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	Provedor de dados Organic Eprints (3) Autor Li, Xiaoxi (2) Becker, Konstantin (1) Grieb, Beatrice (1) Olesen, Jørgen E. (1) Petersen, Søren O. (1) Sørensen, Peter (1) Mais... Palavra-chave Pulses and oilseeds Nutrient turnover Air and water emissions Farm nutrient management (3) Cereals (1) Crop combinations and interactions Cereals (1) Pasture and forage crops Crop combinations and interactions Cereals (1) Tipo do documento Conference paper, poster, etc. (1) Journal paper (1) Thesis (1) Ano 2015 (2) 2010 (1) País Germany (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Legume-based catch crops for ecological intensification in organic farming Organic Eprints Li, Xiaoxi. Overwintering legume-based catch crops (LBCCs) may play an important role in ecological intensification of agricultural production, especially in low-input systems like organic farming. The emerging concept of ecological intensification (or sustainable intensification) calls for new approaches to produce sufficient food with little environmental impact. Aimed at environment-friendly food production, organic farming may be a good candidate approach to meet the challenges of ecological intensification. Nitrogen (N) is a major constraint of crop yield in organic cropping systems due to restrictions of inorganic fertiliser input. LBCCs are capable to take up N from both the soil and the atmosphere (i.e., via biological N fixation (BNF)), and thus may act as an... Tipo: Thesis Palavras-chave: Pasture and forage crops Crop combinations and interactions Cereals; Pulses and oilseeds Nutrient turnover Air and water emissions Farm nutrient management. Ano: 2015 URL: http://orgprints.org/30112/1/2015%20Dissertation_Xiaoxi%20Li_print.pdf Stickstoffdynamik unter Winterraps nach Kleegrasumbruch im Vergleich zur Nachfrucht Winterweizen im ökologischen Landbau Organic Eprints Grieb, Beatrice; Becker, Konstantin. Die Untersuchungen wurden im Winter 2008/2009 auf dem Versuchsbetrieb der Universität Gießen (Gladbacher Hof) in Hessen (Taunus) ausgeführt. Zweijähriges Kleegras wurde im August, bzw im Oktober umgebrochen und anschließend Winterraps bzw Winterweizen angebaut. Ab November wurden einmal monatlich Bodenproben bis 1,5 m Tiefe genommen und auf den Gehalt an löslichen Stickstoff untersucht. Die Ergebnisse weisen auf eine Mineralisierung, vor allem im Raps, über Winter hin. Gründe dafür könnten die Frostverluste und die erhöhte Mineralisierungsraten in Folge von Frost-Tau-Zyklen sein. Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions Cereals; Pulses and oilseeds Nutrient turnover Air and water emissions Farm nutrient management. Ano: 2010 URL: http://orgprints.org/26560/1/2010_Grieb_Becker_GPW_2010_Abstract.pdf Effects of contrasting catch crops on nitrogen availability and nitrous oxide emissions in an organic cropping system Organic Eprints Li, Xiaoxi; Petersen, Søren O.; Sørensen, Peter; Olesen, Jørgen E.. Abstract Legume-based catch crops (LBCCs) may act as an important source of nitrogen (N) in organic crop rotations because of biological N fixation. However, the potential risk of high nitrous oxide (N2O) emissions needs to be taken into account when including LBCCs in crop rotations. Here, we report the results from a one-year field experiment, which investigated N availability and N2O emissions as affected by three LBCCs, i.e., red clover (CL), red clover–ryegrass mixture (GC) and winter vetch (WV), two non-LBCCs, i.e., perennial ryegrass (GR) and fodder radish (FR), and a control (CO) without catch crops. The effect of two catch crop management strategies was also tested: autumn harvest of the catch crop versus incorporation of whole-crop residues by... Tipo: Journal paper Palavras-chave: Cereals; Pulses and oilseeds Nutrient turnover Air and water emissions Farm nutrient management. Ano: 2015 URL: http://orgprints.org/28131/2/28131.pdf Registros recuperados: 3 Primeira ... 1 ... Última

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