SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Hauggaard-Nielsen, Henrik; Johansen, Anders; Carter, Mette S.; Ambus, Per; Jensen, Erik Steen.

A field experiment was carried out including alternating perennial ryegrass (Lolium perenne L.) – clover (Trifolium repens + Trifolium pretense L.) pasture mix with annual maize (Zea mays L.). Maize was established after soil incorporation of a 1st-year grass-clover in a 6-m wide strip, whereas grass-clover was established without incorporating the 1st-year grass-clover in an equivalent 6-m wide strip. This resulted in an early interspecific competitive advantage for the perennial strip and when growing maize in close proximity to grass-clover total dry matter production was reduced with about 50% compared to >150 cm distance. However, it was partly compensated by greater yields by especially the 50-100 cm harvest. In contrast there was no significant...

Tipo: Journal paper

Palavras-chave: "Organics" in general Crop combinations and interactions Composting and manuring Recycling; Balancing and resource management Farm nutrient management.

Ano: 2012

URL: http://orgprints.org/20914/7/20914.pdf

Arealet med frøbælgplanter bør øges

Hauggaard-Nielsen, Henrik; Jørnsgaard, Bjarne; Jensen, Erik Steen.

Et igangværende samarbejdsprojekt mellem Landbohøjskolen, Danmarks JordbrugsForskning og Risø , finansieret af FØJO (Forskningscenter for Økologisk Jordbrug), tager afsæt i at forøge produktionen af protein og kornafgrøder i det økologiske jordbrug for at blive i stand til at dække et stigende behov for fodermidler til specielt svin og fjerkræ. I henhold til nye EU regler skal alle fodermidler desuden være økologisk producerede, dvs. også fri for gensplejsede organismer, fra 2005. Denne forskning anses ikke kun at være relevant for Økologisk Jordbrug, men i høj grad også de konventionelle landbrugssystemer, specielt fordi debatten om import af soja forventes at fortsætte.

Tipo: Newspaper or magazine article

Palavras-chave: Markets and trade.

Ano: 2002

URL: http://orgprints.org/101/1/landsbladet.bmp

Artsblandinger, udlægsår og eftervirkning

Feltdage ved økologiske forsøgsarealer den 17. - 19. juni 2002 I regi af forskningsprogrammet FØJO II er der blevet mulighed for at tilbyde nogle kursusforløb, hvor de økologiske sædskiftearealer er i fokus. Den 17. – 19. juni 2002 udbydes det første forløb, som gennemføres ved Jyndevad Forsøgsstation i Sønderjylland – og programmet er nu klar. De kommende år vil der blive tilbudt lignende forløb ved de øvrige sædskiftearealer, der ligger på andre jordtyper i Foulum, Årslev, Flakkebjerg og Holeby. Ved Feltdagene vil der blive lagt særligt vægt på at observere og diskutere plantevæksten i de forskellige forsøgsparceller og sædskifter. Desuden vil de hidtidige resultater og registreringer fra arealerne og de aktuelle forskningsprojekter fra Jyndevad og...

Bioethanol - fremtidens energi?

Palavras-chave: Cereals; Pulses and oilseeds.

Ano: 2002

URL: http://orgprints.org/112/1/jundevad190602.pdf

Biogasproduktionens effekter på parasitter, ukrudtsfrø og jordens mikroorganismer

Nye energiløsninger og herunder alternative brændstoffer beror på forskning og udvikling, og dermed usikkerheder og risici for investorer og øvrige aktører. Men det er vigtigt at pointere, at udviklingen af biobrændstofteknologier bør betragtes som gennembrud for øget brug af biomasse til energiformål og materialer. Biobrændstofferne er blot nogle af de første produkter der kan afsættes kommercielt, og i et vist omfang. Betydelige mængder af landbrugets halmressourcer afsættes allerede i dag til kraftvarmeværker bl.a. som følge af biomasseaftalen der tilskynder kraftvarmeværker at øge anvendelsen af biomasse. På nuværende tidspunkt betragtes halm som den mest tilgængelige og mest håndterlige biomasseressource som landbruget stiller til rådighed for...

Tipo: Teaching resource

Palavras-chave: Crop husbandry; Food systems; Environmental aspects; Farm nutrient management.

