Effect of plant density on the yield of maize (Zea mays L.)in Ghana
1987
Asafu-Agyei, J.N, Ghana Grains Development Project, Crops Research Institute, CSIR, P.D. Box 3785, Kumasi, Ghana
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 10' plants/ha on grain yield of three maize varieties differing in maturity: early, medium and full season. Maize grain yield was significantly influenced by leaf area index, variety and density. Optimum densities ranged between 49 and 65x I 0' 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.
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