CONTROLE DE PLANTAS DANINHAS NA CULTURA DA SOJA (Glycine max L.) UTILIZANDO PADRÃO FAZENDA E FLEXSTAR GT

Abstract

Soybean (Glycine max L.) is one of the most widespread crops worldwide, a crop that requires care, with chemical or biological controls to eliminate problems that will affect its productivity. Weeds are an example of a problem in this crop, they will compete with the crop of interest for various elements necessary for its development, such as: Light, nutrients, water, etc. Therefore, there are several invasive plants that are creating resistance to the standard farm management of Glyphosate, and therefore other products are needed to control these invasives. Therefore, the present work aimed to show in the field the results of weed control using FLEXSTAR GT (Fomesafen + Glyphosate) and comparing it with GLYPHOSATE in a randomized design. The test was carried out at the Instituto Federal Campus Morrinhos in an open field with 5 treatments, where T1 was a control in the bush, T2 was Flexstar gt in a single application with 3 liters/ha, T3 was Flexstar gt with two applications of 2 liters/ha in each application, T4 was with Glyphosate in a single application at 1.5 Liters/ha and T5 was a weeded control. The parameters used to extract results were visual analysis of weed control, visual analysis of phytocity, chlorophyll analysis using the Falker portable Clorofilog and finally the productivity of pods per plant and grains per pods. The results of the analyzes carried out during the experiment can show that the application in the T2 and T3 treatments, where the Fomesafen molecule was in its composition, had 30% of Phyto in the applications and in the treatment with Glyphosate alone it had 10%, even soy. being RR, however, this did not directly interfere with productivity, due to the plasticity of the culture, in terms of weed control, 100% control of invasive plants was observed in T3 with two inputs. Therefore, the treatment with two Flexstar Gt inputs resulted in greater productivity compared to other treatments and thus the use of this product can be a good tool when there are plants resistant to the glyphosate molecule.