CONTROL EFFICACY AND PHYTOSOCIOLOGICAL CHARACTERIZATION OF WEEDS AS A FUNCTION OF POST-EMERGENCE HERBICIDES APPLIED TO MAIZE

S Studies evaluating the effectiveness of herbicides on weed control, coupled with sustainability management system, are great importance. The present study aims to evaluate efficacy post-emergence applied maize while inferring treatments employing an ecological approach. experiment was installed in a randomized block design four replications. consisted application atrazine at dose 1500 g ha-1; + mesotrione 72 tembotrione 100.8 nicosulfuron 22.5 glyphosate ha-1 792.5 ha-1, addition weeded and infested control treatments. were 4 leaf stage maize. phytotoxicity assessed 7, 14, 21, 28 days after applying (DAT). In addition, phytosociological survey all plots carried out last assessment. Herbicides did not cause symptoms crop. However, associations promoted greater control. Despite being classified as one better effectiveness, association between atrazine, caused more significant reduction diversity plant community, alternative practices should be cropping fields avoid selection.