Investigating the current herbicide resistance status of problem weeds in northern cotton farming systems

Abstract

Key findings •• Understanding key drivers and processes in controlling awnless barnyard grass (Echinochloa colona), feathertop Rhodes grass (Chloris virgata), fleabane (Conzya bonariensis L), windmill grass (Chloris truncata) and sowthistle (Sonchus oleraceus L). •• Investigating the impact on weed control of pupae busting and the potential impact of removing this tillage operation. •• Demonstration of integrated weed management principles, including controlling ‘escape’ weeds and the impact on seed set, to encourage industry to adopt the research outputs. •• Glyphosate resistance is emerging in cotton farming systems.