Towards large-scale prediction of Lolium rigidum emergence. II. correlation between dormancy and herbicide resistance levels suggests an impact of cropping systems

M J OWEN* , P J MICHAEL , M RENTON* §, K J STEADMAN– & S B POWLES* *Australian Herbicide Resistance Initiative, University of Western Australia, Crawley, WA, Australia, School of Agriculture and Environment, Division of Science and Engineering, Curtin University of Technology, Northam, WA, Australia, School of Plant Biology, University of Western Australia, Crawley, WA, Australia, §CSIRO Sustainable Ecosystems, Floreat WA, Australia, and –University of Queensland, School of Pharmacy and School of Biological Sciences, Brisbane, QLD, Australia