The Third Global Workshop on Proximal Soil Sensing 26-29 May, 2013, Potsdam, Germany. The workshop was organised to bring together global community devoted to advancements in technologies related to measurements by sensors placed in proximity to the soil being tested. As with the previous workshops, it was held under auspices of international union of soil science (IUSS) working group on proximal soil sensing (WG-PSS). Locally, it was organised by Leibniz-Institute of Agricultural Engineering (ATB), Leibniz-Institute of Vegetable and Ornamental Crops (IGZ Großbeeren), and the University of Potsdam (Potsdam, Germany). Over 80 researchers from various disciplines and 23 countries were present. The workshop included two full days of presentations, a field demonstration event and a number of networking and discussion sessions. © 2009-2015 IUSS Working Group on Proximal Soil Sensing.