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

Hietala, Sanna Maria; Smith, Laurence; Knudsen, Marie Trydeman; Kurpa, Sirpa; Padel, Susanne; Hermansen, John E..

Dairy farming is the largest agricultural contributor to greenhouse gas emissions in Europe. In this study, the carbon footprint of organic dairying was evaluated by means of a life cycle assessment, based on real farm data from six European countries: Austria, Belgium, Denmark, Finland, Italy and United Kingdom. A total of 34 farms were analysed. The assessment was carried out using an attributional approach with system boundaries from cradle to farm gate. In relation to dairy production, a functional unit of 1 kg of energy corrected milk was used. The results gave an average of 1.32 kg CO2 equivalents per kilogramme of energy-corrected milk with standard deviation of 0.22, which is consistent with recent studies. The main contributor to this is enteric...

Tipo: Journal paper

Palavras-chave: Dairy cattle; Air and water emissions.

Ano: 2015

URL: http://orgprints.org/28882/1/Hietala%202015_A10.1007%252Fs13165-014-0084-0.pdf

Environmental assessment of organic juice imported to Denmark: a case study on oranges (Citrus sinensis) from Brazil

Knudsen, Marie Trydeman; Almeida, Gustavo Fonseca de; Langer, Vibeke; Abreu, Lucimar Santiago de; Halberg, Niels.

Growing global trade with organic products has given rise to a debate on the environmental impacts during both production and transport. Environmental hotspots of organic orange juice produced by smallholders in Brazil, processed and imported to Denmark were identified in a case study using a life cycle approach. Furthermore, small-scale organic orange production was compared with small-scale conventional and large-scale organic orange production in the case study area in Brazil. Transport was the main contributor (57%) to the global warming potential of organic orange juice from small-scale farmers imported to Denmark, followed by the processing stage (29%), especially the truck transport of fresh oranges in Brazil and of reconstituted orange juice...

Tipo: Journal paper

Palavras-chave: Processing; Packaging and transportation Air and water emissions Biodiversity and ecosystem services Food systems Fruit and berries Produce chain management Environmental aspects.

Ano: 2011

URL: http://orgprints.org/18417/6/18417.pdf

Økologer udvasker mindre kvælstof

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

Nye samlede resultater viser, at økologiske malkekvægbrug udvasker ca. 40 procent mindre kvælstof end de konventionelle malkekvægbrug, mens kvælstofudvaskningen på økologiske og konventionelle planteavlsbrug i gennemsnittet er ens. Disse resultater omkring kvælstofudvaskning og økologisk jordbrug er nu samlet og udgivet i en artikel på engelsk, der er tilgængelig i Organic Eprints (http://orgprints.org/4637).

Tipo: Journal paper

Palavras-chave: Environmental aspects; Farm nutrient management; Air and water emissions.

Ano: 2006

URL: http://orgprints.org/9213/1/9213.pdf

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

Environmental life cycle assessment of organic grass protein from multispecies mixtures

Knudsen, Marie Trydeman; Dorca-preda, Teodora; Djomo, Sylvestre Njakou; Kristensen, Troels; Ambye-Jensen, Morten; Møller, Henrik B.; Dupont, Y.L.; Cong, W-F; Eriksen, Jørgen.

Including grass leys in organic arable rotations has potentially several benefits such as suppression of certain weeds, increased biodiversity (i.e. pollinators), increased soil carbon sequestration and productivity among others. The biomass from the grass mixtures can be refined into protein feed concentrate for monogastrics that can partly replace imported soybean, while the fibre fraction can be used as ruminant feed or for biogas. The grass mixtures can also be used directly for biogas. Increasing diversity of the mixtures will potentially also increase the yield stability and the benefits for biodiversity (pollinators), while the number of cuts per year will also have an effect. Thus, the use of multispecies mixtures in organic arable rotation for...

Tipo: Journal paper

Palavras-chave: Air and water emissions; Biodiversity and ecosystem services.

Ano: 2020

URL: http://orgprints.org/35188/1/Knudsen%20et%20al.%20%28manuscript%29%20Environmental%20LCA%20of%20organic%20grass%20protein.doc

Produktion af dansk økologisk græsprotein: Kan det betale sig?

Produktion af dansk økologisk protein fra græsmarksblandinger er interessant for økologisk planteavl, hvor det er fordelagtigt at få flere græsmarker ind i sædskiftet. Projektet MultiPlant skal give ny viden om de økonomiske og miljømæssige effekter.

An approach to include soil carbon changes in life cycle assessments

Palavras-chave: Environmental aspects.

Ano: 2016

URL: http://orgprints.org/30898/1/oekologi-erhverv-nr-595.pdf

Petersen, B.M.; Knudsen, Marie Trydeman; Hermansen, J.E.; Halberg, Niels.

