Newly-developed RIM models for integrated management of bromeand barley grass

摘要

Managing the weeds brome grass (Bro-nnis rigidus Roth) and barley grass (Hordeum spp.) in the cropping systems of southern Australia is becoming increasingly problematic due to evolving weed populations including the emerging risk of herbicide resistance. We use the new Brome RIM and Barley Grass RIM bio-economic models to demonstrate how an integrated weed management approach can be evaluated. As an example, we show the effect of increased crop competition on reducing reliance on selective herbicides, lowering weed seedbanks and increasing profitability over time.