S. Acs , P. B. M. Berentsen & R. B. M. Huirne (2005). Modelling conventional and organic farming: a literature review. Njas-Wageningen Journal of Life Sciences 53, 1–18.
H. F. Alrøe & E. S. Kristensen (2002). Towards a systemic research methodology in agriculture: rethinking the role of values in science. Agriculture and Human Values 19, 3–23.
D. A. Andow & C. Zwahlen (2006). Assessing environmental risks of transgenic plants. Ecology Letters 9, 196–214.
S. S. Andrews , J. P. Mitchell , R. Mancinelli , D. L. Karlen , T. K. Hartz , W. R. Horwath , G. S. Pettygrove , K. M. Scow & D. S. Munk (2002). On-farm assessment of soil quality in California's Central Valley. Agronomy Journal 94, 12–23.
B. P. Baker , C. M. Benbrook , E. Groth & K. L. Benbrook (2002). Pesticide residues in conventional, integrated pest management (IPM)-grown and organic foods: insights from three US data sets. Food Additives and Contaminants 19, 427–446.
H. Bengtsson , I. Oborn , S. Jonsson , I. Nilsson & A. Andersson (2003). Field balances of some mineral nutrients and trace elements in organic and conventional dairy farming – a case study at Ojebyn, Sweden. European Journal of Agronomy 20, 101–116.
R. J. Blakemore (2000). Ecology of earthworms under the ‘Haughley Experiment’ of organic and conventional management regimes. Biological Agriculture and Horticulture 18, 141–159.
D. Bourn & J. Prescott (2002). A comparison of the nutritional value, sensory qualities and food safety of organically and conventionally produced foods. Critical Reviews in Food Science and Nutrition 42, 1–34.
L. Carpenter-Boggs , A. C. Kennedy & J. P. Reganold (2000). Organic and biodynamic management: effects on soil biology. Soil Science Society of America Journal 64, 1651–1659.
D. Cobb , R. Feber , A. Hopkins , L. Stockdale , T. O'Riordan , B. Clements , L. Firbank , K. Goulding , S. Jarvis & D. MacDonald (1999). Integrating the environmental and economic consequences of converting to organic agriculture: evidence from a case study. Land Use Policy 16, 207–221.
W. F. Cormack , M. Shepherd & D. W. Wilson (2003). Legume species and management for stockless organic farming. Biological Agriculture and Horticulture 21, 383–398.
D. Dalrymple (2006). Setting the agenda for science and technology in the public sector: the case of international agricultural research. Science and Public Policy 33, 277–290.
K. Delate & C. A. Cambardella (2004). Agroecosystem performance during transition to certified organic grain production. Agronomy Journal 96, 1288–1298.
L. E. Drinkwater , P. Wagoner & M. Sarrantonio (1998). Legume-based cropping systems have reduced carbon and nitrogen losses. Nature 396, 262–265.
M. H. Entz , R. Guilford & R. Gulden (2001). Crop yield and soil nutrient status on 14 organic farms in the eastern portion of the northern Great Plains. Canadian Journal of Plant Science 81, 351–354.
A. Finamore , M. S. Britti , M. Roselli , D. Bellovino , S. Gaetani & E. Mengheri (2004). Novel approach for food safety evaluation. Results of a pilot experiment to evaluate organic and conventional foods. Journal of Agriculture and Food Chemistry 52, 7425–7431.
H. Fredriksson , A. Baky , S. Bernesson , A. Nordberg , O. Noren & P. A. Hansson (2006). Use of on-farm produced biofuels on organic farms: evaluation of energy balances and environmental loads for three possible fuels. Agricultural Systems 89,184–203.
R. J. Fuller , L. R. Norton , R. E. Feber , P. J. Johnson , D. E. Chamberlain , A. C. Joys , F. Mathews , R. C. Stuart , M. C. Townsend , W. J. Manley , M. S. Wolfe , D. W. MacDonald & L. G. Firbank (2005). Benefits of organic farming to biodiversity vary among taxa. Biology Letters 1, 431–434.
C. Garforth , B. Angell , J. Archer & K. Green (2003). Fragmentation or creative diversity? Options in the provision of land management advisory services. Land Use Policy 20, 323–333.
N. G. Halford (2004). Prospects for genetically modified crops. Annals of Applied Biology 145, 17–24.
S. B. Hill & R. J. MacRae (1992). Organic farming in Canada. Agriculture, Ecosystems and Environment 39, 71–84.
D. G. Hole , A. J. Perkins , J. D. Wilson , I. H. Alexander , P. V. Grice & A. D. Evans (2005). Does organic farming benefit biodiversity? Biological Conservation 122, 113–130.
G. Holt & M. Reed (2006). Sociological Perspectives of Organic Agriculture: from Pioneer to Policy. Wallingford: CAB International.
M. H. Huesemann (2001). Can pollution problems be effectively solved by environmental science and technology? An analysis of critical limitations. Ecological Economics 37, 271–287.
M. H. Huesemann (2002). The inherent biases in environmental research and their effects on public policy. Futures 34, 621–633.
S. K. Huxham , D. L. Sparkes & P. Wilson (2005). The effect of conversion strategy on the yield of the first organic crop. Agriculture, Ecosystems and Environment 106, 345–357.
N. L. Johnson , N. Lilja & J. A. Ashby (2003). Measuring the impact of user participation in agricultural and natural resource management research. Agricultural Systems 78, 287–306.
S. Kaffka & H. H. Koepf (1989). A case study on the nutrient regime in sustainable farming. Biological Agriculture and Horticulture 6, 89–106.
