Fig. 3From: Participatory analysis of groundnut (Arachis hypogaea L.) cropping system and production constraints in Burkina FasoTypes of varieties and characteristics of their kernel size in the study areas from 2015 to 2017. a Varieties utilized from 2015 to 2017. b Kernel size per region from 2015 to 2017. C-E, Central-Eastern; C-N, Central-Northern; C-W, Central-WesternBack to article page