Influência da aplicação de Glyphosate e fertilizantes foliares na cultura da "soja RR"

Abstract

Currently soy is responsible for the protein ingested by humans and animals, it is also a source of oil and renewable materials for the industry. The importance of sustainability the levels of the knowledge the future of the tracts culture seident targets of promising researches. In spite of this, the aim of the study was to evaluate the effect of glyphosate herbicide and foliar fertilizers under the soil without nutrient deficiency. The experiment was installed in a randomized block design, with two doses of glyphosate and foliar fertilizers applied and mixed, in addition to a therapeutic control, totaling 21 treatments. As a measure of adequacy were phytotoxicity at 14 and 21 DAT, a grain mass and the yield of soybean grains. An ANOVA was performed and, when significant, a comparison of wellbore groups orthogonal contrasts was applied to all the variables for 6 soybean yield was also compared with the test dosages by the Scott-Knott test (p ≤0.05). DAT with an application of glyphosate, foliar fertilizers and an association of the two products. However, only a higher dose of glyphosate associated or not with leaf fertilizers generally reduced crop yield. In addition, the application of foliar and glyphosate-associated fertilizers in soils with adequate nutrients does not increase the grain mass or yield of soybean grains. It is concluded that a dose of glyphosate for a soybean must be respected and a foliar fertilization should be carefully studied to be indicated.