A. Kijlstra & I. A. J. M. Eijck (2006). Animal health in organic livestock production systems: a review. Njas-Wageningen Journal of Life Sciences 54, 77–94.
S. B. Kramer , J. P. Reganold , J. D. Glover , B. J. M. Bohannan & H. A. Mooney (2006). Reduced nitrate leaching and enhanced denitifer activity and efficiency in organically fertilized soils. Proceedings of the National Academy of Sciences of the United States of America 103, 4522–4527.
W. Lockeretz & M. D. Anderson (1993). Agricultural Research Alternatives. Lincoln, NE, USA: University of Nebraska Press.
W. Lockeretz , G. Shearer & D. H. Kohl (1981). Organic farming in the corn belt. Science 211, 540–547.
V. Lund & B. Algers (2003). Research on animal health and welfare in organic farming: a literature review. Livestock Production Science 80, 55–68.
V. Lund , G. Coleman , S. Gunnarsson , M. C. Appleby & K. Karkinen (2006). Animal welfare science: working at the interface between the natural and social sciences. Applied Animal Behaviour Science 97, 37–49.
T. Luukkonen (1995). The impacts of research field evaluations on research practice. Research Policy 24, 349–365.
P. Mäder , A. Fliessbach , D. Dubois , L. Gunst , P. Fried & U. Niggli (2002 a). Soil fertility and biodiversity in organic farming. Science 296, 1694–1697.
E. A. Martini , J. S. Buyer , D. C. Bryant , T. K. Hartz & R. F. Denison (2004). Yield increases during the organic transition: improving soil quality or increasing experience? Field Crops Research 86, 255–266.
J. Michelsen (2001). Recent development and political acceptance of organic farming in Europe. Sociologica Ruralis 41, 3–20.
K. Morgan & J. Murdoch (2000). Organic vs. conventional agriculture: knowledge, power and innovation in the food chain. Geoforum 31, 159–173.
T. Mueller & K. Thorup-Kristensen (2001). N-fixation of selected green manure plants in an organic crop rotation. Biological Agriculture and Horticulture 18, 345–363.
T. Nemecek & S. Erzinger (2005). Modelling representative life cycle inventories for Swiss arable crops. International Journal of Life Cycle Assessment 10, 68–76.
S. Padel (2001). Conversion to organic farming: a typical example of the diffusion of an innovation? Sociologia Ruralis 41, 40–61.
M. Quintern , R. G. Joergenesen & H. Wildhagen (2006). Permanent-soil monitoring sites for documentation of soil-fertility development after changing from conventional to organic farming. Journal of Plant Nutrition and Soil Science 169, 564–572.
C. Ramirez-Tortosa , Ø. M. Anderson , P. T. Gardner , P. C. Morrice , S. G. Wood , S. J. Duthie , A. R. Collins & G. C. Duthie (2001). Anthocyanin-rich extract decreases indices of lipid peroxidation and DNA damage in vitamin E depleted rats. Free Radical Biology and Medicine 31, 1033–1037.
J. Rasmussen , V. Langer & H. F. Alroe (2006). Bias in peer review of organic farming grant applications. Agriculture and Human Values 23, 181–188.
J. P. Reganold , L. F. Elliott & Y. L. Unger (1998). Long-term effects of organic and conventional farming on soil erosion. Nature 330, 370–372.
J. P. Reganold , J. D. Glover , P. K. Andrews & H. R. Hinman (2001). Sustainability of three apple production systems. Nature 410, 926–929.
D. Rigby , T. Young & M. Burton (2001). The development of and prospects for organic farming in the UK. Food Policy 26, 599–613.
I. Roschewitz , D. Gabriel , T. Tscharntke & C. Thies (2005). The effects of landscape complexity on arable weed species diversity in organic and conventional farming. Journal of Applied Ecology 42, 873–882.
P. L. Rosenfeld (1992). The potential of transdisciplinary research for sustaining and extending linkages between the health and social sciences. Social Science and Medicine 35, 1343–1357.
H. Schmidt , L. Phillipps , J. P. Welsh & P. Von Fragstein (1999). Legume breaks in stockless organic farming rotations: nitrogen accumulation and influence on the following crops. Biological Agriculture and Horticulture 17, 159–170.
G. Shearer , D. H. Kohl , D. Wanner , G. Kuepper , S. Sweeney & W. Lockeretz (1981). Crop production costs and returns on midwestern organic farms: 1977 and 1978. American Journal of Agricultural Economics 63, 264–269.
O. V. Singh , S. Ghai , D. Paul & R. K. Jain (2006). Genetically modified crops: success, safety assessment, and public concern. Applied Microbiology and Biotechnology 71, 598–607.
C. Stopes , E. I. Lord , L. Philipps & L. Woodward (2002). Nitrate leaching from organic farms and conventional farms following best practice. Soil Use and Management 18, 256–263.
A. J. Trewavas (2001). Urban myths of organic farming. Nature 410, 409–410.
A. Trewavas (2004). A critical assessment of organic farming-and-food assertions with particular respect to the UK and the potential environmental benefits of no-till agriculture. Crop Protection 23, 757–781.
R. R. Van Der Ploeg , W. Bohm & M. B. Kirkham (1999). On the origin of the theory of mineral nutrition of plants and the law of the minimum. Soil Science Society of America Journal 63, 1055–1062.
C. A. Watson , H. Bengtsson , M. Ebbesvik , A-K. Løes , A. Myrbeck , E. Salomon , J. Schroder & E. A. Stockdale (2002). A review of farm-scale nutrient budgets for organic farms as a tool for management of soil fertility. Soil Use and Management 18, 264–273.
L. Woodward (2002). The scientific basis of organic farming. Interdisciplinary Science Reviews 27, 114–119.