Vibeke Langer

Search results

• 2024

  Parasitoids of the cabbage seed weevil deliver high and consistent parasitism in variable landscapes: A showcase of conservation biocontrol

  Langer, V. & Jensen, S. M., 2024, In: Pest Management Science. 80, 5, p. 2362-2370 9 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  Open Access

  File
  2 Citations (Scopus)

  10 Downloads (Pure)
• 2014

  Collaborative partnerships between organic farmers in livestock-intensive areas of Denmark

  Asai, M. & Langer, V., 2014, In: Organic Agriculture - Official journal of The International Society of Organic Agriculture Research. 4, 1, p. 63-77 15 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  17 Citations (Scopus)

• Livestock farmer perceptions of successful collaborative arrangements for manure exchange: a study in Denmark

  Asai, M., Langer, V., Frederiksen, P. & Jacobsen, B. H., 2014, In: Agricultural Systems. 128, p. 55-65 11 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  38 Citations (Scopus)

• Responding to environmental regulations through collaborative arrangements: social aspects of manure partnerships in Denmark

  Asai, M., Langer, V. & Frederiksen, P., 2014, In: Livestock Science. 167, p. 370-380 11 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  17 Citations (Scopus)
• 2013

  Road verges and winter wheat fields as resources for wild bees in agricultural landscapes

  Henriksen, C. C. I. & Langer, V., 2013, In: Agriculture, Ecosystems & Environment. 173, p. 66-71 6 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  13 Citations (Scopus)
• 2011

  Innovative education in agroecology: experiential learning for a sustainable agriculture

  Francis, C. A., Jordan, N., Porter, P., Breland, T. A., Lieblein, G., Salomonsson, L., Sriskandarajah, N., Wiedenhoeft, M., DeHaan, R., Braden, I. & Langer, V., 2011, In: Critical Reviews in Plant Sciences. 30, 1-2, p. 226-237 12 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  76 Citations (Scopus)

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

  Knudsen, M. T., Hui, Q. Y., Yan, L., de Almeida, G. F., Santiago de Abreu, L., Halberg, N. & Langer, V., 2011, In: ICROFS News. 2, p. 4-7 4 p.

  Research output: Contribution to journal › Journal article › Research
• 2010

  Energy efficiency of organic pear production in greenhouses in China

  Liu, Y., Jensen, H. H., Egelyng, H. & Langer, V., 2010, In: Renewable Agriculture and Food Systems (Print Edition). 25, 3, p. 196-203 8 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  15 Citations (Scopus)

• Energy use in organic, green and conventional pear producing systems - cases from China

  Liu, Y., Langer, V., Jensen, H. H. & Egelyng, H., 2010, In: Journal of Sustainable Agriculture. 34, 6, p. 630-646 17 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  28 Citations (Scopus)

• Life cycle assessment of fossil energy use and greenhouse gas emissions in Chinese pear production

  Liu, Y., Langer, V., Jensen, H. H. & Egelyng, H., 2010, In: Journal of Cleaner Production. 18, 14, p. 1423-1430 8 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  115 Citations (Scopus)
• 2008

  Patterns of resource use on Danish organic farms: aspects of farm-based rural development

  Frederiksen, P. & Langer, V., 2008, In: International Journal of Agricultural Resources, Governance and Ecology. 7, 1/2, p. 96-109 14 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  5 Citations (Scopus)

• Transdisciplinary research for a sustainable agriculture and food sector

  Francis, C. A., Liblein, G., Breland, T. A., Salomonsen, L., Geber, U., Sriskandarajah, N. & Langer, V., 2008, In: Agronomy Journal. 100, 3, p. 771-776 6 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  55 Citations (Scopus)
• 2007

  Spatial focus of MSc and PhD agricultural research in Denmark, U.S., and Canada

  Langer, V., Rasmussen, J. & Francis, C., 2007, In: Journal of Sustainable Agriculture. 30, 2, p. 29-39 11 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  2 Citations (Scopus)
• 2006

  Bias in peer review of organic farming grant applications

  Rasmussen, J., Langer, V. & Alrød, H. F., 2006, In: Agriculture and Human Values. 23, 2, p. 181-188 8 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  File
  6 Citations (Scopus)

  1627 Downloads (Pure)

• Større naturkvalitet i økologiske jordbrug end i konventionelle? udfordring: naturindhold

  Frederiksen, P., Langer, V. & Levin, G., 2006, In: Global Økologi. 13, 3, p. 13-14 2 p.

  Research output: Contribution to journal › Journal article › Communication
• 2005

  A nordic net-based course in agroecology: integrating student learning and teacher collaboration

  Lieblein, G., Moulton, M., Sriskandarajah, N., Christensen, D., Waalen, W., Breland, T. A., Francis, C., Salomonsson, L. & Langer, V., 2005, In: European Journal of Open, Distance and E-Learning. 1, p. 89-103 15 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

• Factors reducing yield of organic white clover seed production in Denmark

  Langer, V. & Rohde, B., 2005, In: Grass and Forage Science. 60, 2, p. 168-174 7 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  12 Citations (Scopus)

• Økologiske brug skaffer indtægt fra mange slags aktiviteter

  Frederiksen, P. & Langer, V., 2005, In: FØJOenyt. 5, p. 1-3 3 p.

