1. a Agricultural Research Centre-Kade , Institute of Agricultural Research, University of Ghana , Legon , Ghana
2. b Communication and Innovation Studies Group , Wageningen University and Research Centre , Wageningen , The Netherlands
3. c Agricultural Extension Department, School of Agriculture , University of Ghana , Legon , Ghana
4. d Plant Production Systems Group , Wageningen University and Research Centre , Wageningen , The Netherlands
5. e Soil Quality Group , Wageningen University and Research Centre , Wageningen , The Netherlands