Effect of plant density on the yield of maize (Zea mays L.) in Ghana

Abstract

Studies were conducted in four locations in Ghana in 1986 to determine the effect of seven planting densities: 10, 20, 30, 40, 50, 60 and 70 x 10³ plants/ha on grain yield of three maize varieties differing in maturity: early, medium and full season. Maize grain yield was significanlly influenced by leaf area index, variety and density. Optimum densities ranged between 49 and 65 x 10³ plants/ha in three of the environments studied and expected yields ranged between 4.5 and 6.5 tons/ha. The results suggest that maize differing in maturity perform differently in the environments studied. Kwadaso, Ejura and Kpeve represent environments in which maize could give reasonably good yields.