Definition of yield zones in areas managed with precision agriculture

Abstract

The objective of this study was to remove errors in the productivity data and through temporal analysis to define zones with different grain yield potential in areas managed with precision agriculture. The study was conducted in Palmeira das Missões - RS and Não-Me-Toque - RS, containing six and four collection events, respectively. Data collection was performed by harvester equipped with specific system of monitoring productivity. The raw data were filtered and reduced in squares of 17m, determining the mean productivity of every raster. For the temporal analysis of the data, the mean productivity of the squares were relativized in relation to overall mean crop yield in each event. The overlapping of at least three maps of productivity proportionated differentiation of areas with similar yields over the years. Filtering of data is essential to remove errors and temporal analysis of the maps.