Araj, S.E. and Wratten, S.D.
2015. Comparing existing weeds and commonly used insectary plants as floral resources for a parasitoid. Biological Control
Askegaard, M., Olesen, J.E., Rasmussen, I.A., and Kristensen, K.
2011. Nitrate leaching from organic arable crop rotations is mostly determined by autumn field management. Agriculture, Ecosystems & Environment
Baggs, E.M., Rees, R.M., Castle, K., Scott, A., Smith, K.A., and Vinten, A.J.A.
2002. Nitrous oxide release from soils receiving N-rich crop residues and paper mill sludge in eastern Scotland. Agriculture, Ecosystems & Environment
Barbir, J., Badenes-Pérez, F.R., Fernández-Quintanilla, C., and Dorado, J.
2015. The attractiveness of flowering herbaceous plants to bees (Hymenoptera: Apoidea) and hoverflies (Diptera: Syrphidae) in agro-ecosystems of Central Spain. Agricultural and Forest Entomology
Beck, D., Wery, J., Saxena, M., and Ayadi, A.
1991. Dinitrogen fixation and nitrogen balance in cool-season food legumes. Agronomy Journal
Bedoussac, L., Journet, É.P., Hauggaard-Nielsen, H., Naudin, C., Corre-Hellou, G., Prieur, L., Jensen, E.S., and Justes, E.
2014. Eco-functional intensification by cereal-grain legume intercropping in organic farming systems for increased yields, reduced weeds and improved grain protein concentration. In S. Bellon and S. Penvern (eds). Organic Farming, Prototype for Sustainable Agricultures. Springer, Dordrecht, Netherlands. p. 47–63.
1999. Characterization of malting barley cultivars with more or less stable grain protein content under varying environmental conditions. European Journal of Agronomy
1995. Green manuring with clover and ryegrass catch crops undersown in spring wheat: Effects on soil structure. Soil Use and Management
Cabrera, M.L., Kissel, D.E., and Vigil, M.F.
2005. Nitrogen mineralization from organic residues. Journal of Environmental Quality
Carlsson, G. and Huss-Danell, K.
2003. Nitrogen fixation in perennial forage legumes in the field. Plant and Soil
Chanakya, H., Venkatsubramaniyam, R., and Modak, J.
1997. Fermentation and methanogenic characteristics of leafy biomass feedstocks in a solid phase biogas fermentor. Bioresource Technology
2015. The story of N: A social history of the nitrogen cycle and the challenge of sustainability. Agricultural History
Deckers, J.A., Nachtergaele, F., and Spaargaren, O.C.
1998. World Reference Base for Soil Resources: Introduction. ACCO. Food and Agriculture Organization of the United Nations, Rome.
De Wit, C. and Van den Bergh, J.
1965. Competition between herbage plants. Journal of Agricultural Science
Diederichsen, E., Frauen, M., Linders, E.G.A., Hatakeyama, K., and Hirai, M.
2009. Status and perspectives of clubroot resistance breeding in crucifer crops. Journal of Plant Growth Regulation
Doré, T., Makowski, D., Malézieux, E., Munier-Jolain, N., Tchamitchian, M., and Tittonell, P.
2011. Facing up to the paradigm of ecological intensification in agronomy: Revisiting methods, concepts and knowledge. European Journal of Agronomy
Drinkwater, L.E. and Snapp, S.S.
2007. Nutrients in agroecosystems: Rethinking the management paradigm. Advances in Agronomy
Evans, J., O'connor, G., Turner, G., Coventry, D., Fettell, N., Mahoney, J., Armstrong, E., and Walsgott, D.
1989. N2 fixation and its value to soil N increase in lupin, field pea and other legumes in south-eastern Australia. Crop and Pasture Science
Foley, J.A., Ramankutty, N., Brauman, K.A., Cassidy, E.S., Gerber, J.S., Johnston, M., Mueller, N.D., O'Connell, C., Ray, D.K., West, P.C., Balzer, C., Bennett, E.M., Carpenter, S.R., Hill, J., Monfreda, C., Polasky, S., Rockstrom, J., Sheehan, J., Siebert, S., Tilman, D., and Zaks, D.P.M.
2011. Solutions for a cultivated planet. Nature
Frøseth, R.B., Bakken, A.K., Bleken, M.A., Riley, H., Pommeresche, R., Thorup-Kristensen, K., and Hansen, S.
