Peso de grãos de soja em função de diferentes manejos na Região de Belterra - Pa

Abstract

To achieve high productivity of a given crop, the best technique is to manage the crop to obtain the maximum of each management component, provided that it affects the others as little as possible. The thousand-grain weight (GWP) is a characteristic that can be used for different purposes, among them the comparison of the quality of different batches of grains, determination of crop yields and even for calculating seeding density. Therefore, the objective of this work was to evaluate the weight and productivity of pre-harvest soybeans produced in the metropolitan region of Santarém, in the state of Pará, in the 2020/2021 harvest. Samples of cultivars produced by several companies were cultivated and collected in an experimental area called Área ELO of the company Confiança Agronegócios and associated producers, located in the municipality of Belterra - PA. To evaluate the weight and productivity of these materials, the final populations, the thousand-grain weight (PMG) and the productivity calculation were analyzed. The experimental design adopted was in randomized blocks (DBC), with four replications, with the averages compared by Tukey's test, at a 5% probability level. The thousand-grain weight (PMG) values showed significant differences between their averages, as well as the average yield values, it was also possible to verify differences between cultivars. In the relationship between the final means of PMG and productivity, they demonstrated that few cultivars had a correlation between the means of these two values. It can be concluded that the average GMP and productivity data had few discrepancies among themselves statistically, since most cultivars obtained similar and satisfactory values. Key