Adam, D., “Nutritionists Question Study of Organic Food,” Nature
412 (2001), 666.Google Scholar
Albrecht, H. and A. Mattheis, “The Effect of Organic and Integrated Farming on Rare Arable Weeds on the Forschungsverbund Agrarokosysteme Munchen (FAM) Research Station in Southern Bavaria,” Biological Conservation
86 (1998), 347–356.Google Scholar
Alrøe, H. F., M. Vaarst, and E. S. Kristensen, “Does Organic Farming Face Distinctive LivestockWelfare Issues? A Conceptual Analysis,” Journal of Agricultural and Environmental Ethics
14 (2001), 275–299.Google Scholar
Axelsen, J. A. A. and S. Elmholt, Scenarium om 100% økologisk jordbrug i Danmark, A3.4, Jordbundens biologi, Rapport for Bichel-Udvalget (1998).
Bossio, D. A. and K. M. Scow, “Impact of Carbon and Flooding on PLFA Profiles and Substrate Utilization Patterns of Soil Microbial Communities,” Microbial Ecology
35 (1998), 265–278.Google Scholar
Braae, L., H. Nøhr, and B. S. Petersen, Fuglefaunaen påkonventionelle of økologiske landbrug
, Miljøprojekt 102 (Danish Environmental Projection Agency, Copenhagen, 1988).Google Scholar
Brady, N. C. and R. R. Weil, The Nature and Properties of Soils
, 12th edn. (Prentice Hall, Upper Saddle River, New Jersey, 1999), pp. 468–469.Google Scholar
Cederberg, C. and B. Mattsson, “Life Cycle Assessment of Milk Production — a Comparison of Conventional and Organic Farming,” Journal of Cleaner Production
8 (2000), 49–60.Google Scholar
Chamberlain, D. E., J. D. Wilson, and R. J. Fuller, “A Comparison of Bird Populations on Organic and Conventional Farm Systems in Southern Britain,” Biological Conservation
88 (1999), 307–320.Google Scholar
Cobb, D. R., Feber, A. Hopkins, L. Stockdale, T. O'Riordan, B. Clements, L. Firbank, K. Goulding, S. Jarvis, and D. Macdonald, “Integrating the Environmental and Economic Consequences of Converting to Organic Agriculture: Evidence from a Case Study,” Land Use Policy
16 (1999), 207–221.Google Scholar
Dalgaard, T., N. Halberg, and I. S. Kristensen, “Can Organic Farming Help to Reduce N-Losses? Experiences from Denmark,” Nutrient Cycling in Agroecosystem
52 (1998), 277–287.Google Scholar
Dalgaard, T., N. Halberg, and J. R. Porter, “A Model for Fossil Energy use in Danish Agriculture Used to Compare Organic and Conventional Farming,” Agriculture, Ecosystems and Environment
87 (2001), 51–65.Google Scholar
Drinkwater, L. E., P. Wagoner, and M. Sarrantonio, “Legume-Based Cropping Systems have Reduced Carbon and Nitrogen Losses,” Nature
396 (1998), 262–265.Google Scholar
Duden, R., “Image ans Qualitat von Tomaten,” Gordian
6 (1987), 118–119.Google Scholar
Edwards, J. G. and O. Howells, “The Origin and Hazard of Inputs to Crop Protection in Organic Farming Systems: Are They Sustainable?” Agricultural Systems
67 (2001), 31–47.Google Scholar
Eltun, R., “Comparisons of Nitrogen Leaching in Ecological and Conventional Cropping Systems, Nitrogen Leaching in Ecological Agriculture,” A B Academic Publishers (1995), 103–114.
Eltun, R., “The Apelsvoll Cropping System Experiment, III. Yield and Grain Quality of Cereals,” Norwegian J. Agric. Sci.
10 (1996), 7–21.Google Scholar
Evers, A.M., “Effects of Different Fertilization Practices on Growth, Yield and DryMatter Content of Carrot,” J. Agric. Sci. Finland
60 (1989a), 135–152.Google Scholar
Evers, A. M., “Effects of Different Fertilization Practices on the Carotene Content of Carrot,” J. Agric. Sci. Finland
61 (1989b), 7–14.Google Scholar
Evers, A. M., “Effects of Different Fertilization Practices on the Glucose, Fructose, Sucrose, Taste and Texture of Carrot,” J. Agric. Sci. Finland
61 (1989c), 113–122.Google Scholar
Feber, R. E., L. G. Firbank, P. J. Johnson, and D. W. Macdonald, “The Effects of Organic Farming on Pest and Non-Pest Butterfly Abundance,” Agric. Ecosyst. Envir.
