CARACTERÍSTICAS DE PRODUÇÃO DA SOJA (Glycine max (L.) Merril ) cultivar TMG 1182-RR em função de herbicidas pós-emergentes

Abstract

Soybean [Glycine max (L.) Merrill] is an oleaginous of great economic importance in the production chain, cultivated in Brazil since the 19th century, bringing development to the different regions of the country. The objective of this study was to evaluate the production components of soybean TMG 1182-RR under influence of active principles in weed control. The experiment was carried out in an experimental area located in the Jardim de Chia, belonging to the Center of Agricultural Sciences (CCA), Campus II of the Federal University of Paraíba (UFPB), located in the city of Areia - PB. Soybean seeds were tested in the CCA-UFPB seed laboratory, with a germination rate of 83%, seeded manually. The experimental design was distributed in randomized blocks, with eight treatments and three replicates. The experimental units consisted of 3 rows of 4 meters (m) with cultivated soybeans, spaced 0.6 m between the rows, containing 30 seeds per linear m, and spacing 1 m between the blocks. The treatments were carried out by combined dosages at 15 and 18 days after emergence (DAE) of the active ingredients (ia) phenoxaprop-β-ethyl and bentazon followed by weed treatments (T7) and an absolute control (T8), with total weed interference. Data were analyzed using analysis of variance using the F test and the means compared by the Tukey test at 5% probability. The production components evaluated were plant height, height of insertion of the first pod and productivity. It is concluded that the treatment five stand out the other treatments, being indicated for later study in the area on application in the soybean crop.