2014. Effects of green manure herbage management and its digestate from biogas production on barley yield, N recovery, soil structure and earthworm populations. European Journal of Agronomy
Galloway, J.N., Townsend, A.R., Erisman, J.W., Bekunda, M., Cai, Z., Freney, J.R., Martinelli, L.A., Seitzinger, S.P., and Sutton, M.A.
2008. Transformation of the nitrogen cycle: Recent trends, questions, and potential solutions. Science
2012. Plant-based biogas production for improved nutrient management of beetroot in stockless organic farming. Acta Universitatis Agriculturae Sueciae
Gunnarsson, A., Bengtsson, F., and Caspersen, S.
2010. Use efficiency of nitrogen from biodigested plant material by ryegrass. Journal of Plant Nutrition and Soil Science
Gunnarsson, A., Lindén, B., and Gertsson, U.
2011. Biodigestion of plant material can improve nitrogen use efficiency in a red beet crop sequence. HortScience
Gutser, R., Ebertseder, T., Weber, A., Schraml, M., and Schmidhalter, U.
2005. Short-term and residual availability of nitrogen after long-term application of organic fertilizers on arable land. Journal of Plant Nutrition and Soil Science
Hagman, J., Halling, M., and Dryler, K.
2014. Stråsäd, trindsäd, oljeväxter, potatis: Sortval 2014. Department of Plant Production Ecology, Swedish University of Agricultural Sciences, Uppsala.
Halberg, N., Panneerselvam, P., and Treyer, S.
2015. Eco-functional intensification and food security: Synergy or compromise?
Sustainable Agricultural Research
Harvey, M. and Pilgrim, S.
2011. The new competition for land: Food, energy, and climate change. Food Policy
Hauggaard-Nielsen, H., Jørnsgaard, B., Kinane, J., and Jensen, E.S.
2008. Grain legume–cereal intercropping: The practical application of diversity, competition and facilitation in arable and organic cropping systems. Renewable Agriculture and Food Systems
Hejcman, M., Szaková, J., Schellberg, J., and Tlustoš, P.
2010. The Rengen Grassland Experiment: Relationship between soil and biomass chemical properties, amount of elements applied, and their uptake. Plant and Soil
1996. Grain yield, symbiotic N2 fixation and interspecific competition for inorganic N in pea-barley intercrops. Plant and Soil
1997. The Role of Grain Legume N2 Fixation in the Nitrogen Cycling of Temperate Cropping Systems. Risø National Laboratory, Roskilde, Denmark, Copenhagen, Denmark. p. 86, pp. +13 appendices.
Jensen, E.S., Bedoussac, L., Carlsson, G., Journet, E.-P., Justes, E., and Hauggaard-Nielsen, H.
2015. Enhancing yields in organic crop production by ECO-functional intensification. Sustainable Agriculture Research
Kalinova, J., Vrchotova, N., and Triska, J.
2007. Exudation of allelopathic substances in buckwheat (Fagopyrum esculentum Moench). Journal of Agricultural and Food Chemistry
Kumar, K. and Goh, K.M.
2002. Management practices of antecedent leguminous and non-leguminous crop residues in relation to winter wheat yields, nitrogen uptake, soil nitrogen mineralization and simple nitrogen balance. European Journal of Agronomy
Ledgard, S. and Steele, K.
1992. Biological nitrogen fixation in mixed legume/grass pastures. Plant and Soil
Lehtomäki, A., Huttunen, S., Lehtinen, T., and Rintala, J.
2008. Anaerobic digestion of grass silage in batch leach bed processes for methane production. Bioresource Technology
2015. Legume-Based Catch Crops for Ecological Intensification in Organic Framing. Department of Agroecology, Science and Technology, Aarhus University, Tjele, Denmark. p. 97.
Lissens, G., Vandevivere, P., De Baere, L., Biey, E., and Verstraete, W.
2001. Solid waste digestors: Process performance and practice for municipal solid waste digestion. Water Science and Technology
MEA. 2005. Millennium Ecosystem Assessment, Ecosystems and Human Well-Being. World Resources Institute, Washington, DC, Island Press, Washington, DC.
Möller, K. and Müller, T.
2012. Effects of anaerobic digestion on digestate nutrient availability and crop growth: A review. Engineering in Life Sciences
Möller, K. and Stinner, W.