Ano: 2007

URL: http://orgprints.org/18970/4/18970.pdf

Johansen, Anders; Carter, Mette S.; Hauggaard-Nielsen, Henrik; Nielsen, Henrik Bangsø; Andreasen, Christian; Hansen, Christian M.; Carlsgart, Josefine; Roepstorff, Allan.

Biomass and bioenergy in organic farming systems - The BioConcens project.

Palavras-chave: Soil quality; Nutrient turnover; Health and welfare.

Ano: 2010

URL: http://orgprints.org/18902/4/18902.pdf

Biomass production, symbiotic nitrogen fixation and inorganic N use in dual and tri-component annual intercrops

The production of bioenergy from local biological resources and the maintenance of soil fertility seem to have been opposing aims in organic agriculture (OA). It is however, important to reduce the reliance on fossil fuels and decrease greenhouse gas emissions in OA, especially in the context of enhanced integrity of OA. This interdisciplinary project aims at developing new methods and processes for co-production of bio-ethanol, biogas and animal feed based on resources from OA and associated food processing and suggests the outline of a medium-sized plant for co-production of biogas, bioethanol, and animal feed. The project will also design and test a new cropping system for biomass production to be used for bioenergy, while at the same time safeguarding...

Tipo: Teaching resource

Palavras-chave: "Organics" in general; Crop combinations and interactions; Food systems; Farm nutrient management.

Ano: 2007

URL: http://orgprints.org/18972/4/18972.pdf

Andersen, Mette Klindt; Hauggaard-Nielsen, Henrik; Ambus, Per; Jensen, Erik Steen.

The interspecific complementary and competitive interactions between pea (Pisum sativum L.), barley (Hordeum vulgare L.) and oilseed rape (Brassica napus L.), grown as dual and tri-component intercrops were assessed in a field study in Denmark. Total biomass production and N use at two levels of N fertilisation (0.5 and 4.0 g N/m2), were measured at five harvests throughout a growing season. All intercrops displayed land equivalent ratio values close to or exceeding unity, indicating complementary use of growth resources. Whereas both rape and barley responded positively to increased N fertilisation, irrespective of whether they were grown as sole- or intercrops, pea was strongly suppressed when grown in intercrop. Of the three crops barley was the...

Tipo: Journal paper

Palavras-chave: Nutrient turnover; Crop combinations and interactions.

Ano: 2004

URL: http://orgprints.org/6002/1/MKA.pdf

Blandingsafgrøder giver gevinst

Knudsen, Marie Trydeman; Hauggaard-Nielsen, Henrik; Jensen, Erik Steen.

Bebre udnyttelse af kvælstof, mindre ukrudtsbekæmpelse og højere proteinprocent i kornet er nogle af gevinsterne, når frøbælgplanter dyrkes sammen med byg.

Tipo: Newspaper or magazine article

Palavras-chave: Cereals; Pulses and oilseeds.

Ano: 2002

URL: http://orgprints.org/1354/1/Blandingsafg.htm

Blandingsafgrøder med korn og bølgsæd – erfaringer og nye udfordringer

Temaaften og markvandring om Dyrkning af proteinafgrøder Tirsdag den 6. august kl. 19.00 på Rugballegård 19.00-20.40 Markvandring 19.00-19.20 Velkomst og indledning ved Morten Priesholm, Økologisk Landsforening 19.20-20.40 Markvandring ved Frank Oudshoorn, Rugballegård Forsøg og marker med proteinafgrøder på Rugballegård - Raps - Lupiner - Ærter - Blandinger med korn og bælgsæd - Quinoa - Soja - Kornsorter med højt proteinindhold 20.40-21.45: Temamøde om proteinafgrøder Dyrkning af lupiner: Sortsvalg, sygdomme, samdyrkning med korn Bjarne Jørnsgård, forsker på Den Kgl. Veterinær og Landbohøjskole Blandingsafgrøder med korn og bælgsæd: Effekt på ukrudt, sygdomme, skadedyr og udbytte Henrik Hauggaard-Nielsen, forsker...

Blandingsafgrøder og deres bidrag til bæredygtig planteproduktion

Palavras-chave: Cereals; Pulses and oilseeds.

