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Registros recuperados: 15
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A modelling approach to optimize the management of pea-barley intercropping in Europe Inra
Launay, M.; Brisson, N.; Satger, S.; Hauggaard-Nielsen, H.; Corre-Hellou, G.; Kasynova, E.; Jensen, E.S.; Gooding, M.J.; Dahlmann, C.; Von Fragstein, P.; Pristeri, A.; Romeo, M.; Monti, M..
Tipo: Conference Paper Palavras-chave: CROP MODEL; INTERCROPPING; YIELD; NITROGEN.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011a6730347&uri=/notices/prodinra1/2011/04/
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BioConcens: Biomass and bioenergy production agriculture – consequences for soil fertility, environment, spread of animal parasites and socio-economy Organic Eprints
Oleskowicz-Popiel, P; Ambus, P; Carter, M.S.; Dalgaard, T.; Hauggaard-Nielsen, H; Johansen, A; Jørgensen, U; Nielsen, A.M; Nielsen, H.B.; Nielsen, L.H; Olesen, J.E.; Roepstorff, A; Skytte, K; Schmidt, J.E.; Thomsen, A.B.; Thomsen, M.H.; Jensen, E.S..
The research programme called “international research cooperation and organic integrity” was commenced for a period 2006-2010. It is coordinated by DARCOF (The Danish Research Centre for Organic Farming). The whole programme, with acronym DARCOF III, consists of 15 projects (http://www.darcof.dk/research/darcofiii/index.html). One of them is BIOCONCENS - Biomass and bioenergy production in organic farming – consequences for soil fertility, environment, spread of animal parasites and socio-economy (http://www.bioconcens.elr.dk/uk/). The production of bioenergy in organic agriculture (OA) can reduce its dependency of fossil fuels and decrease green house gasses emission; consequently it will increase sustainability of organic farms. Biorefinery concept based...
Tipo: Conference paper, poster, etc. Palavras-chave: Biodiversity and ecosystem services Recycling; Balancing and resource management Technology assessment.
Ano: 2008 URL: http://orgprints.org/14406/1/poster_Oleskowicz%2Dpopiel.pdf
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Biomass and bioenergy production in organic agriculture. Consequences for soil fertility, environment, spread of animal parasites and socio-economy. BioConcnes, a 4-year interdisciplinary project. Organic Eprints
Hauggaard-Nielsen, H; Ambus, P; Dalgaard, T; Johansen, A; Jørgensen, U; Nielsen, A.M.; Nielsen, L.H.; Olesen, J.E.; Roepstorff, A; Skytte, K; Smith, J.E.; Thomsen, A.B.; Thomsen, M.H.; Jensen, E.S..
Energy production and energy use in organic agriculture (OA) need to be addressed in order to reduce the reliance on non-renewable fossil fuels and minimize greenhouse gas (GHG) emissions. Thus, there is an obligation to find consensus between the apparent opposing aims of renewable (bio) energy production and soil fertility in OA. This project aims at designing and evaluate a combined concept for biomass and bio-energy production in OA, while considering soil fertility.
Tipo: Conference paper, poster, etc. Palavras-chave: Farm nutrient management; Biodiversity and ecosystem services; Social aspects; Technology assessment; Air and water emissions; Farm economics.
Ano: 2007 URL: http://orgprints.org/11312/1/NJF2007%2DBioConcens.pdf
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Can on-farm bioenergy production make organic farming more sustainable? - A model for energy balance, nitrogen losses, and green house gas emissions in a 1000 ha energy catchment with organic dairy farming and integrated bioenergy production Organic Eprints
Pugesgaard, S.; Dalgaard, T.; Jørgensen, U.; Olesen, J.E.; Møller, H.; Jensen, E.S..
Can biogas and bioethanol production make organic farming more sustainable? - Results from a model for the fossil energy balance, Nitrogen losses, and greenhouse gas emissions in a 1000 ha energy catchment with organic dairy farming and integrated biogas and bioethanol production. Dalgaard T1, Pugesgaard S1, Jørgensen U1, Olesen JE1, Møller HB1 and Jensen ES2 1) Dept. Agroecology and Environment. Faculty of Agricultural Sciences (DJF), University of Aarhus. DK-8830 Tjele. Denmark. Contact: tommy.dalgaard@agrsci.dk 2) Biosystems Department, Risø DTU, The National Laboratory for Sustainable Energy, The Technical University of Denmark DK-4000 Roskilde, Denmark The vision of organic farming systems, independent of fossil energy resources, with...
Tipo: Conference paper, poster, etc. Palavras-chave: Farm nutrient management; Air and water emissions.
Ano: 2008 URL: http://orgprints.org/14801/1/14801.pdf
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Choise of species and varieties for grain legumesand cereals for inter- and monocropping in organic agricultural systems Organic Eprints
Joernsgaard, B.; Raza, S.; Jensen, E.S.; Christiansen, J.L..
