Five pathogens were added to vegetable, fruit and garden waste and their survival was studied during mesophilic (maximum temperature 40 degreesC) anaerobic digestion. Digestion during 6 weeks took. place with a 50/50% (v/v) ratio of digested and fresh, tem undigested material, respectively. Survival of the plant pathogens Fusarium oxysporum f.sp. asparagi and Ralstonia solanacearum, and of the human pathogen Salmonella typhimurium was below the detection levels, and survival of the plant pathogen Plasmodiophora brassicae was low in one experiment and below the detection level in two replicates. In addition, numbers of Enterobacteriaceae originally present in the waste decreased significantly during digestion. However, sclerotia of the plant pathogen Sclerotium cepivorum recovered from the digestion vessel were, at least in part, viable. It is concluded that many pathogens may be inactivated readily, but that anaerobically digested compost may involve some significant phytohygienic problems. From this study, it can,be concluded that vegetable, fruit and garden waste containing onions infected with S. cepivorum should be avoided. (C) 2003 Editions scientifiques et medicales Elsevier SAS. All rights reserved.
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