1. Adjei-Gyapong T and Asiamah RD (2002) The interim Ghana soil classification system and its relationship with the World Reference Base for Soil Resources. In: Quatorzième réunion du Sous-Comité ouest et centre africain de corrélation des sols, Abomey, Benin. 9–13 October 2000. World Soil Resources Report No. 98. FAO, Rome, pp 51–76
2. Adjei-Nsiah S, Kermah M (2012) Climate change and shift in cropping system: from cocoa to maize based cropping system in Wenchi area of Ghana. Br J Environ Clim Change 2(2):137–152
3. Adjei-Nsiah S, Leeuwis C, Giller KE, Sakyi-Dawson O, Cobbina J, Kuyper TW, Abekoe M, Van Der Werf W (2004) Land tenure and differential soil fertility management among native and migrant farmers in Wench, Ghana: implications for interdisciplinary action research. Netherlands J Agric Sc 52(3/4):331–348
4. Adjei-Nsiah S, Kuyper TW, Leeuwis C, Abekoe MK, Giller KE (2007) Evaluating sustainable and profitable cropping sequences with cassava and four legume crops: Effects on soil fertility and maize yields in the forest/savannah transitional agro-ecological zone of Ghana. Field Crops Research 103(2):87–97
5. Adjei-Nsiah S, Kuyper TW, Leeuwis C, Abekoe MK, Cobbina J, Sakyi-Dawson O, Giller KE (2008a) Farmers’ agronomic and social evaluation of productivity, yield and N2-fixation in different cowpea varieties and their subsequent effects on a succeeding maize crop. Nutr Cycle Agro-Ecosyst 80:199–209