-With the introduction in national agriculture of corn hybrids resistant to glyphosate herbicide, weed management, especially grasses, it was favored. However, volunteer maize plants coming from grains lost in mechanized harvesting can cause significant losses in crops subsequently sown, which has often been soybeans. Thus, the aim of this study was to evaluate the effect of different herbicides in controlling volunteer maize plants resistant to glyphosate herbicide. The experiment was conducted in the Brazilian municipality of Nova Xavantina, MT, between July and September 2014, in an area with a center pivot-type irrigation system. Grains of the F2 generation of AG 8061 VT PRO2 ® hybrid were used for assessments. The experimental design was randomized blocks with four replications. The treatments consisted in the application of thirteen different herbicides: haloxyfop-p-methyl 54 g a.i.
A Ruziziensis (Brachiaria ruziziensis) é uma forrageira com alta aceitação pelos animais, podendo ser indicada para bovinos de recria e engorda, fenação e integração lavoura pecuária. O capim capeta (Sporobulus indicus) uma planta daninha de difícil controle e indicadora de degradação de pastagens. Os experimentos foram conduzidos em delineamento de blocos casualizados (DBC) em esquema fatorial 2 x 4 sendo o primeiro fator com (0, 50, 100 e 150% da dosagem comercial, 200 g/ha) de imazetapir e o segundo fator com (0, 50, 100 e 150% dosagem comercial, 5000 g/ha) de atrazina. Foi possível observar que a atrazina se mostrou eficiente em todas as avaliações, destacando-se a dosagem de 50% da recomendação comercial por possuir uma melhor eficiência e uma menor fitotoxidez na B. ruziziensis.
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