To evaluate herbicide options for residual control of Phalaris paradoxa in chickpea.

Paradoxa grass (Phalaris paradoxa) is an important weed of winter crops, particularly in seasons when wet conditions occur in late autumn and early winter. Improved understanding of the potential for residual paradoxa grass management is needed due to increasing levels of Group 1 (A) and Group 2 (B) post-emergent herbicide resistance.

This project evaluated a range of residual herbicides with existing registrations for use in chickpeas. Three of the herbicides have paradoxa grass/ canary grass control claims when applied at planting in chickpea: Sakura, TriflurX and Rustler, whilst Terbyne Xtreme has a suppression claim. A Group 13 herbicide not registered in chickpea was included as it has a paradoxa grass suppression claim in wheat.