Decreased fitness of herbicide resistant weeds suggests options for management Case study, Alopecurus myosuroides (original) (raw)

This study investigates the fitness costs associated with herbicide resistance in two populations of Alopecurus myosuroides, focusing on comparisons between susceptible and resistant phenotypes. Experiments show no significant differences in competitiveness under controlled conditions, but indicate that resistance may entail lower fitness at sub-optimal temperatures and deeper sowing depths. These findings suggest management strategies that exploit fitness costs, including deeper soil cultivation and delayed sowing, to mitigate the prevalence of resistant weeds.