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Two experiments were conducted during the 2002/03 and 2003/04 seasons at two sites in Chinyika Resettlement Area in Zimbabwe to determine the effects of maize density (30 000, 36 000 and 42 000) plants ha^-1, inter-row spacing (60, 75 and 90 cm) and weeding regime {weeding once at 3 Weeks after Emergence (WAE), twice at 3 and 6 WAE and thrice at 3, 6 and 9 WAE} on maize grain yield and weed biomass and seed production under dryland conditions. The first experiment was organized as a 3×3 factorial testing the effect of the first two factors. The second experiment was designed to test the effect of increasing frequency of weeding in the maize densities and inter-row spacing used in the first experiment. A significant decrease (p<0.05) in maize grain yield, by 16-35%, was observed with an increase in maize density from 30 000 to 42 000 plants ha^-1 at Site 1 in both seasons and Site 2 in the …