A Survey of Weeds in Organic Farming in Sweden

References

• Adolfsson , E. 1996 . Weed control in Swedish agriculture in the early 20th century—analysis of a contemporary inquiry . Svensk Botanisk Tidskrift , 90 : 199 – 214 . (In Swedish with English summary)
   Google Scholar
• Albrecht , H. and Mattheis , A. 1998 . The effects of organic and integrated farming on rare arable weeds on the Forschungsverbund Agrarökosysteme München (FAM) research station in southern Bavaria . Biological Conservation , 86 : 347 – 356 .
   Web of Science ®Google Scholar
• Andreasen , C. , Streibig , J. C. and Haas , H. 1991 . Soil properties affecting the distribution of 37 weed species in Danish fields . Weed Research , 31 : 181 – 187 .
   Web of Science ®Google Scholar
• Anonymous . 1998 . Yearbook of Agricultural Statistics 1998 Statistiska Centralbyrån, Halmstad. (In Swedish with English summary)
   Google Scholar
• Aronsson , M. 1999 . Swedish Red Data Book of Vascular Plants. Uppsala , , Sweden : ArtDatabanken, SLU . (In Swedish with English summary)
   Google Scholar
• Ellenberg , H. , Weber , H. E. , Wirth , V. , Werner , W. and Paulissen , D. 1992 . Zeigerwerte von Pflanzen in Mitteleuropa . Scripta Geobotanica , 19
   Google Scholar
• Fischer , A. and Milberg , P. 1997 . Effects on the flora of extensified use of field margins . Swedish Journal of Agricultural Research , 27 : 105 – 111 .
   Google Scholar
• Hald , A. B. 1999 . Weed vegetation (wild flora) of long established organic versus conventional cereal fields in Denmark . Annals of Applied Biology , 14 : 307 – 314 .
   Google Scholar
• Hallgren , E. 1996 . Occurrence of broad-leaved weeds on different soils in different crops in Sweden . Swedish Journal of Agricultural Research , 26 : 115 – 123 .
   Google Scholar
• Hallgren , E. , Palmer , M. W. and Milberg , P. 1999 . Data diving with cross-validation: an investigation of broad-scale gradients in Swedish weed communities . Journal of Ecology , 87 : 1037 – 1051 .
   Web of Science ®Google Scholar
• Jongman , R. H.G. , ter Braak , C. J.F. and van Tongeren , O. F.R. 1995 . Data Analysis in Community and Landscape Ecology. Cambridge , U.K. : Cambridge University Press .
   Google Scholar
• Jordbruksverket . 1999) . Svenskt ekologiskt lantbruk inför 2000-talet , Rapport 1999: 10 (In Swedish)
   Google Scholar
• Karg , S. 1995 . Plant diversity in late medieval cornfields of northern Switzerland . Vegetation History & Archaeobotany , 4 : 41 – 50 .
   Google Scholar
• Kauppila , R. 1990 . Conventional and organic cropping systems at Suitia. IV: Weeds . Journal of Agricultural Science in Finland , 62 : 331 – 337 .
   Google Scholar
• Kromp , B. and Meindl , P. 1997 . “ Entomological research in organic agriculture: summary and recommendations. ” . In Entomological Research in Organic Agriculture Edited by: Kromp , B. , Meindl , P. and Harris , P. J.C. 373 – 382 . Bicester , U.K. : A B Academic Publishers .
   Google Scholar
• Lampkin , N. 1996 . Impact of EC Regulation 2078/92 on the development of organic farming in the European Union , CEPFAR/IFOAM Seminar on Organic Agriculture Vignolia, Italy, 6–8th June 1996
   Google Scholar
• Milberg , P. , Hallgren , E. and Palmer , M. W. 2000 . Interannual variation in annual weed biomass on arable land in Sweden . Weed Research , 40 : 311 – 321 .
   Google Scholar
• Moreby , S. J. and Sotherton , N. W. 1997 . “ A comparison of some important chick-food insect groups found in organic and conventionally-grown winter wheat fields in southern England. ” . In Entomological Research in Organic Agriculture Edited by: Kromp , B. , Meindl , P. and Harris , P. J.C. 51 – 60 . Bicester , U.K. : B Academic Publishers .
   Google Scholar
• Moreby , S. J. , Aebischer , N. J. , Southway , S. E. and Southerton , N. W. 1994 . A comparison of the flora and arthropod fauna of organically and conventionally grown winter wheat in southern England . Annals of Applied Biology , 125 : 13 – 27 .
   Web of Science ®Google Scholar
• Reddersen , J. 1997 . “ The arthropod fauna of organic versus conventional cereal fields in Denmark. ” . In Entomological Research in Organic Agriculture Edited by: Kromp , B. , Meindl , P. and Harris , P. J.C. 61 – 71 . Bicester , U.K. : A B Academic Publishers .
   Google Scholar
• Salonen , J. 1993 . Weed infestation and factors affecting weed incidence in spring cereals in Finland—a multivariate approach . Agricultural Science in Finland , 2 : 525 – 536 .
   Google Scholar
• Svensson , R. and Wigren , M. 1982 . Competition, nutrient and herbicide experiments illustrating the decline of some weeds . Svensk Botanisk Tidskrift , 76 : 241 – 258 . (In Swedish with English summary)
   Google Scholar
• Svensson , R. , Wigren-Svensson , M. and Ingelög , T. 1993 . Hotade åkerogräs. Biologi och bevarande i allmogeåkrar. Uppsala. : Databanken för hotade arter, SLU . (In Swedish)
   Google Scholar
• ter Braak , C. J.F. 1988 . “ Partial canonical correspondence analysis. ” . In Classification and Related Methods of Data Analysis Edited by: Bock , H. H. 551 – 558 . Amsterdam , , The Netherlands : Elsevier Science Publishers .
   Google Scholar
• ter Braak , C. J.F. and Smilauer , P. 1998 . CANOCO Reference Manual and User's Guide to Canoco for Windows: Software for Canonical Community Ordination (version 4) Microcomputer Power, Ithaca, New York, U.S.A.
   Google Scholar
• Theunissen , J. 1997 . “ Application of intercropping in organic agriculture. ” . In Entomological Research in Organic Agriculture Edited by: Kromp , B. , Meindl , P. and Harris , P. J.C. 251 – 259 . Bicester , U.K. : A B Academic Publishers .
   Google Scholar
• Tutin , T. G. , Heywood , V. H. , Burges , N. A. , Valentine , D. H. , Walters , S. M. and Webb , D. A. 1964 . Flora Europaea, Vols 1–5. 80 London , U.K. : Cambridge University Press . ).
   Google Scholar
• van Elsen , T. 2000 . Species diversity as a task for organic agriculture in Europe . Agriculture, Ecosystems and Environment , 77 : 101 – 109 .
   Web of Science ®Google Scholar