Risk assessment and preventive IWM strategies for herbicide resistance in the diverse farming systems in the Northern Region

Abstract

The weeds identified at risk of developing glyphosate# resistance in the northern grains region include common sowthistle and summer grasses, as well as several other summer weeds in central Queensland (QLD) and a mix of summer and winter weeds in southern QLD and northern New South Wales (NSW). In this project, preventive strategies were tested in long term field experiments, and specific tactics were tested in 12 short term trials. The proposed strategies to conserve glyphosate susceptibility involved a variety of chemical and non-chemical alternatives to glyphosate. Findings were communicated to the industry in six newsletters, 61 papers and articles in rural media, and 23 presentations. These strategies have been published in three regional specific brochures.