Ano: 2002

URL: http://orgprints.org/102/1/Rugballe060802.pdf

Der bliver stillet stadig større krav til den økologiske fodring. En større og større del af foderrationen skal være økologisk. Det betyder, at økologiske landmænd har brug for nye fodermidler med et højt og særlig værdifuldt indhold af proteiner. For danske planteavlere er det derfor en udfordring at kunne levere økologiske proteinafgrøder. Hvorfor importerer råvarerne til en dansk økologisk produktion, hvis vi selv kan dyrke dem herhjemme? Hvad ved vi i dag? Hvad er status? Og hvad skal der satses på i vækstsæsonen 2003?

Blandingsforhold ved samdyrkning af hvede og ærter

Palavras-chave: Cereals; Pulses and oilseeds.

Ano: 2002

URL: http://orgprints.org/1367/1/171202_2.pdf

Thematic day arranged by the Danish National Organic Union (Økologisk Landsforening) inviting 20 participants (researchers, advisors and farmers) involved in specifying the final objectives and field protocols for the project "Produktion af kvalitetshvede ved samdyrkning med bælgsæd".

Blandsæd – bland afgrøderne og høst fordele

Palavras-chave: Crop combinations and interactions.

Ano: 2004

URL: http://orgprints.org/3126/1/Blandingsforhold_ved_samdyrkning_af_hvede.pdf

Internt møde for salgskonsulenter arrangeret af DLG-Økologi

Cereal-grain legume intercropping in organic farming - a Danish survey

Palavras-chave: Crop combinations and interactions Cereals; Pulses and oilseeds.

Ano: 2002

URL: http://orgprints.org/117/1/DLG.pdf

Knudsen, Marie Trydeman; Hauggaard-Nielsen, Henrik; Jensen, Erik Steen.

Danish farmers' experiences with cereal-legume intercropping were investigated in a survey. The survey showed the most commonly used mixture and farmers' strategies and experiences with intercropping among other issues. Furthermore, the survey was shown valuable to target future research strategies.

URL: http://orgprints.org/9339/1/Knudsen_et_al._(2004)_Cereal%2Dgrain_legume_intercropping_in_organic_farming_%2D_a_Danish_survey.pdf

Palavras-chave: Cereals; Pulses and oilseeds Production systems Farm nutrient management.

Ano: 2004

Comparison of interspecific competition and N use in pea–barley, faba bean–barley and lupin–barley intercrops grown at two temperate locations

Knudsen, Marie Trydeman; Hauggaard-Nielsen, Henrik; Joernsgaard, Bjarne; Jensen, Erik Steen.

Mixed intercropping of spring barley (Hordeum vulgare L.) with field pea (Pisum sativum L.), faba bean (Vicia faba var. minor L.) or narrow-leafed lupin (Lupinus angustifolius L.) was compared to sole cropping in two field experiments at different locations, on a sandy loam soil and a sandy soil, in Denmark in 2001. Grain legumes were dominant in intercrops on the sandy loam soil, except for lupin, whereas barley was dominant in intercrops on the sandy soil site. Combined intercrop grain yields were comparable to grain yields of the respective sole cropped grain legume or sole cropped, fertilized barley on each soil site. On the sandy loam soil, pea-barley and faba bean-barley intercrops increased the proportion of plant N derived from N2 fixation in...

Tipo: Journal paper

Palavras-chave: Crop combinations and interactions.

Ano: 2004

URL: http://orgprints.org/4049/1/4049.pdf

Competitive ability of grain legume-barley intercrops towards volunteer crops and weeds

Hauggaard-Nielsen, Henrik; Tranberg Nikolajsen, Jacob; Steen Jensen, Erik.

Field pea (Pisum sativum L.) and blue lupin (Lupinus angustifolius L.) were either sole cropped or inter-cropped with barley (Hordeum vulgare L.) at two levels of nitrogen application to determine the effects of interspecific interaction in an intercrop and nitro-gen fertility on competitive ability towards volunteer crops - exemplified by red clover (Trifolium pratense). The dynamically change of competitive ability by intercropped species over time was shown to be im-portant in order to reduce opportunities for growth of volunteer crops and weeds

Consequences of agro-biofuel production for greenhouse gas emissions

Palavras-chave: Crop combinations and interactions.

Ano: 2006

URL: http://orgprints.org/7474/1/Volonteer_pb_lb_proced_v4.pdf

Carter, Mette S.; Hauggaard-Nielsen, Henrik; Johansen, Anders; Ambus, Per.

