Enhancing rainwater and nutrient use efficiency for improved crop productivity, farm income and rural livelihoods in the Volta Basin: Ghana Progress Report, 2004-2005 - Fosu, M.; Buah, Saaka S.J.; Kanton, R.A.L.; Bediako, J; Abatania, L; Agyare, Wilson Agyei; Salifu, AB (2012)