Space variability of soybean seed quality and chemical attributes of the soil in a production field in the Cerrado

Danielle Helena Müller

Abstract


The objective of this study was to evaluate the spatial variability of soybean seed quality and soil chemical attributes in a field of production. The data of the experiment were collected in 138 georeferenced points in a soybean production property located in the municipality of Santo Antônio de Leverger - MT. In the soil were evaluated the content of phosphorus, potassium, calcium, magnesium, organic matter (OM); pH, cation exchange capacity (CEC) and base saturation (V%). In the seeds were evaluated their productivity, mass of a thousand seeds, size, germination, bedrock emergence, electrical conductivity, accelerated aging and tetrazolium. The data were submitted to descriptive and geostatistical analysis and the adjusted semivariograms parameters were used to elaborate spatial distribution maps of the variables analyzed. After analysis, it is concluded that there is spatial variability in the evaluated attributes in the seeds and in the soil, indicating that the area for soybean seed production can be divided into management zones, which allows the definition of areas to be harvested and discarded within a field of seed production.


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