Variability of mass and content of mineral elements in grains of the common bean cultivar Pérola
The cultivar Pérola is the most widely bean cultivar cropped. In the market, it is a reference in grain size, which is related to its mass, which, in turn, is influenced by the growing conditions. The objective was to quantify the 100-grain mass and the contents of mineral elements in the common bean cultivar Pérola, coming from the municipality of Cristalina, Goiás. It was selected 18 different areas in the city, under center pivot irrigation, where 86 samples of grains were collected during the crop harvest. The data were submitted to univariate statistical analysis, calculating maximum and minimum values, averages, amplitude of variation and coefficients of variation. It was determined the values of Pearson correlation between the contents of mineral elements in the grains. The 100-grain mass had wide range of values, from 17.30 to 33.50 grams. The composition of minerals in beans was, in descending order, N, K, P, Mg, Ca, S, Fe, Zn, Mn, B, Cu, Mo, Co. There was a significant correlation between the mineral elements present in beans, highlighting the correlation of K with S, Cu, Fe, B, Mn, Co and Mo.