| Penetration resistance and root growth of oats in tilled and untilled loess soil W Ehlers, U Köpke, F Hesse, W Böhm Soil and Tillage Research 3 (3), 261-275, 1983 | 726 | 1983 |
| Comparing intensive, extensified and organic grassland farming in southern Germany by process life cycle assessment G Haas, F Wetterich, U Köpke Agriculture, ecosystems & environment 83 (1-2), 43-53, 2001 | 715 | 2001 |
| Ecological services of faba bean U Köpke, T Nemecek Field crops research 115 (3), 217-233, 2010 | 525 | 2010 |
| Controle da erosão no Paraná, Brasil: Sistemas de cobertura do solo, plantio direto e preparo conservacionista do solo R Derpsch, CH Roth, N Sidiras, U Kopke, R Krause, J Blanken GTZ/Curitiba, 1991 | 493 | 1991 |
| Nutrient acquisition from arable subsoils in temperate climates: A review T Kautz, W Amelung, F Ewert, T Gaiser, R Horn, R Jahn, M Javaux, ... Soil Biology and Biochemistry 57, 1003-1022, 2013 | 321 | 2013 |
| Effects of traditional and biodynamic farmyard manure amendment on yields, soil chemical, biochemical and biological properties in a long-term field experiment JG Zaller, U Köpke Biology and fertility of soils 40, 222-229, 2004 | 250 | 2004 |
| Organic Agriculture 3.0 is innovation with research G Rahmann, M Reza Ardakani, P Bàrberi, H Boehm, S Canali, M Chander, ... Organic agriculture 7, 169-197, 2017 | 170 | 2017 |
| Weed suppression ability of three winter wheat varieties at different row spacing under organic farming conditions S Drews, D Neuhoff, U Köpke Weed Research 49 (5), 526-533, 2009 | 146 | 2009 |
| Root-length densities of various annual crops following crops with contrasting root systems U Perkons, T Kautz, D Uteau, S Peth, V Geier, K Thomas, KL Holz, ... Soil and Tillage Research 137, 50-57, 2014 | 136 | 2014 |
| Assessment of environmental effects, animal welfare and milk quality among organic dairy farms M Müller-Lindenlauf, C Deittert, U Köpke Livestock Science 128 (1-3), 140-148, 2010 | 121 | 2010 |
| Reduced tillage effects on soil properties and growth of cereals and associated weeds under organic farming C Vakali, JG Zaller, U Köpke Soil and Tillage Research 111 (2), 133-141, 2011 | 115 | 2011 |
| Evidence of improved water uptake from subsoil by spring wheat following lucerne in a temperate humid climate T Gaiser, U Perkons, PM Küpper, DU Puschmann, S Peth, T Kautz, ... Field Crops Research 126, 56-62, 2012 | 111 | 2012 |
| Choice of cultivars in organic farming: New criteria for winter wheat ideotypes JA Eisele, U Köpke Pflanzenbauwissenschaften 1 (1), 19-24, 1997 | 107 | 1997 |
| Root growth dynamics inside and outside of soil biopores as affected by crop sequence determined with the profile wall method E Han, T Kautz, U Perkons, D Uteau, S Peth, N Huang, R Horn, U Köpke Biology and Fertility of Soils 51, 847-856, 2015 | 102 | 2015 |
| Root growth in biopores—evaluation with in situ endoscopy M Athmann, T Kautz, R Pude, U Köpke Plant and Soil 371, 179-190, 2013 | 98 | 2013 |
| Nutrient management in organic farming systems: the case of nitrogen U Köpke Biological Agriculture & Horticulture 11 (1-4), 15-29, 1995 | 86 | 1995 |
| Vergleich der Klimarelevanz ökologischer und konventioneller Landbewirtschaftung G Haas, U Köpke Deutscher Bundestag, 1994 | 81 | 1994 |
| Effects of farming systems on biodiversity B Frieben, U Köpke Organic Farming in Land Use Systems. Proceedings of the First ENOF (The …, 1995 | 76 | 1995 |
| The status of coffee production and the potential for organic conversion in Ethiopia T Mekuria, D Neuhoff, U Köpke Conference on International Agricultural Research for Development, Berlin, 2004 | 74 | 2004 |
| Cotton-basil intercropping: effects on pests, yields and economical parameters in an organic field in Fayoum, Egypt C Schader, JG Zaller, U Köpke Biological agriculture & horticulture 23 (1), 59-72, 2005 | 71 | 2005 |
