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	Provedor de dados Organic Eprints (5) Autor Perälä, Paula (5) Regina, Kristiina (4) Kapuinen, Petri (3) Esala, Martti (2) Tyynelä, Sanna (2) Grönroos, Juha (1) Jansson, Helena (1) Jansson, Håkan (1) Mattila, Pasi (1) Mikkola-Pusa, Johanna (1) Nousiainen, Jouni (1) Närvänen, Aaro (1) Saarinen, Kristina (1) Uusi-Kämppä, Jaana (1) Mais... Palavra-chave Air and water emissions (4) Composting and manuring (2) Tipo do documento Conference paper, poster, etc. (3) Journal paper (1) Report (1) Ano 2009 (1) 2008 (1) 2007 (1) 2005 (2) País Germany (5) Idioma Inglês (5)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última Influence of slurry and mineral fertiliser application technique on N2O and CH4 fluxes from a barley field Organic Eprints Perälä, Paula; Kapuinen, Petri; Esala, Martti; Tyynelä, Sanna; Regina, Kristiina. The effect of different fertilizer application techniques on nitrous oxide and methane emissions were investigated in a field experiment. Gas fluxes were measured during a five months period in 2001 from a barley field located in Vihti, southern Finland. The effects of different fertilizer application techniques on crop yield and quality were also investigated. According to the results, slurry injection produced the most N2O during the measurement period. Placement of mineral fertilizer produced least N2O. Methane fluxes were close to zero and there were no statistically significant differences between the treatments. Tipo: Conference paper, poster, etc. Palavras-chave: Air and water emissions; Composting and manuring. Ano: 2005 URL: http://orgprints.org/8460/1/njf1.pdf Digested slurry as a fertilizer for biogas ley Organic Eprints Kapuinen, Petri; Perälä, Paula; Regina, Kristiina. Digested slurry injected produces in this case comparable yields with mineral fertiliser. Because the primary growth is the largest and of the best quality it should be used for feed as the first option. The re-growths could then be used as a co-substrate in biogas reactors. Digested slurry is a good fertiliser for leys when injected. Injection of non-digested slurry reduces the ammonia emissions and leaching of soluble phosphorus but the significance of the low performance of nitrogen leaves open its fate. Tipo: Conference paper, poster, etc. Palavras-chave: Composting and manuring. Ano: 2007 URL: http://orgprints.org/15104/1/bioenergia.pdf Phosphorus load from equine critical source areas and its reduction using ferric sulphate Organic Eprints Närvänen, Aaro; Jansson, Håkan; Uusi-Kämppä, Jaana; Jansson, Helena; Perälä, Paula. The increasing number of horses, especially in urban areas has made the phosphorus (P) load of exercise areas (paddocks) more and more obvious but there has been a lack of information regarding how to assess this load and what can be done to lower it. In the surface soil (1-2 cm) of areas that are affected by horse manure, like paddocks, we measured very high extractable P contents. When testing soils from these areas using a rainfall simulator we found a close correlation between the extractable soil P in the surface soil and the dissolved reactive P in runoff water. In a runoff treatment test trial we used ferric sulphate to treat paddock runoff water. The chemical dosage was carried out using a tube doser placed in a well. After ferric sulphate... Tipo: Journal paper Palavras-chave: Air and water emissions. Ano: 2008 URL: http://orgprints.org/16436/1/ber.pdf Development of the ammonia emission inventory in Finland : revised model for agriculture Organic Eprints Grönroos, Juha; Mattila, Pasi; Regina, Kristiina; Nousiainen, Jouni; Perälä, Paula; Saarinen, Kristina; Mikkola-Pusa, Johanna. Ammonia emissions in Finland have remained static in recent years and no big changes can be expected in the future as long as there are no drastic alterations in animal production. Similar to ammonia, the emissisons of nitrous oxide depend on the extent of agricultural production. For nitrous oxide the use of mineral fertilizer nitrogen is crucial, because it is the main source of the emissions. The ammonia emission factors obtained with the revised model are compared with emission factors from some other sources. Tipo: Report Palavras-chave: Air and water emissions. Ano: 2009 URL: http://orgprints.org/16399/1/ammonia.pdf Influence of slurry and mineral fertiliser application technique on N2O and CH4 fluxes from a barley field Organic Eprints Perälä, Paula; Kapuinen, Petri; Esala, Martti; Tyynelä, Sanna; Regina, Kristiina. In this study, the effects of different application techniques on emissions of nitrous oxide and methane from a barley field were compared. Tipo: Conference paper, poster, etc. Palavras-chave: Air and water emissions. Ano: 2005 URL: http://orgprints.org/8464/1/njf1.pdf Registros recuperados: 5 Primeira ... 1 ... Última

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