64 (1997), 133–139.Google Scholar
Feber, R. E., J. Bell, P. J. Johnson, L. G. Firbank, and D. W. Macdonald, “The Effects of Organic Farming on Surface-Active Spider (Araneae) Assemblages in Wheat in Southern England, UK,” Journal of Arachnology
26 (1998), 190–202.Google Scholar
Freese, L., R. Friedrich, D. Kendall, and S. Tanner, “Variability of Deoxynivalenol Measurements in Barley,” Journal of AOAC International
83 (2000), 1259–1263.Google Scholar
Gunapala, N. and K. M. Scow, “Dynamics of Soil Microbial Biomass and Activity in Conventional and Organic Farming Systems,” Soil Biology and Biochemistry
30 (1998), 805–816.Google Scholar
Haas, G., F. Wetterich, and U. Köpke, “Comparing Intensive, Extensified and Organic Grassland Farming in Southern Germany by Process Life Cycle Assessment,” Agriculture, Ecosystems and Environment 83 (2001), 43–53.Google Scholar
Hald, A. B. and J. Reddersen, Fugleføde i kornmarker — insekter og vilde planter, Miljøprojekt 125 (Miljøstyrelsen, Kbh, 1990).
Hansen, B., H. F. Alrøe, and E. S. Kristensen, “Approaches to Assess the Environmental Impact of Organic Farming with Particular Regard to Denmark,” Agriculture, Ecosystems and Environment
83 (2001), 11–26.Google Scholar
Hansen, H., “Comparison of Chemical Composition and Taste of Biodynamically and Conventionally Grown Vegetables,” Qualitas Plantarium. Plant Foods Human Nutrit.
30 (1981), 203–211.Google Scholar
House of Lords Select Committee on European Communities (HLSCEC), 16th Report: Organic Farming and European Union
(HMSO, London, 1999).Google Scholar
Hodtke, M., P. A. Araujo, U. Kopke, and D. L. Almeida, “Nutritional Status, Grain Yield and N-Balance of Organically Grown Maize Intercropped with Green Manure,” in D. Foguelman and W. Lockeretz (eds.), Organic Agriculture — the Credible Solution for the XXIst Century: Proceedings of the 12th International IFOAMScientific Conference, Mar del Plata, Argentinien (1998), pp. 135–141.
International Federation of Organic Agriculture Movements (IFOAM), Basic Standards for Organic Production and Processing
(Fa. Werbedruck, Germany, 2000).Google Scholar
Isart, J. and J. J. Llerena (eds.), Biodiversity and Land Use: The Role of Organic Farming. Proceedings of the First ENOF Workshop (Barcelona, 1996).
Jackson, L. E. (ed.), Ecology in Agriculture
(Academic, San Diego, 1997).Google Scholar
Kirchmann, H., “Losses, Plant Uptake and Utilisation of Manure Nitrogen During a Production Cycle,” Acta Agriculturae Scandinavica Supplementum
24 (1985), 77.Google Scholar
Kirchmann, H., “Biological Dynamic Farming — an Occult Form of Agriculture?” J. Agricult. Environ. Ethics
7 (1994), 173–187.Google Scholar
Kirchmann, H., M. Esala, J. Morken, M. Ferm, W. Bussing, J. Gustavsson, and C. Jakobsson, “Ammonia Emissions from Agriculture,” Nutrient Cycling Agroecosyst
51 (1998), 1–3.Google Scholar
Kirchmann, H. and G. Thorvaldsson, “Challenging Targets for Future Agriculture,” Eur. J. Agron.
12 (2000), 145–161.Google Scholar
Kleijn, D., F. Berendse, R. Smit, and N. Gilissen, “Agri-Environmental Schemes do not Effectively Protect Biodiversity in Dutch Agricultural Landscapes,” Nature
413 (2001), 723–725.Google Scholar
Koepf, H. H., W. Schaumann, and B. D. Pettersson, Biologische Landwirtschaft
(Verlag Eugen Ulmer, Suttgart, Germany, 1976).Google Scholar
Krebs, J. R., J. D. Wilson, R. B. Bradbury, and G. M. Siriwardena, “The Second Silent Spring?” Nature 400 (1999), 611–612.Google Scholar
Kristensen, S. P.,J. Mathiasen, J. Lassen, H. B. Madsen, and A. Reenberg, “A Comparison of the Leachable Inorganic Nitrogen Content in Organic and Conventional Farming Systems,” Acta Agric. Scand. Sect. B: Soil Plant Sci.
