Modelos matemáticos para previsão da produtividade do milho em dois sistemas de cultivo

Abstract

In order to evaluate the best crop estimation model (harvest of 10 linear meters, ear sampling, density of grains per ear) and the spacing effect between the planting line (0.50 and 0.80 m) on the productivity of maize grain (Zea mays L.) in a same environment, field experiments were conducted in the municipality of Carmo do Rio Claro, in the southern State of Minas Gerais, from August 14th, 2011 to March 6th, 2012. The outlining used was a randomized block banded with 3x2 factorial. We evaluated the estimated productivity in each model. There were differences between the estimation models, and the closest models to the actual production were obtained by harvesting 10 linear meters and by ear sampling. Also there was effect of spacing between lines, obtaining the maximum yield of grain with reduced spacing, i.e. 0.50 m.

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