Ulrich Köpke 
Improving organic crop cultivation 

Part 1 Crop breeding and cultivation
1.Key issues in breeding and trialling robust cereal cultivars for organic farming: H. Spieß, B. Schmehe and C. Vollenweider, LBS Dottenfelderhof, Germany;
2.Organic seed production, certification and availability: Steven P. C. Groot, Wageningen University & Research, The Netherlands; and Maaike H. J. E. Raaijmakers, Bionext, The Netherlands;
3.Maintaining soil fertility and health in organic crop cultivation: C. Watson, Scotland’s Rural College (SRUC), UK and Swedish University of Agricultural Sciences, Sweden; and E. A. Stockdale, Head of Farming Systems Research, NIAB, UK;
4.Cover crops in organic crop cultivation: Peter von Fragstein und Niemsdorff, Universität Kassel, Germany;
5.The role of crop rotations in organic farming: Bernhard Freyer, University of Natural Resources and Life Sciences (BOKU), Austria;
6.Conservation tillage in organic farming: Maike Krauss and Paul Mäder, Research Institute of Organic Agriculture (Fi BL), Switzerland; Joséphine Peigné, ISARA-Lyon, France; and Julia Cooper, Newcastle University, UK;
7.Manure management in organic farming: Peter Sørensen, Department of Agroecology, Aarhus University, Denmark; Luca Bechini, University of Milan, Italy; and Lars Stoumann Jensen, University of Copenhagen, Denmark;
8.Organic fertilizers and biofertilizers; Lidia Sas Paszt and Slawomir Gluszek, Research Institute of Horticulture, Poland;
9.Improving water management in organic crop cultivation: Michael J. Goss, University of Guelph, Canada; Adrian Unc, Memorial University of Newfoundland, Canada; and Wilfried Ehlers, Georg-August University, Germany;
Part 2 Crop pests and diseases
10.Disease and pest management in organic farming: a case for applied agroecology: M. R. Finckh, S. M. Junge, J. H. Schmidt and O. D. Weedon, Universität Kassel, Germany;
11.Direct plant protection in organic farming: Bernhard Speiser, Hans-Jakob Schärer and Lucius Tamm, Research Institute of Organic Agriculture (Fi BL), Switzerland;
12.Integrated weed management in organic cropping systems: Paolo Bàrberi, Scuola Superiore Sant’Anna, Italy;
Part 3 Standards and monitoring
13.Setting and reviewing standards for organic farming: Susanne Padel, The Organic Research Centre, UK;
14.Measuring and improving the environmental performance of organic farming: A. Muller, Research Institute of Organic Agriculture (Fi BL) and Institute for Environmental Decisions, Department of Environmental Systems Science, Federal Institute of Technology Zurich, Switzerland; M. Meier and C. Schader, Research Institute of Organic Agriculture (Fi BL), Switzerland; A. Gattinger, Justus-Liebig University Giessen, Germany; and M. Steffens, Research Institute of Organic Agriculture (Fi BL), Switzerland;
15.Eco-functional intensification of organic farming; Thomas F. Döring, University of Bonn, Germany;
16.Biodiversity as a prerequisite of sustainable organic farming: Lukas Pfiffner and Laura Armengot, Research Institute of Organic Agriculture (Fi BL), Switzerland;
17.The impact of organic agriculture on diet and health: Kirsten Brandt, Newcastle University, UK;
Part 4 Organic crop cultivation in the developing world
18.Supporting smallholders in organic crop cultivation: the case of East Africa: R. Onwonga, University of Nairobi, Kenya; K. P. Sibuga, Sokoine University of Agriculture, Tanzania; H. Nduku, University of Nairobi, Kenya; L. Sigsgaard, University of Copenhagen, Denmark; A. Saria and L. Shechambo, Sokoine University of Agriculture, Tanzania; M. Montoro, University of Copenhagen, Denmark; C. Chepkoech, Q. Genga and R. Wahome, University of Nairobi, Kenya; N. Halberg, Aarhus University, Denmark; and H. Høgh-Jensen, Technical University of Denmark, Denmark;
19.Improving organic agriculture in the developing world: Africa: Victor Olowe, Institute of Food Security, Environmental Resources and Agricultural Research (IFSERAR), Federal University of Agriculture, Abeokuta (FUNAAB), Nigeria;
20.Improving organic agriculture in the developing world: Asia: Sang Mok Sohn, Dankook University, South Korea;
21.Organic agriculture and agroecology in Latin America: Roberto Ugas, Universidad Nacional Agraria La Molina, Peru;