Variabilidade temporal de dados climáticos, influenciando a produtividade de soja

Abstract

This work aims to study the temporal variability of climatic variables and their influence on soybean yield in the city of Ponta Porã, MS, Brazil. The climatic data covered the time period between 2005 and 2015, and refer to the monthly total rainfall expressed in water depth (mm), monthly averages of air temperature (° C), humidity relative humidity (%), wind speed (km h-1) and radiation (MJ / m2 / day), being obtained by the National Institute of Meteorology (INMET). The data were submitted to descriptive statistical analysis, with the purpose of verifying the variability of the attributes and characterizing the probability distribution and the geostatistical analysis, in order to verify the existence and quantify the degree of temporal dependence between the observations, distributed in months years. Wind velocity was the one with the greatest climatic stability. It was verified with this work that the study of climatic variability contributes to a better understanding of the interaction between climatic conditions and soybean yield. In this way it is suggested to realize the sowing in times of less climatic risk for the culture.