Interplantio mecanizado cereal-floresta em solo podzólico vermelho amarelo.

Abstract

This work was carried out on a low-fertility Red Yellow Podzolic soil containing 79%- sand and 11%-clay in A horizon, at Itapetininga Forestry Experiment Station, at São Paulo State, Brazil. The objective was to evaluate a “taungya” system of a Pinus elliottii Engelmann var. elliottii forest which was interplanted with three rows of corn (Zea mays Linnaeus). The experimental treatments where the crop was established were as follows: a) without agricultural input; b) with dolomitic limestone; c) with NPK fertilizer and d) both limestone and fertilizer, all under a randomized-blocks statistically designed with four replicates. The parameters of evaluation included crop production and initial growing of Pinus elliottii Engelmann var. elliottii forest. There were found not statistical significant differences among yields of the intercropped corn treatments probably to the low amount of clay and organic matter in the Podzolic soil researched. As to the growing until one year-and-a-half old Pinus forest, no differences were found among treatments, probably due to the low activity of these soil as well.