Selection pressure alters weed dynamics

When this pressure increases, the proportion of individuals that survive chemical applications also grows, which favors the persistence of resistant characteristics. Resistance, according to the committee, is an evolutionary process accelerated by the continuous use of herbicides with the same mechanism of action and by the lack of adequate management strategies. Aspects related to the herbicide itself, such as efficiency, persistence, and specificity, can further intensify this scenario. In this context, integrated practices become fundamental to reduce risks. The guidance is to know the resistance mechanisms present in the area, alternate mechanisms of action throughout the applications, follow recommended doses, and respect the windows of use. The combination of chemical, mechanical, and cultural actions is pointed out as a way to avoid or delay the advancement of resistant plants and to preserve the available technologies. ...