Short stem peas and early ripening narrow leaved lupins with restricted branched are the best option for inter-cropping with spring barley and - wheat, with respect to synchronized development and stand ability. Traditional branched lupins and faba beans outgrew and ripened much later than the inter-cropped cereals. Weed infestations decreased slightly in the mixtures with barley compared to the cereal mono-culture and several times compared to the legume mono-cultures.
Tipo: Conference paper, poster, etc. Palavras-chave: Cereals; Pulses and oilseeds.
Ano: 2001 URL: http://orgprints.org/1641/1/Choise_of_species_and_varities_Proceedings_poland_2001.pdf
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Exploring options for managing strategies for pea-barley intercropping using a modeling approach Inra
Launay, M.; Brisson, N.; Satger, S.; Hauggaard-Nielsen, H.; Corre-Hellou, G.; Kasynova, E.; Ruske, R.; Jensen, E.S.; Gooding, M.J..
A modeling study was carried out into pea-barley intercropping in northern Europe. The two objectives were (a) to compare pea-barley intercropping to sole cropping in terms of grain and nitrogen yield amounts and stability, and (b) to explore options for managing pea-barley intercropping systems in order to maximize the biomass produced and the grain and nitrogen yields according to the available resources, such as light, water and nitrogen. The study consisted of simulations taking into account soil and weather variability among three sites located in northern European countries (Denmark, United Kingdom and France), and using 10 years of weather records. A preliminary stage evaluated the STICS intercrop model’s ability to predict grain and nitrogen yields...
Tipo: Journal Article Palavras-chave: CROP MODEL; INTERCROP; YIELD; NITROGEN.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011ee37c335&uri=/notices/prodinra1/2011/04/
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Fate of 15N- and 14C from labelled plant material: Recovery in perennial ryegrass-clover mixtures and in pore water of the sward Organic Eprints
Rasmussen, J.; Gjettermann, B.; Eriksen, J.; Jensen, E.S.; Høgh-Jensen, H..
The below ground C and N dynamics leading to organic and inorganic N leaching from perennial ryegrass-clover mixtures are not well understood. Based on the hypothesis that four different plant materials would degrade differently, a 16 months field experiment was conducted to determine (i) the source strength of labelled plant residues in dissolved inorganic N (DIN) and dissolved organic N (DON) in pore water from the plough layer, and (ii) the plant uptake of organically bound N. Litterbags containing 14C- and 15N-labelled ryegrass or clover roots or leaves were inserted into the sward of a ryegrass-clover mixture in early spring. The fate of the released 14C and 15N was monitored in harvested biomass, roots, soil, and pore water percolating from the...
Tipo: Journal paper Palavras-chave: Nutrient turnover; Soil biology; Air and water emissions.
Ano: 2008 URL: http://orgprints.org/16290/1/16290.pdf
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Grain legumes and nitrate leaching: significance and prevention Organic Eprints
Hauggaard-Nielsen, H.; Jensen, E.S.; Aveline, A.; Crozat, Y..
The amount of internationally published evidence on the effects of grain legumes on nitrate leaching is sparse and some studies may have weak points. Nevertheless, this mini-review indicates that the level of N leaching is 0–20 kg N ha-1 greater after pea than after cereals. Methods to prevent N leaching should be further developed and there is a need to genetically improve the root systems of grain legumes.
Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions.
Ano: 2004 URL: http://orgprints.org/3108/1/3108.pdf
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Grain legumes and nitrate leaching: significance and prevention Organic Eprints
Jensen, E.S.; Hauggaard-Nielsen, H.; Aveline, A.; Crozat, Y..
The amount of internationally published evidence on the effects of grain legumes on nitrate leaching is sparse and some studies may have weak points. Nevertheless, this mini-review indicates that the level of N leaching is 0–20 kg N ha-1 greater after pea than after cereals. Methods to prevent N leaching should be further developed and there is a need to genetically improve the root systems of grain legumes.
Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions.
Ano: 2004 URL: http://orgprints.org/3106/1/183_LC_returnedbyJensen_and_edits_SOF(JC).rtf
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Grøngødningsafgrøder kan medvirke til et højt frøudbytte i økologisk dyrket almindelig rajgræs Organic Eprints
Gislum, R.; Boelt, B.; Jensen, E.S..
Grøngødningsafgrøder kan medvirke til et højt frøudbytte i økologisk dyrket almindelig rajgræs
Tipo: Journal paper Palavras-chave: Production systems.
Ano: 2001 URL: http://orgprints.org/463/1/Forskningsnytt.doc
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Modelling dry matter production and resource use in intercrops of pea and barley Organic Eprints
Berntsen, J.; Hauggaard-Nielsen, H.; Olesen, J.E.; Petersen, B.M.; Jensen, E.S.; Thomsen, A..