44 (1994), 19–27.Google Scholar
Lampkin, N., Organic Farming
(Farming Press Books, Ipswitch, 1990).Google Scholar
Lampkin, N., “Opportunities for Profit from Organic Farming,” Paper presented to the RASE Conference: Organic Farming — Science into Practice (Royal Agricultural Society of England, Stoneleigh, 1997).
Lindner, U., “Alterrativer Anbau — Alternative im Erwerbsgemusebau?” Gemuse
21 (1985),412–418.Google Scholar
Lockie, S., K. Lyons, and G. Lawrence, “Constructing ‘Green’ Foods: Corporate Capital, Risk, and Organic Farming in Australia and New Zealand,” Agriculture and Human Values
17 (2000), 315–322.Google Scholar
Lovejoy, S. B., Are Organic Foods Safer? http://www.inetport.com/~texasbot/lovejy.htm (1994).
Lundquist, E. J., K. M. Scow, L. E. Jackson, S. L. Uesugi, and C. R. Johnson, “Rapid Response of Soil Microbial Communities from Conventional, Low Input, and Organic Farming Systems to a Wet/Dry Cycle,” Soil Biology and Biochemistry
31(1999), 1661–1675.Google Scholar
Mander, U., M. Mikk, and M. Kulvik, “Ecological and Low Intensity Agriculture as Contributors to Landscape and Biological Diversity,” Landscape and Urban Planning
46 (1999), 169–177.Google Scholar
Martinson, K., “Eight years of Ecological and Conventional Farming at Ojebyn,” in Mixed Farming Systems in Europe
, Vol. 2 (Dronten, The Netherlands, APMinderhoudhoevereeks, 1998), pp. 109–113.Google Scholar
Matson, P. A.,W. J. Patron, A. G. Power, and M. J. Swift, “Agricultural Intensification and Ecosystem Properties,” Science
277 (1997), 504–509.Google Scholar
Myers, R. J. K., M. van Noordwijk, and P. Vityakon, “Synchrony of Nutrient Release and Plant Demand: Plant Litter Quality, Soil Environment and Farmer Management Options,” in G. Cadisch and K. E. Giller (eds.), Driven by Nature. Plant Litter Quality and Decomposition
(CAB International, Wallingford, UK, 1997), pp. 215–230.Google Scholar
O'Riordan T. and D. Cobb, “Assessing the Consequences of Converting to Organic Agriculture,” Journal of Agricultural Economics
52 (2001), 22–35.Google Scholar
Ploeger, A. M. and H. Vogtmann, “Product and Environment: Quality and Public Health,” in T. V. Ostergaard (ed.), Fundamentals of Organic Agriculture: Proceedings Vol. 1 of the 11th International IFOAM Scientific Conference (Copenhagen, 1996), pp. 176–189.
Rauhe, K., G. Leithold, and D. Michel, “Untersuchungen zur Ertragsund Humusreproduktionsleistung der Luzerne auf sandigem Lehmboden in Trochenlagen,” Archiv fur Acker-und Pflanzenbau und Bodenkunde
31 (1987), 695–702.Google Scholar
Reddersen, J., “Naturindhold i økologisk jordbrug, Natur, miljø og ressourcer i økologisk jordbrug,” FØJO Rapport 3 (Forskningscenter for Økologisk Jordbrug, 1999), pp. 69–84.
Redman, M. (ed.), Organic Farming and the Countryside, a Special Report from British Organic Farmers in Conjunction with the Soil Association (Organic Food and Farm Centre, Bristol, 1992).
Reed, N., In J. J. Hull (ed.), 125th Annual Report of the Secretary of the State Horticultural Society of Michigan (Mich. State Hort. Co., East Lansing, 1995), pp. 68–78.
Reganold, J. P., J. D. Glover, P. K. Andrews, and H. R. Hinman, “Sustainability of Three Apple Production Systems,” Nature
410 (2001), 926–929.Google Scholar
Schupbach, M., “Spritzmittelruckstande in Obst und Gemuse,” Deutsche Lebensmittel Rundschau
82(3) (1986), 76–80.Google Scholar
Schuphan, W., “YieldMaximization versus Biological Value,” Qual. Plant
24 (1975), 281–310.Google Scholar
Siegrist, D. S., L. Pfiffner, and P. Mäder, “Does Organic Agriculture Reduce Soil Erodibility? The Results of a Long-Term Field Study on Loess in Switzerland,” Agriculture, Ecosystems and Environment
69 (1998), 253–264.Google Scholar
Stolton, S., B. Geier, and A. Jeffrey, “Biodiversity and Organic Agriculture,” Ecology and Farming, No. 23, January—April, IFOAM (2000), 22–25.
