... Guinea savannah zone. The Guinea savannah zoneoccupies most of the northern part of the country. Annualrainfall totals about 1,100 mm, falling in a single rainyseason beginning in April or May. ... cultivated.(1) Coastal savannah zone. As the name suggests, the coastal savannah zone includes a narrow belt of savannahthat runs along the coast, widening toward the east of the country. Farmers ... forcommercial maize seed production in Ghana lay in the hands of the Ghana Seed Company, a governmentorganization. Handicapped by recurring shortages of fundsand a lack of trained personnel, the Ghana...