Mapeamento do estande e distribuição longitudinal de plantas de milho

Abstract

In order to achieve good productivity in the harvest, it is necessary that the sowing process is well executed, in order to guarantee the establishment of a correct seedling stand, according to the needs of each crop. In this context, the objective was to evaluate the stand mapping and the longitudinal distribution of the corn plants through the analysis of spatial variability. The experiment was installed on a commercial farm, in a plot with an area of 35.09 ha. The grid was generated with a sampling grid of 2 points per ha, obtaining 81 sample points. The seedling stand and longitudinal distribution were evaluated using normal, flawed and double spacing. The data were submitted to descriptive statistical analysis and geostatistics with subsequent data interpolation. After spatialization of the variables, thematic maps were constructed. Spatial variability occurs in the stand and in the longitudinal distribution of corn plants. Most of the area had a stand of 2 to 3 plants per meter. The longitudinal distribution for normal spacing was lower than expected for the sower with pneumatic doser. There is a greater variability of the faulty spacing than the double spacing.