Globally, soil carbon sequestration is expected to hold a major potential to mitigate agricultural greenhouse gas emissions. However, the majority of life cycle assessments (LCA) of agricultural products have not included possible changes in soil carbon sequestration. In the present study, a method to estimate carbon sequestration to be included in LCA is suggested and applied to two examples where the inclusion of carbon sequestration is especially relevant: 1) Bioenergy: removal of straw from a Danish soil for energy purposes and 2) Organic versus conventional farming: comparative study of soybean production in China. The suggested approach considers the time of the soil CO2 emissions for the LCA by including the Bern Carbon Cycle Model. Time...

Tipo: Journal paper

Palavras-chave: Nutrient turnover; Air and water emissions; Soil; Research methodology and philosophy; Environmental aspects.

Ano: 2013

URL: http://orgprints.org/22732/7/22732.pdf

Økologisk jordbrugs rolle i globalisering, handel og bæredygtighed

The impact of organic farming on food security in a regional and global perspective

Frisk tropisk frugt hele året – nu også økologisk. Verden bliver mindre – der handles med landbrugsprodukter på kryds og tværs i verden. I supermarkedets økologiafdeling kan man ikke kun få kalvekød og mælk fra danske økologiske landmænd, men også økologiske oste fra Frankrig, økologiske æbler fra Argentina, økologiske bananer fra Mellemamerika og økologiske appelsiner fra Sydamerika. Danske økologiske svin og fjerkræ fodres med sojakager fra Bolivia og solsikkekager fra Ukraine. Er det bæredygtigt? Er det fair trade? Hvad med certificeringen? Hvordan påvirker det de sydamerikanske økologiske bønders fødevaresikkerhed? Kan økologien brødføde verden? Hvordan skal dansk økologisk jordbrug forholde sig til denne globalisering af økologien? I en ny...

Tipo: Conference paper, poster, etc.

Palavras-chave: "Organics" in general; Food systems; Farming Systems.

Ano: 2004

URL: http://orgprints.org/9210/1/9210.pdf

Halberg, Niels; Sulser, Timothy B.; Høgh-Jensen, Henning; Rosegrant, Mark W.; Knudsen, Marie Trydeman.

The spread of organic and agro-ecological farming (OF) methods in developing countries has raised a debate whether a large scale adoption of OF will increase or decrease global food security. This will however depend on a number of socio-economic factors together with the relative yield levels of OF versus conventional farming systems. Relative yields again depend on a number of agro ecological factors and the characteristics of farming systems before conversion. In areas with intensive high-input agriculture, conversion to OF will most often lead to a reduction in crop yields per ha by 20-45 % in crop rotations integrated with leguminous forage crops. In many areas with low input agricultural systems farmers have little incentive or access to use...

Tipo: Book chapter

Palavras-chave: Food security; Food quality and human health Food systems.

Ano: 2006

URL: http://orgprints.org/9209/1/9209.pdf

How to include on-farm biodiversity in LCA on food?

Knudsen, Marie Trydeman; Halberg, Niels.

Life Cycle Assessments (LCA) of food and agriculture generally include potential effects on global warming, eutrophication, ecotoxocity and acidification some of which again affect biodiversity. However, LCA most often does not include specific indicators of the product’s or agricultural system’s impact (negative or positive) on biodiversity. Using LCA methodology on agricultural products makes it highly relevant to assess the impacts of land use. Some LCA’s include a simple category of land use. This is sometimes interpreted as “nature occupation”. However, if this is the only impact category addressing land use related biodiversity, the LCA cannot distinguish between different forms of agricultural systems, which may differ in their biodiversity impact...

Tipo: Conference paper, poster, etc.

Palavras-chave: Environmental aspects; Biodiversity and ecosystem services.

Ano: 2007

URL: http://orgprints.org/10875/1/10875.pdf

Environmental assessment of organic soybean (Glycine max.) imported from China to Denmark: a case study

Estimated N leaching losses for organic and conventional farming in Denmark

Knudsen, Marie Trydeman; Yu Hui, Qiao; Yan, Luo; Halberg, Niels.

Growing global trade with organic products has increased the demand for environmental impact assessments during both production and transport. Environmental hotspots of organic soybeans produced in China and imported to Denmark were identified in a case study using a life cycle assessment approach. Furthermore, environmental impacts of organic and conventional soybeans at farm gate were compared in the case study. The total global warming potential (GWP) per ton organic soybeans imported to Denmark revealed that 51% came from transportation and 35% from the farm level. Comparing organic and conventional soybean at farm gate showed that GWP, non-renewable energy use, acidification and eutrophication was lower per ton organic soybeans, whereas land use was...

Tipo: Journal paper

Palavras-chave: Farming Systems Processing; Packaging and transportation Environmental aspects.

Ano: 2010

URL: http://orgprints.org/17327/1/17327.pdf

Knudsen, Marie Trydeman; Kristensen, Ib Sillebak; Berntsen, Jørgen; Petersen, Bjørn Molt; Kristensen, Erik Steen.

