Produtividade do milho (Zea mays L.), em função da densidade de plantas e do espaçamento entre linhas.

Abstract

The average productivity of the maize in Brazil, when compared with others countries, is relatively low, can is related the factors, among them are the physical and chemical conditions of the ground are the genetic potential of the used varieties and climate, as well as the cultural treatment adopted, the density of plants and the favorable array of the plants.With the objective to study the density of de plant and gap between rows, two experiments in LATOSSOLO BRUNO Dystrophic were conducted, in the city of Cascavel, Paraná. Were evaluated: height of plants and productivity of grains for plant and area. The experiments were done by the combination of three gaps between rows: 0,45; 0,65 and 0,80 m and three density of plant: 40,000, 57,000 and 75,000 plants ha-1. Experimental delineation of random blocks, with four replications, for two simple hybrids of maize, called H1 and H2 was used. The average plant height did not have significant influence from the combination density of plants and spacing for the two hybrids. The H2 hybrid, presented biggest productivity in the 0,45m spacing.