Geo-spatial tools to bring agronomy to scale, Haertel, M., Alabi, T. R. and Hauser, S., Abstract, p. 366 in the book of abstracts of the Tropentag 2015: management of land use systems for enhanced food security - conflicts, controversies and resolutions, in Humboldt-Universitat Berlin, Germany, September 16 - 18, 2015.