Lakkenborg Kristensen, Hanne; Nygaard Soerensen, Joern; Hefner, Margita and De Visser, Richard (2021) Double Cropping, Plant-Based Fertilization And Winter Plant Cover In Vegetable Production For Sustainable Intensification – A System’S Approach. Paper at: Organic World Congress 2021, Science Forum: 6th ISOFAR Conference co-organised with INRA, FiBL, Agroecology Europe, TP Organics and ITAB, Rennes, France, 8 - 10 September, 2021. [Completed]