Soil fertility management and agronomic practices for maize systems in Ghana's Guinea Savannah: A training manual for farmers and extension agents - Ofori, Patrick; Dugan, Emmanuel; Edem, Baba Mutala; Issaka, Fuseini; Owusu Ansah, Alexander; Ayamba, Benedicta Essel; Ulzen, Ophelia Osei; Sekyi-Annan, Ephraim; Quansah, Gabriel Willie; Asamoah, Gideon; Yeboah, Edward; Amankwaa-Yeboah, Patricia; et al. (2024)