2009. Effects of different manuring systems with and without biogas digestion on soil mineral nitrogen content and on gaseous nitrogen losses (ammonia, nitrous oxides). European Journal of Agronomy
Möller, K., Stinner, W., Deuker, A., and Leithold, G.
2008. Effects of different manuring systems with and without biogas digestion on nitrogen cycle and crop yield in mixed organic dairy farming systems. Nutrient Cycling in Agroecosystems
Nicolardot, B., Recous, S., and Mary, B.
2001. Simulation of C and N mineralisation during crop residue decomposition: A simple dynamic model based on the C : N ratio of the residues. Plant and Soil
Niggli, U., Slabe, A., Schmid, O., Halberg, N., and Schlüter, M.
2008. Vision for an Organic Food and Farming Research Agenda 2025–Organic Knowledge for the Future. Report. Organic e-prints. Technology Platform Organics. IFOAM Regional Group European Union (IFOAM EU Group), Brussels and International Society of Organic Agriculture Research (ISOFAR), Bonn, Germany. p. 1–45.
Peoples, M.B., Hauggaard-Nielsen, H., and Jensen, E.S.
2009. The potential environmental benefits and risks derived from legumes in rotations. In D.W. Emerich and H. Krishnan (eds). Nitrogen Fixation in Crop Production. Agronomy Monograph, 52. American Society of Agronomy: Crop Science Society of America: Soil Science Society of America, Madison, WI. p. 349–385.
Rockström, J., Steffen, W., Noone, K., Persson, Å., Chapin, F.S., Lambin, E.F., Lenton, T.M., Scheffer, M., Folke, C., and Schellnhuber, H.J.
2009. A safe operating space for humanity. Nature
Sapp, M., Harrison, M., Hany, U., Charlton, A., and Thwaites, R.
2015. Comparing the effect of digestate and chemical fertiliser on soil bacteria. Applied Soil Ecology
Spurway, C.H. and Lawton, K.
1949. Soil Testing: A Practical System of Soil Fertility Diagnosis. Agriculture Experiment Station, Michigan State College, East Lansing.
Steffen, W., Richardson, K., Rockström, J., Cornell, S.E., Fetzer, I., Bennett, E.M., Biggs, R., Carpenter, S.R., de Vries, W., and de Wit, C.A.
2015. Planetary boundaries: Guiding human development on a changing planet. Science
Stinner, W., Moller, K., and Leithold, G.
2008. Effects of biogas digestion of clover/grass-leys, cover crops and crop residues on nitrogen cycle and crop yield in organic stockless farming systems. European Journal of Agronomy
Sutton, M.A., Oenema, O., Erisman, J.W., Leip, A., van Grinsven, H., and Winiwarter, W.
2011. Too much of a good thing. Nature
2001. Are differences in root growth of nitrogen catch crops important for their ability to reduce soil nitrate-N content, and how can this be measured?
Plant and Soil
Tilman, D., Socolow, R., Foley, J.A., Hill, J., Larson, E., Lynd, L., Pacala, S., Reilly, J., Searchinger, T., and Somerville, C.
2009. Beneficial biofuels—the food, energy, and environment trilemma. Science
Trinsoutrot, I., Recous, S., Bentz, B., Lineres, M., Cheneby, D., and Nicolardot, B.
2000. Biochemical quality of crop residues and carbon and nitrogen mineralization kinetics under nonlimiting nitrogen conditions. Soil Science Society of America Journal
Tuomisto, H.L. and Helenius, J.
2008. Comparison of energy and greenhouse gas balances of biogas with other transport biofuel options based on domestic agricultural biomass in Finland. Agricultural and Food Science 17(3):240–251.
Watson, C.A., Atkinson, D., Gosling, P., Jackson, L.R., and Rayns, F.W.
2002. Managing soil fertility in organic farming systems. Soil Use and Management
Wulf, S., Maeting, M., and Clemens, J.
2002. Application technique and slurry co-fermentation effects on ammonia, nitrous oxide, and methane emissions after spreading. Journal of Environmental Quality
Zillén, L., Conley, D.J., Andrén, T., Andrén, E., and Björck, S.
2008. Past occurrences of hypoxia in the Baltic Sea and the role of climate variability, environmental change and human impact. Earth-Science Reviews