Field experiments to assess phenotypic and agronomic characteristics, and environmental interactions of MON 87429 corn, compared to conventional control corn and commercial references, were conducted during the 2018/2019 harvest at six sites in Brazil (Vertuan, 2019b). The experimental stations where this study was conducted were: Luís Eduardo Magalhães, BA (BALM); Dourada Waterfall, MG (MGCH); Smile, MT (MTSO); Rolândia, PR (PRRO); Don't Touch Me, RS (RSNM); and Santa Cruz das Palmeiras, SP (SPSD). The identities of MON 87429 corn and conventional control corn were confirmed by PCR analysis and commercial references were identified through the manufacturer's label. Thus, the presence of pat, dmo, ft_t and cp4 epsps genes was duly certified in MON 87429 corn. The experimental design used was randomized blocks with four replications. MON 87429 corn (test), conventional control corn (control) and commercial references (references) were evaluated at each site. The results obtained from agronomic and phenotypic characteristics of MON 87429 maize were compared to the results obtained from conventional control maize per site and combined. Commercial hybrids (commercial references) represented the natural variability of the parameters evaluated in the studies. The collected data were submitted to statistical analysis (t test) to compare the averages of MON 87429 corn in relation to conventional control corn, at a significance level of 5%. The phenotypic observations and environmental interactions evaluated in this study demonstrate that MON 87429 maize does not differ consistently from conventional control maize, and that the significant differences found were occasional and do not represent characteristics that constitute potential environmental risks and potential increase in the persistence of the crop as a plant. weed. Based on this information, it can be concluded that MON 87429 corn is as safe as the conventional control corn used in the study for the parameters evaluated.