ryegrass

Understanding the potential for resistance evolution to the new herbicide pyroxasulfone: field selection at high doses versus recurrent selection at low doses

Roberto Busi weighs seeds in lab

Pyroxasulfone is a new pre-emergence herbicide that provides effective control of Lolium rigidum, including populations with evolved resistance to multiple herbicide modes of action.

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Towards large-scale prediction of lolium rigidum I. Can climate be used to predict dormancy parameters?

Lolium rigidum (annual or rigid ryegrass) is a widespread annual weed in cropping systems of southern Australia. Seeds exhibit dormancy at dispersal and require a period of dry after-ripening to release dormancy, before germination and emergence can occur.

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

This study investigated a possible link between seed dormancy and herbicide resistance status of Lolium rigidum (annual or rigid ryegrass). Mature seeds were collected from 406 populations across the 14-million hectare grain belt of southern Western Australia.

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