Skipping a spray operation reduces the selection pressure that causes resistant weed populations to develop. Resistance to herbicides in annual ryegrass in nsw in 2020/2021 a survey of resistant weeds was conducted across the grain growing regions of australia. Recommended herbicide resistance management strategies and tactics have evolved over the past 50 years through cumulative research and experience and have been regularly. The new paradigm is that weed populations need to be managed to ensure a decrease in the weed seedbank over time and the actions taken now to reduce the weed seedbank will affect the profitability of crops for years to come
OPEN