Currently CO2 from fossil fuel combustion accounts for 57% of the global greenhouse gas emissions, whereas the strong greenhouse gases nitrous oxide (N2O) and methane (CH4) contribute with 8% and 14%, respectively (IPCC, 2007). Agricultural activity is the dominant source of N2O, which is mainly associated with the use of nitrogen based fertilizers in agricultural production. Replacing fossil fuel-derived energy by biomass-derived energy is commonly and with increasing emphasis proposed as a mean to mitigate the CO2 emissions. However, a recent analysis of global emission data proposes that accelerated emissions of N2O associated with the production of biomass for bio-fuel purposes will outweigh the avoided emissions of fossil fuel-derived CO2 (Crutzen et...

Consequences of field N2O emissions for the environmental sustainability of plant-based biofuels produced within an organic farming system

Palavras-chave: Nutrient turnover Recycling; Balancing and resource management Air and water emissions Composting and manuring.

Ano: 2009

URL: http://orgprints.org/16179/1/16179.pdf

Dansk Landbrug som leverandør af energi og konverteringsteknologier - omkostninger for jorden?

Carter, Mette S.; Hauggaard-Nielsen, Henrik; Heiske, Stefan; Jensen, Morten; Thomsen, Sune T.; Schmidt, Jens Ejbye; Johansen, Anders; Ambus, Per.

One way of reducing the emissions of fossil fuel-derived carbon dioxide (CO2) is to replace fossil fuels with biofuels produced from agricultural biomasses or residuals. However, cultivation of soils results in emission of other greenhouse gasses (GHGs), especially nitrous oxide (N2O). Previous studies showed that field emissions of N2O may contribute significantly to total GHG emissions during biofuel production. Furthermore, N2O may counterbalance a considerable part of the global warming reduction, which is achieved by fossil fuel displacement. In the present study, we related measured field emissions of N2O to the reduction in fossil fuel-derived CO2, which was obtained when agricultural biomasses were used for biofuel production. The analysis included...

Tipo: Journal paper

Palavras-chave: Pasture and forage crops Cereals; Pulses and oilseeds Nutrient turnover Air and water emissions.

Ano: 2012

URL: http://orgprints.org/20905/10/20905.pdf

Decomposition of white clover (Trifolium repens) and ryegrass (Lolium perenne) components: C and N dynamics simulated with the DAISY soil organic matter submodel

Bioenergi betragtes som en af de bedste muligheder for på kort sigt at substituere fossile brændsler og reducere udledning af de menneskeskabte drivhusgasser. Det forventes, at landbrugssektoren vil komme til at spille en stadig større rolle for forsyning af samfundets med biomasseressourcer til disse formål. Biobrændstoffer, fremstillet ud fra hele eller dele af diverse landbrugsafgrøder og -biprodukter kan være direkte erstatningsprodukter for transportsektorens nuværende forbrug af fossile brændstoffer. Priserne på konventionelle fossile brændstoffer (f.eks. benzin og dieselolie) er op til tredoblet inden for de seneste 4 år. Forsyningssikkerheden med hensyn til brændstoffer spiller også en stadig større rolle i europæisk og international politik....

Tipo: Teaching resource

Palavras-chave: Recycling; Balancing and resource management Biodiversity and ecosystem services Farm nutrient management.

Ano: 2007

URL: http://orgprints.org/18973/4/18973.pdf

de Neergaard, Andreas; Hauggaard-Nielsen, Henrik; Jensen, Lars Stoumann; Magid, Jakob.

Using data from a decomposition study, we aimed to test the parameterisation of the soil organic matter module of the DAISY model, and link measurable plant litter fractions (lignin, water-soluble) with the model defined plant litter pools. Shoot and root material from perennial ryegrass and white clover was incubated in a sandy loam soil at 9 °C for 94 days. Accumulated CO2 evolution, soil mineral nitrogen (N) and soil microbial biomass-N were measured during the incubation. Marked differences in decomposition rates between above- and below-ground material as well as between the two plant species were observed. The DAISY model was used to interpret the incubation results. Decomposition rates and utilisation efficiencies were modified, under the constraint...

Tipo: Journal paper

Palavras-chave: Crop husbandry.

Ano: 2002

URL: http://orgprints.org/1333/1/1333.pdf

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