Effect of soil type and temperature on survival of Salmonella enterica in poultry manure-amended soils.

摘要: The effects of soil type and temperature on the survival a cocktail five Salmonella enterica serotypes (Enteritidis, Infantis, Montevideo, Typhimurium Zanzibar) in manure-amended soils under controlled laboratory conditions was assessed. Containers clay loam or sandy soil, unaltered amended with 2% (w/w) poultry manure, were inoculated S. (~5 log10 CFU per gram) held at 5, 21 37°C for 6 weeks. Statistical analysis persistence identified significant three-way interaction between type, manure amendment temperature. Clay lower temperatures tended to support over 6 weeks only 1- 2-log reductions respectively. In contrast, sand higher resulted 4-log either 3- Manure had an overarching effect reducing die-off comparison unamended soils. This study highlights that large component variation rate reduction may be attributed combinations environmental factors, particular, It further underscores importance risk management strategies industry guidelines based local data reflect diversity prevailing horticultural production environments. SIGNIFICANCE AND IMPACT OF THE STUDY: environments shown significantly influenced by range individual interacting effects, including temperature, addition. indicates current food safety systems which employ uniform prescribed exclusion period application time harvest unfit purpose certain underestimating overestimating pathogen die-off. These findings periods account factors growing region more appropriate manage microbiological risks associated has been manure.