Efeito de fertilizantes minerais em cultivares de Glycine max produzidas no município de Areia-PB

Abstract

Soybean (Glycine max L.) is the main agricultural crop in Brazil, being planted in large areas, with high technicality index, reaching high yields and as a result of the high demand it becomes a product of high added value and easy commercialization. Currently there are a variety of varieties and cultivars available in the market, which aim to meet the needs of producers as well as to adapt to the most varied regions. The objective of this study was to evaluate the effect of mineral fertilizers applied in foliar spraying at different phenological stages of soybean crop on crop yield components. The experiment was carried out from September 2018 to January 2019, at the Chã de Jardim Experimental Station, an area belonging to the Department of Phytotechnics and Environmental Sciences of the Center for Agricultural Sciences of the Federal University of Paraíba. The experimental design was randomized blocks, distributed in a 2 x 4 factorial scheme with 3 replications, totaling 24 plots. The following yield components were analyzed: plant height, first pod insertion height, number of pods per plant, one thousand seed mass and yield. It was observed that there was a significant effect at 1% probability by the F test for varieties with respect to the first pod insertion height, plant height and the mass of one thousand seeds. No significant effect was observed for fertilizers or for the interaction between varieties and fertilizers. The low precipitations observed during the experiment were determinant for the reduction of the productivity of the studied varieties.