Evaluation of combinations of paraquat plus photosystem II-inhibiting herbicides for controlling failed stands of maize (Zea mays)

► Maize control was generally greater and more consistent with the addition of metribuzin or diuron to paraquat than with atrazine, even though atrazine did often improve control over paraquat alone. ► Applying paraquat at sunset did improve control over applications made near sunrise, but a PSII-inhibiting herbicide was still needed with paraquat to maximize control of maize. ► Undesirable maize plants can be effectively controlled with combinations of paraquat plus PSII-inhibiting herbicides when applied no later than the V4 stage of maize, and applications in close proximity to sunset can further improve control.