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	Provedor de dados Organic Eprints (4) Autor Askegaard, Margrethe (3) Kristensen, Kristian (3) Olesen, Jørgen E. (3) Rasmussen, Ilse A. (2) Borchert, Anne Friederike (1) Gebbers, Robin (1) Kramer, Eckart (1) Olfs, Hans-Werner (1) Schatz, Thomas (1) Schirrmann, Michael (1) Trautz, Dieter (1) Mais... Palavra-chave Balancing and resource management Nutrient turnover Farm nutrient management (4) Cereals (2) Pulses and oilseeds Composting and manuring Recycling (2) Production systems Crop combinations and interactions Composting and manuring Recycling (1) Technology assessment Composting and manuring Recycling (1) Tipo do documento Journal paper (3) Conference paper, poster, etc. (1) Ano 2011 (3) 2005 (1) País Germany (4) Idioma deu (1) Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Nitrate leaching from organic arable crop rotations: effects of location, manure and catch crop Organic Eprints Askegaard, Margrethe; Olesen, Jørgen E.; Kristensen, Kristian. Nitrate leaching from crop rotations supporting organic grain production was investigated from 1997 to 2000 in a field experiment at three locations in Denmark on different soil types. Three experimental factors were included in the experiment in a factorial design: (1) proportion of N2-fixing crops in the rotation (crop rotation), (2) catch crop (with and without), and (3) manure (with and without). Three, four-course rotations were compared, two at each location. The nitrate leaching was measured using ceramic suction cells. Leaching losses from the crop rotation with grass–clover green manure and without catch crops were 104, 54 and 35 kgNha21 yr21 on the coarse sand, the loamy sand, and the sandy loam, respectively. There was no effect of manure... Tipo: Journal paper Palavras-chave: Production systems Crop combinations and interactions Composting and manuring Recycling; Balancing and resource management Nutrient turnover Farm nutrient management. Ano: 2005 URL: http://orgprints.org/18726/1/18726.pdf Praktische Erfahrungen bei der Erfassung der räumlichen Variabilität von pH-Werten in Ackerböden durch das Online-Messverfahren Veris MSP Organic Eprints Kramer, Eckart; Borchert, Anne Friederike; Gebbers, Robin; Schirrmann, Michael; Trautz, Dieter; Olfs, Hans-Werner; Schatz, Thomas. Der pH-Wert ist ein relevanter Parameter für die Ertragsfähigkeit, auf dessen räumliche Variation zu reagieren ist. Der hohe Bodenuntersuchungsaufwand verhindert dies oft in der Praxis. Die mobile Sensorplattform MSP der Firma Veris Technologies Inc. ermöglicht eine räumlich hoch aufgelöste pH-Kartierung. In diesem Artikel wird die Einsatzfähigkeit dieses Systems für den Ökolandbau unter Praxisbedingungen geprüft. Eine effiziente Erstellung von Boden-pH-Karten ist grundsätzlich möglich. Allerdings sind weitere Untersuchungen zur Vergleichbarkeit der Ergebnisse mit der in Deutschland üblichen Methode notwendig und technische Modifikationen erforderlich, um einen störungsfreien Einsatz unter Praxisbedingungen sicherzustellen. Tipo: Conference paper, poster, etc. Palavras-chave: Technology assessment Composting and manuring Recycling; Balancing and resource management Nutrient turnover Farm nutrient management. Ano: 2011 URL: http://orgprints.org/17624/3/Kramer_17624.pdf Nitrate leaching from organic arable crop rotations is mostly determined by autumn field management Organic Eprints Askegaard, Margrethe; Olesen, Jørgen E.; Rasmussen, Ilse A.; Kristensen, Kristian. Two main challenges facing organic arable farming are the supply of nitrogen (N) to the crop and the control of perennial weeds. Nitrate leaching from different organic arable crop rotations was investigated over three consecutive four-year crop rotations in a field experiment at three locations in Denmark (12 years in total). The experimental treatments were: i) crop rotation, ii) catch crop and iii) animal manure. Nitrate leaching was estimated from measured soil nitrate concentation in ceramic suction cells and modelled drainage. There were significant effects on annual N leaching of location (coarse sand > loamy sand > sandy loam) and catch crops (without > with). Including a grass-clover green manure on 25% of the area did not increase N... Tipo: Journal paper Palavras-chave: Cereals; Pulses and oilseeds Composting and manuring Recycling; Balancing and resource management Nutrient turnover Farm nutrient management. Ano: 2011 URL: http://orgprints.org/18725/1/18725.pdf Nitrate leaching from organic arable crop rotations is mostly determined by autumn field management Organic Eprints Askegaard, Margrethe; Olesen, Jørgen E.; Rasmussen, Ilse A.; Kristensen, Kristian. Two main challenges facing organic arable farming are the supply of nitrogen (N) to the crop and the control of perennial weeds. Nitrate leaching from different organic arable crop rotations was investigated over three consecutive four-year crop rotations in a field experiment at three locations in Denmark (12 years in total). The experimental treatments were: i) crop rotation, ii) catch crop and iii) animal manure. Nitrate leaching was estimated from measured soil nitrate concentation in ceramic suction cells and modelled drainage. There were significant effects on annual N leaching of location (coarse sand > loamy sand > sandy loam) and catch crops (without > with). Including a grass-clover green manure on 25% of the area did not increase N... Tipo: Journal paper Palavras-chave: Cereals; Pulses and oilseeds Composting and manuring Recycling; Balancing and resource management Nutrient turnover Farm nutrient management. Ano: 2011 URL: http://orgprints.org/18849/1/Askegaard_AEE_Nitrate.pdf Registros recuperados: 4 Primeira ... 1 ... Última

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