  Research output: Contribution to journal › Journal article › Communication
• 2004

  Localisation and concentration of organic farming in the 1990's: the danish case

  Frederiksen, P. & Langer, V., 2004, In: Tijdschrift voor Economische en Sociale Geographie. 95, 5, p. 539-549 11 p.

  Research output: Contribution to journal › Journal article › Research

• Spatial variation in the localiztion of Danish organic farms

  Frederiksen, P. & Langer, V., 2004, In: DARCOFenews. 2, p. 1-4 4 p.

  Research output: Contribution to journal › Journal article › Communication

• Økologiske landmænd fordeler sig ujævnt i Danmark

  Frederiksen, P. & Langer, V., 2004, In: FØJOenyt. 3, 9 p.

  Research output: Contribution to journal › Journal article › Research
• 2003

  Om muligheden for at intentionerne i Formas økologiske forskningsprogram opfyldes gennem de bevilgede projekter

  Langer, V. & Rasmussen, J., 2003, In: Centrum för uthålligt lantbruk. 6 p.

  Research output: Contribution to journal › Journal article › Research
• 2002

  Changes in farm structure following conversion to organic farming in Denmark

  Langer, V., 2002, In: Renewable Agriculture and Food Systems (Print Edition). 17, 2, p. 75-82 8 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  14 Citations (Scopus)

• På med den grønne hat

  Langer, V. & Høgh-Jensen, H., 2002, In: Det Levende Universitet. 10, 11, p. 9 1 p.

  Research output: Contribution to journal › Journal article › Communication

• På med "Den grønne hat"

  Langer, V. & Høgh-Jensen, H., 2002, In: KVL mosaik ; (11). 2001, p. 9 1 p.

  Research output: Contribution to journal › Journal article › Communication

• Tanker i en lukningstid

  Rasmussen, J. & Langer, V., 2002, In: Jord og Viden. 3, p. 8-9 2 p.

  Research output: Contribution to journal › Journal article › Communication
• 2001

  Hegn og småbiotoper gavner alle

  Brander, P. E., Odderskær, P., Engstrøm Johansen, I., Klarskov Hansen, P., Olrik, D., Monrad Hansen, L. & Langer, V., 2001, In: Vaekst. 3, p. 24-25 2 p.

  Research output: Contribution to journal › Journal article › Communication

• Pejling af fremtidens agronomuddannelse

  Rasmussen, J. & Langer, V., 2001, In: Jord og Viden. 146, 18, p. 10-12 3 p.

  Research output: Contribution to journal › Journal article › Communication

• The potential of leys and short rotation coppice hedges as reservoirs for parasitoids of cereal aphids in organic agriculture

  Langer, V., 2001, In: Agriculture, Ecosystems & Environment. 87, p. 81-92 12 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  20 Citations (Scopus)
• 2000

  Sammenhænge på kryds & tværs

  Rasmussen, J. & Langer, V., 2000, In: Det Levende Universitet. 5, p. 8-9 2 p.

  Research output: Contribution to journal › Journal article › Communication

• Økologisk hvidkløver: hvordan kan det lade sig gøre?

  Rohde, B., Langer, V. & Monrad Hansen, L., 2000, In: Dansk frøavl. 9, p. 148-149 2 p.

  Research output: Contribution to journal › Journal article › Communication
• 1999

  Omlægning til økologisk jordbrug: konsekvenser for natur og miljø

  Langer, V., Odderskær, P., Heidmann, T. & Dalgaard, T., 1999, In: Miljøforskning : det strategiske miljøforskningsprogram. 39, p. 21-25 5 p.

  Research output: Contribution to journal › Journal article › Communication
• 1998

  Energetic, economic and ecological balances of a combined food and energy system

  Kuemmel, B., Langer, V., Magid, J., Neergaard, A. D. & Porter, J. R., 1998, In: Biomass & Bioenergy. (4/5), p. 407-416 10 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  44 Citations (Scopus)
• 1997

  Økologisk jordbrug er anvendelsesorienteret

  Rasmussen, J., Langer, V. & Kristensen, L., 1997, In: Det Levende Universitet. 6, 51, p. 10-11 2 p.

  Research output: Contribution to journal › Journal article › Communication
• 1996

  Insect-crop interactions in a diversified cropping system: parasitism by Aleochara bilineata and Trybliographa rapae of the cabbage root fly, Delia radicum, on cabbage in the presence of white clover

  Langer, V., 1996, In: Entomologia Experimentalis et Applicata. 80, p. 365-374 10 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  28 Citations (Scopus)
• 1995

  Entomopathogenic fungi in predatory beetles (Col. Carabidae and Staphylinidae) from agricultural fields

  Steenberg, T., Langer, V. & Esbjerg, P., 1995, In: BioControl. 40, 1, p. 77-85 9 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  31 Citations (Scopus)