Introduction Drought situations affect weed control.
Herbicides breakdown more slowly than normal under dry soil conditions.
Therefore, an additional margin of safety should be exercised while following both rotational crop restrictions and wait periods after prior herbicide applications. The spectrum of weeds may also be different due to changes in soil moisture levels resulting in more drought-tolerant weeds in the fields. This document addresses some of the concerns about herbicide residues in soil following a drought situation, and their possible solutions. Bear in mind, however, that there is perhaps no real solution. Instead we will have to work towards minimizing losses.