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	Provedor de dados Organic Eprints (2) Autor Dubois, David (2) Frossard, Emmanuel (2) Langmeier, Monika (2) Mäder, Paul (2) Oberson, Astrid (2) Kreuzer, Michael (1) Tagmann, Hans U. (1) Mais... Palavra-chave Composting and manuring (1) Nutrient turnover (1) Soil (1) Tipo do documento Journal paper (2) Ano 2010 (1) 2002 (1) País Germany (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Fresh and residual phosphorus uptake by ryegrass from soils with different fertilization histories Organic Eprints Oberson, Astrid; Tagmann, Hans U.; Langmeier, Monika; Dubois, David; Mäder, Paul; Frossard, Emmanuel. Organic farming largely depends on animal manure as a source of phosphorus (P) and the recycling of animal manure globally is becoming increasingly important. In a pot experiment, using radioactive P labeling techniques, we studied ryegrass uptake of P applied with animal manure and water soluble mineral fertilizer to soils that had been cropped for 22 years according to organic or conventional farming practices. The soils differed in P status and microbial activity. Labeling soil-available P also allowed assessing the uptake from residual P that remained in the soils because of their different fertilization histories. On each soil, recovery of fresh manure P in four harvests of ryegrass shoots was lower than recovery of mineral P. It ranged from 24% to... Tipo: Journal paper Palavras-chave: Nutrient turnover. Ano: 2010 URL: http://orgprints.org/25683/1/Oberson%20et%20al%202010%20PlantSoil%20P%20fertilizers%20DOK%20soils.pdf Nitrogen fertilizer value of cattle manure applied on soils originating from organic and conventional farming systems Organic Eprints Langmeier, Monika; Frossard, Emmanuel; Kreuzer, Michael; Mäder, Paul; Dubois, David; Oberson, Astrid. Nitrogen nutrition of plants in organic farming depends largely on animal manure. In a pot experiment the hypothesis was tested that on a long-term organically managed soil (ORG) characterized by higher soil microbial activity, a greater portion of N applied as cattle manure is mineralized and taken up by plants than on a conventionally managed soil that had received exclusively mineral fertilizers (MIN). Dry matter yields and N uptake by Italian ryegrass were higher by around 20% on ORG than MIN soil. The N utilization of 15N labeled animal manure components and mineralNdiffered little between ORG and MIN. The major part of the increasedNuptake on ORG compared with MIN was due to a significantly greater N supply from ORG soil. The increased capacity of... Tipo: Journal paper Palavras-chave: Composting and manuring; Soil. Ano: 2002 URL: http://orgprints.org/26768/1/Langmeier_et_al_2002_A.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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