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Soil heath: a comparison between organically and conventionally managed arable soils in the netherlands Organic Eprints
van Diepeningen, Anne D.; Blok, Wim; Korthals, Gerhard W.; van Bruggen, Ariena H.C..
A comparative study of 13 organic and 13 neighboring conventional arable farming systems was conducted in the Netherlands to determine the effect of management practices on chemical and biological soil properties and soil health. Soils were analyzed using a polyphasic approach combining traditional soil analysis, culture-dependent and independent microbiological analyses, a nematode community analysis and an enquiry about different management practices among the farmers. Organic management resulted in significantly lower levels of both nitrate and total soluble nitrogen in the soil, higher numbers of bacteria of different trophic groups, as well as larger species richness in both bacteria and nematode communities and more resilience to a drying-rewetting...
Tipo: Conference paper, poster, etc. Palavras-chave: Soil quality.
Ano: 2005 URL: http://orgprints.org/4336/4/vanDiepeningen_etal_4p_revised%2Ded.doc
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Fate of Escherichia coli O157:H7 in manure and amended soil: effects of cattle feeding, manure type and dairy management Organic Eprints
Franz, Eelco; van Diepeningen, Anne D.; Visser, Anna A.; Blok, Wim J.; van Bruggen, Ariena H.C..
In the present study, we studied the effect of cattle diet on the survival of E. coli O157:H7 in manure from dairy cattle subjected to 6 different feeding regimes consisting of 3 different roughage types and 2 levels of crude protein concentrates. In addition, the rate of survival of E. coli O157:H7 in manure-amended soil as a function of manure type (manure vs. slurry) and dairy farm management (organic vs. conventional) was determined. The roughage type affected significantly the decline rate of E. coli O157:H7: decline was faster in manures with relative higher pH and fiber content. Decline was faster in slurry compared to manure and in organic slurry compared to conventional slurry.
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health.
Ano: 2005 URL: http://orgprints.org/4346/4/Franz_etal_4p_revised%2Ded.doc
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