Efeito de inoculantes e adubação em cultivar de soja produzida no Município de Areia - PB.

Abstract

Soybean (Glycine max L) is one of the world's most widely used products, due to its different forms both for human consumption and for animal consumption. This growth is attributed by the technological advances in all the productive chain and in its genetic improvement that develop varieties more productive and resistant to diverse conditions, as well as the increase of the use of inoculants in the biological fixation of nitrogen and decrease in the costs of mineral fertilization for the culture. The objective of this work was to evaluate the production components of soybean cultivar TMG 1182 submitted to peat and liquid inoculation, and the application of different doses of phosphorus (20; 20 and 40 kg of P2O5.ha-1) and potassium (20; 50 and 60 kg of K2O.ha-1). The experiment was installed from September 2017 to January 2018, in an experimental area belonging to the Agricultural Sciences Center of the Federal University of Paraíba, located in the city of Areia-PB. The experimental design consisted of a factorial 2 x 3 consisting of two types of inoculants and three dosages of phosphorus and potassium, conducted in randomized blocks, with four replications totaling 24 plots in an area of 10 x 12 meters. The experimental units were composed of three 3m lines, spaced at 0.60m. The useful area was formed by the central line, where data were collected on the evaluated characteristics: plant height (cm), height of insertion of the first pod (cm), number of pods per plant, mass of one thousand seeds (g) and productivity (kg.ha-1). No significant effect was found. In absolute values the liquid inoculant associated with dose 1 (20 kg of P2O5.ha-1 and 20 kg of K2O.ha-1) was shown to be superior in most of the production components, achieving higher productivity.