The FASSET whole farm model was extended with a sub-model for competition between several plant species for light, water and nitrogen. The new model was tested on intercrops of pea (Pisum sativum L.) and spring barley (Hordeum vulgare L.). A three-year dataset on pea and barley sole crop growth was used for calibration. Two datasets that included detailed measurements of crop production, nitrogen uptake and leaf area indices from two sites were used for testing. An arable organic experiment from three sites including several treatments over four years was also used for testing. The model predicted the increase in resource utilisation of pea and barley and effects on pea symbiotic nitrogen fixation satisfactorily. The effects of pea interspecific...
Tipo: Journal paper Palavras-chave: Crop combinations and interactions.
Ano: 2004 URL: http://orgprints.org/4052/1/4052.pdf
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Production of biomass and bioenergy in organic agriculture and its consequences for soil quality, environment, biodiversity and socio-economy Organic Eprints
Johansen, A.; Hauggaard-Nielsen, H.; Ambus, P.; Dalgaard, T.; Jørgensen, U.; Nielsen, A.M.; Nielsen, L.H.; Olesen, J.E.; Roepstorff, A.; Skytte, K.; Smith, J.E.; Thomsen, A.B.; Carter, M.S.; Jensen, E.S..
Production of bioenergy in organic agriculture may be implemented in the future to reduce the reliance on non-renewable fossil fuels and minimize greenhouse gas (GHG) emissions. Therefore it is important to assess the potential effect this may have on soil quality and biological parameters. This project aims at designing and evaluate a combined concept for biomass and bio-energy production in OA, while considering soil bio-geo-chemical cycling of plant nutrients and biodiversity of the soil microbiota.
Tipo: Conference paper, poster, etc. Palavras-chave: Nutrient turnover; Soil biology; Biodiversity and ecosystem services; Soil quality; Air and water emissions; Farm economics; Farm nutrient management; Quality and evaluation of inputs.
Ano: 2008 URL: http://orgprints.org/15157/1/15157.pdf
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Root size fractions of ryegrass and white clover contributes differently to C and N inclusion in SOM Organic Eprints
Rasmussen, J.; Eriksen, J.; Jensen, E.S.; Høgh-Jensen, H..
Grass-clover mixtures are essential in many low-N-input cropping systems, but the importance of various root fractions for the below-ground N dynamics are not well understood. This may be due to the difficulties of studying root longevity and turnover in situ in mixtures. The present field study, investigated (1) the development in root biomass over two growing seasons and (2) the turnover of dual N-15- and C-14-labelled ryegrass and white clover root material. Litter bags containing various dual-labelled plant materials were incubated in cylinders inserted in the topsoil of a young ryegrass-clover ley. Disappearance of C-14 and N-15 from the litter bag material were studied for 1 year following incubation. Four times during two growing seasons, roots were...
Tipo: Journal paper Palavras-chave: Farming Systems; Biodiversity and ecosystem services.
Ano: 2010 URL: http://orgprints.org/17875/4/17875.pdf
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Skal energien øverst på det økologiske jordbrugs dagsorden? Organic Eprints
Jensen, E.S..
Analyser af fødevareproduktionens energiforbrug viser, at økologiske fødevarer pr. produceret kg kun har et marginalt lavere energiforbrug end konventionelle produkter. I lighed med samfundets øvrige sektorer er det økologiske jordbrug stærkt afhængig af fossil energi til produktion, forarbejdning og afsætning. Der synes at have hersket et modsætningsforhold mellem de grundlæggende principper for økologisk jordbrug (ØJ) og interessen for at producere bioenergi. Skal vi i ØJ forsøge at leve op til principperne om primært at basere produktionen på fornybare ressourcer og dermed sørge for, at økologisk jordbrug påny får førertrøjen på i udviklingen af fødevareproduktionen i en mere bæredygtig retning?
Tipo: Newspaper or magazine article Palavras-chave: "Organics" in general.
Ano: 2006 URL: http://orgprints.org/11442/1/11442.pdf
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Strategic management of nitrogen within an organic cropping system using digestate from biogas production of recirculated crop residues Organic Eprints
Råberg, T.; Kreuger, E.; Björnsson, L.; Jensen, E.S..
This project investigates strategic management of nitrogen by integrating crop residue management with biogas production. The approach offers potential for diversified farmer income, as food crops, feedstock for biogas and digestate for nutrient cycling are produced simultaneously. This type of diversification provides multifunctional solutions in organic farming, especially in production without access to animal manure. Biogas production from crop residues offers the possibility of reducing both emissions and leaching of nutrients to the surrounding ecosystems, as compared to the case where crop residue is incorporated into the soil for decomposition (Baggs et al. 2000; Velthof et al. 2002). This type of multifunctional cropping system provides solutions...
Tipo: Conference paper, poster, etc. Palavras-chave: Recycling; Balancing and resource management Farm nutrient management.
Ano: 2013 URL: http://orgprints.org/24556/1/24556.pdf
Registros recuperados: 15
Primeira ... 1 ... Última
 

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