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	Provedor de dados Organic Eprints (2) Autor Robertson, J (2) Donnelly, E (1) Killham, K (1) May-Roberts, S (1) Paton, G (1) Robinson, D (1) Mais... Palavra-chave Composting and manuring (1) Nutrient turnover (1) Root crops (1) Soil quality (1) Tipo do documento Conference paper, poster, etc. (2) Ano 2006 (2) País Germany (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Potential uses for bracken (Pteridium aquilinum (L.) Kuhn) in organic agrculture Organic Eprints Donnelly, E; Robertson, J; Robinson, D. Bracken is a weed species due to its toxic nature and adverse effects on agriculture and ecology. This poster reviews research into historical uses for fronds and litter harvested as part of organically approved control methods. The use of bracken as an over winter mulch reduced losses of nitrogen and potassium from bare soil and maintained soil temperatures. Bracken litter was found to be a viable biofuel, with a calorific value comparable to wood and low ash and alkali metal contents. The contents of frond ash were investigated, with high concentrations of potassium found giving them a value as organic fertiliser. The addition of frond ash to soil significantly increased clover growth and number of nodules. The addition of frond ash to soil significantly... Tipo: Conference paper, poster, etc. Palavras-chave: Nutrient turnover; Root crops; Composting and manuring. Ano: 2006 URL: http://orgprints.org/10254/1/Potential_uses_for_braken_(Pteridium_aquilinum_(L.)_Kuhn)_in_organic_agriculture.pdf Soil sustainability in organic agricultural production Organic Eprints May-Roberts, S; Robertson, J; Killham, K; Paton, G. Traditionally, the assessment of soil sustainability and the potential impact of cultivation are based upon the application of chemical procedures. In the absence of a biological context, these measurements offer little in understanding longterm changes in soil husbandry. Detailed microcosm investigations were applied as a predictive tool for management change. The microcosms were designed with homogenised soils treated with organic amendments. Key soil functional relationships were quantified using stable isotope techniques, biochemical measurements and traditional approaches. Tipo: Conference paper, poster, etc. Palavras-chave: Soil quality. Ano: 2006 URL: http://orgprints.org/10259/1/Soil_sustainability_in_organic_agricultural_production.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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