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	Provedor de dados Organic Eprints (1) Autor Christensen, Bent T. (1) Guggenberger, Georg (1) Rubæk, Gitte H. (1) Palavra-chave Soil quality (1) Tipo do documento Journal paper (1) Ano 2000 (1) País Germany (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Isolation and characterization of labile organic phosphorus pools in soils from the Askov long-term field experiments Organic Eprints Guggenberger, Georg; Christensen, Bent T.; Rubæk, Gitte H.. Labile soil organic phosphorus (Po) plays a crucial role in plant P nutrition and in environmental eutrophication. This paper discusses recent studies on the nature of labile soil Po and its response to different fertilization practices. Soil material was obtained from the Askov long-term experiment on animal manure and mineral fertilizers. Our analytical approach combined a macroporous anion exchange resin to isolate labile Po and 31P NMR spectroscopy to assess the chemical composition and origin of NaOH-extractable Po. The analyses were carried out on fine earth (<2 mm) and particle-size fractions. The results suggest that the resin extraction isolates an active pool of soil Po that consists primarily of microbially-derived compounds. The size of the... Tipo: Journal paper Palavras-chave: Soil quality. Ano: 2000 URL: http://orgprints.org/337/1/Organic_phosphorus_pools.pdf Registros recuperados: 1 Primeira ... 1 ... Última

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