Contrarily, 2,4-D is an auxin mimic herbicide, which is also used in post-emergence applications for the control of non-grass weeds in grass cultures (Silva et al., 2007). The effect of hormesis in the application of sub-doses of this herbicide was evidenced, for example, by an increase in the leaf area in pequi plants (Tavares et al., 2017). Unlike glyphosate, the hormetic effect of 2,4-D appears to be more easily linked with its mechanism of action, specifically with the physiological effects of auxins on plants.