The impact of organic compared to conventional farming practices on N leaching loss was studied for Danish mixed dairy and arable farms using an N balance approach based on representative data. On mixed dairy farms a simple N balance method was used to estimate N surplus and N leaching loss. On arable farms the simple N balance method was unreliable due to changes in the soil N pool. Consequently, the FASSET simulation model was used to estimate N surplus, N leaching loss and the changes in the soil N pool. The study found a lower N leaching loss from organic than conventional mixed dairy farms, primarily due to lower N inputs. On organic arable farms the soil N pool was increasing over years but the N leaching loss was comparable to conventional arable...

Tipo: Journal paper

Palavras-chave: Nutrient turnover; Farming Systems; Air and water emissions.

Ano: 2006

URL: http://orgprints.org/4637/1/4637.pdf

Transport is important in the carbon footprint of imported organic plant products.

Knudsen, Marie Trydeman; Hui, Qiao Yu; Yan, Luo; Almeida, Gustavo Fonseca de; Abreu, Lucimar Santiago de; Halberg, Niels; Langer, Vibeke.

Farmers or consumers may ask about the environmental implications when choosing organic products. Is it sustainable to buy organic products from China or South America? How much does the long-distance transport affect the climate and carbon footprint of the products? And does the organic production in the countries concerned benefit the environment? These are some of the questions raised – and the point of departure for a recently finalized PhD study.

Tipo: Journal paper

Palavras-chave: Air and water emissions; Environmental aspects.

Ano: 2011

URL: http://orgprints.org/22742/1/Transport%20is%20important%20in%20the%20carbon%20footprint%20of%20imported%20organic%20plant%20products.pdf

Mindre udvaskning fra økologer

Bæredygtigheden i at fodre med økologisk græsprotein

Palavras-chave: Farm nutrient management; Air and water emissions.

Ano: 2006

URL: http://orgprints.org/10493/1/10493.pdf

Artikel om bæredygtighedsvurderingerne i projektet SuperGrassPork

URL: http://orgprints.org/35328/1/Klumme-SGP-%C3%98kologi%20og%20Erhverv%2030-11-2018_Marie%20Trydeman.jpg

Palavras-chave: Farming Systems; Environmental aspects.

Ano: 2018

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.

Globalisation as a challenge or opportunity for organic farming

Palavras-chave: Cereals; Pulses and oilseeds.

Ano: 2002

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

El-Nagger, Ahmed; Ounmaa, Andres; Muukka, Eija; Zaleckas, Ernestas; Abraityté, Gerda; Jansons, Imants; Rasmussen, Jim; Ahnström, Johan; Pirhofer-Walzl, Karin; Jensen, Katherine O’Doherty; Jørgensen, Kirstine F.; Sarunaite, Lina; Bleidere, Mara; Knudsen, Marie Trydeman; Pugliese, Massimo; Nielsen, Merete Højrup Møller; Mugurerza, Natalia Bellostas; Bakewell-Stone, Petra; Hansen, Preben Klarskov; Al-Kufaishi, Sermed Adil Abed-Ali; Kobayashi, Sofie; Rydberg, Torbjörn; Klubova, Vera; Liorancas, Viktoras; Høgh-Jensen, Henning.

During one intensive week in October 2005, the authors were gathered to discuss the impact that globalisation has on the Organic Food Systems and the opportunities that globalisation opens up for developing these systems. The meeting took place as a Ph.D. course under the auspices of the Research School of Organic Farming and Food Systems (SOAR; www.soar.dk). All participants research within Organic Agriculture and Food Production in one way or another.

Tipo: Journal paper

Palavras-chave: Food security; Food quality and human health "Organics" in general Food systems Markets and trade Values; Standards and certification.

Ano: 2006

URL: http://orgprints.org/9333/1/9333.pdf

Del og hersk

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

I dag udnytter flere og flere økologiske landmænd fordelene ved samdyrkning af bælgsæd og korn. Fordelene er mere stabile udbytter, mindre ukrudtstryk og lejesæd samt forbedret produktkvalitet for eksempel i form af mindre ærtesyge og højere proteinindhold i kornet. Der er dog stadig et væsentligst problem, nemlig at blandingspartier på nuværende tidspunkt ikke er en accepteret handelsvare. Det er problematisk, hvis ikke man selv har husdyr eller kan afsætte høsten direkte til en landmand, der kan fodre med blandingen. I dag er det oftest nødvendigt at lade korn- og foderstoffirmaet adskille blandingen mod betaling. Denne meromkostning er mange landmænd trætte af. Udbyttegevinsten, der opnås i blandingerne, forsvinder til disse ekstra omkostninger.

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

Palavras-chave: Crop husbandry.

Ano: 2003

URL: http://orgprints.org/1352/2/Andres_Lassen.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.

Tipo: Conference paper, poster, etc.

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

Ano: 2004

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

De bedste ting i livet er gratis

Kronikken er skrevet som en opfølgning på ph.d.-kurset "Ecosystem services in agriculture - a PhD course on the theme: What does a system approach in research mean?". Kronikken omhandler de ydelser vi får gratis fra naturen, vores forhold til naturen og produktionen af mad, de manglende feed-back mekanismer samt perspektiverne for bæredygtig fødevareproduktion.