Stolze, M., A. Piorr, A. Häring, and S. Dabbert, “The Environmental Impact of Organic Farming in Europe,” Organic Farming in Europe: Economics and Policy
, Vol. 6. (University of Hohenheim, Germany, 2000), pp. 1437–6512.Google Scholar
Sundrum, A., “Organic Livestock Farming: A Critical Review,” Livestock Production Science
67 (2001), 207–215.Google Scholar
Temperli, A. T., U. Künsch, and H. Schärer, “Einfluss zweier Anbauweisen auf den Nitratgehalt von Kopfsalat,” Schweizerische landwirtschaftliche Forschung
21 (1982), 167–196.Google Scholar
Tillman, D., “Global Environmental Impacts of Agricultural Expansion: Then Need for Sustainable and Efficient Practices,” Proc. Natl Acad. Sci. USA
96 (1999), 5995–6000.Google Scholar
Trewavas, A., “Urban Myths of Organic Farming,” Nature
410 (2001), 409–410.Google Scholar
Uzogara, S. G., “The Impact of Genetic Modification of Human Foods in the 21st Century: A Review,” Biotechnology Advances
18 (2000), 179–206.Google Scholar
van Elsen, T., “Species Diversity as a Task for Organic Agriculture in Europe,” Agriculture, Ecosystems and Environment
77 (2000), 101–109.Google Scholar
van Mansvelt, J. D. and J. Mulder, “European Features for Sustainable Development: A Contribution to the Dialogue,” Landscape and Urban Planning
27 (1993), 67–90.Google Scholar
Vogtmann, H., A. T. Temperli, U. Kunsch, M. Eichenberger, and P. Ott, “Accumulation of Nitrates in Leafy Vegetables Grown under Contrasting Agricultural Systems,” Biological Agriculture and Horticulture
2 (1984), 51–68.Google Scholar
Weibel, F. P., R. Bickel, S. Leuthold, T. Alfoldi, and U. Niggli, “Are Organically Grown Apples Tastier and Healthier? A Comparative Field Study Using Conventional and Alternative Methods to Measure Fruit Quality,” in D. Foguelman and W. Lockeretz (eds.), Organic Agriculture — the Credible Solution for the XXIst Century: Proceedings of the 12th International IFOAM Scientific Conference (Mar del Plata, Argentinean, 1998), pp. 147–153.
Whalen, J. K., R. W. Parmelee, and C. A. Edwards, “Population Dynamics of Earthworm Communities in Corn Agroecosystems Receiving Organic or Inorganic Fertilizer Amendments,” Biology and Fertility of Soils
27 (1998), 400–407.Google Scholar
Witter, E. and H. Kirchmann, “Peat, Zeolit and Basalt as Adsorbents of Ammoniacal Manure Nitrogen,” Plant Soil
115 (1989a), 43–52.Google Scholar
Witter, E. and H. Kirchmann, “Effect of Ca and Mg Additions to Manure on Ammonia Volatilization during Manure Decomposition,” Plant Soil
115 (1989b), 53–58.Google Scholar
Woese, K., D. Lange, C. Boess, and K. W. Bögl, “A Comparison of Organically and Conventionally Grown Foods — Results of a Review of the Relevant Literature,” J. Sci. Food Agric.
74 (1997), 281–293.Google Scholar
Youngberg, E. G., J. G. Parr, and R. L. Papendick, “Potential Benefits of Organic Farming Practices for Wildlife and Natural Resources,” Transactions of the North American Wildlife and Natural Resources Conference
49 (1984), 141–153.Google Scholar
Younie, D. and C. A. Watson, “Soil Nitrate-N Levels in Organically and Intensively Managed Grassland Systems,” Aspects Appl. Biol.
30 (1992), 235–238.Google Scholar
Zhu, Y., H. Chen, J. Fan, Y. Wang, Y. Li, J. Chen, J. Fan, S. Yang, L. Hu, H. Leung, T. W. Mew, P. S. Teng, Z. Wang, and C. C. Mundt, “Genetic Diversity and Disease Control in Rice,” Nature
406 (2000), 718–722.Google Scholar
Zwankhuizen, M. J., F. Govers, and J. C. Zadoks, “Development of Potato Late Blight Epidemics: Disease Foci, Disease Gradients, and Infection Sources,” Phytopathology
88 (1998), 754–763.Google Scholar