Análise da variabilidade espacial da produtividade de trigo no sistema de plantio direto.

Abstract

In the study of regionalized variables the geoestatistics is an analysis method for problems where the data are georeference. This work had as objective to verify the validity information of the productivity thematic map of wheat culture generated for the use of ordinary kriging interpolation techniques. For this the seek area of 13,7 ha was divided in nine parts that they had been harvested mechanically and weighed separately. The results had been compared with the obtained productivity map of one georeference sample of 50 points obtained of one 50×50 m sample grid and geostatistics techniques. The total production value of grains calculated in the generated map for samples it was of 1,6% greater that the total production measured by the measured by weighing method, showing that the ordinary kriging interpolation it was an excellent method for esteem the productivity.