The overall aim of the thematic network ‘OK-Net Arable’ is to improve the exchange of innovative and traditional knowledge among farmers, farm advisers and scientists to increase productivity and quality in organic arable cropping all over Europe, in order to satisfy future market demand. To achieve this, 'OK-Net Arable' has three specific objectives:1) to create a European network of well-functioning farmer innovation groups representing the best examples of co-innovation by farmers and researchers. The network of farmer innovation groups will serve to exchange experiences in the area of arable crop production and test the innovative end-user and education material developed in the project;2) to digest and synthesize the considerable knowledge available from the reservoir of scientific and practical knowledge in the area of organic arable farming and to identify the best methodology in learning and knowledge exchange. Based on this easily understandable education and end-user material will be developed;3) to create a platform for knowledge exchange across Europe unique in organic farming, offering both innovative education and end-user material as well as offering opportunities for farmer-to-farmer, advisor-to-advisor or researcher-to-advisor-to-farmer learning.The multi-actor approach is prominent in this proposal: (1) at EU level with scientific partners and farmers' associations jointly coordinating the work packages; (2) on the local level with farmers, farm advisors and scientists cooperating in farmer innovation groups. The whole consortium covers in total 13 countries from all corners of Europe giving a well-balanced representation of different climate, geographical and socio-economic conditions.