Summary Note

Mechanical cultivation is a useful tool in controlling herbicide-resistant Italian ryegrass individuals in a rainfed wheat system but is only about half as effective as Axial in reducing overall pressure from Italian ryegrass (expressed as a percentage of total groundcover). Growers should consider multiple approaches (chemical and mechanical) and integrate IPM strategies to reduce the spread of resistance among Italian ryegrass individuals. 

Background

Italian ryegrass (Lolium multiflorum)  has been shown to be a persistent weed for growers in rainfed winter grass  systems. It is particularly problematic due to its...