Undergraduate Research Projects2009Joanne Shaddick is undertaking her fourth year research project at WAHRI and is investigating aspects of gene flow in Roundup Ready Canola. Supervisors: Dr Roberto Busi and Prof Stephen Powles
2008Karrie Stratford: Investigated synergistic herbicide combinations to
improve herbicide efficiency with lower application rates to control weed
populations. Supervisors: Dr Michael Walsh and Prof Stephen Powles Robert Alderman: Research in the effect of karrikinolide on a weed seed bank and its ability to stimulate germination of Avena fatua, Brassica tounefortti and Raphanus raphanistrum. Supervisors: Dr Jason Stevens, Dr Michael Renton and Prof Stephen Powles
2007 Kent Stone: Investigation of possible non-target site atrazine resistance; and using HPPD inhibiting herbicides to overcome target site atrazine resistance in wild radish
Supervisors: Michael Walsh and Stephen Powles Meagan Pearce: An investigation of the resistance mechanism/s in diflufenican resistant wild radish (Raphanus raphanistrum)
Supervisors: Michael Walsh and Stephen Powles
2006
Jason Ellerton: Processing chaff residue during the harvest operation as an alternative to chaff carts for preventing the return of weed seed to the soil seed bank
Supervisors: Stephen Powles and Michael Walsh Tarnya Fowler: The bio-economic assessment of KIH-485 to determine it’s appropriateness in providing control of annual ryegrass (Lolium rigidum) in Australian wheat production systems
Supervisors: Michael Walsh and Bronwyn Crowe Natalie Maguire: Evaluation of the combined effects of wheat competition and auxin analog herbicides on auxin analog resistant wild radish (Raphanus raphanistrum)
Superisors: Michael Walsh Jared Nelson: A proline to serine substitution at position 197 in ALS gene confers resistance to the ALS-inhibiting herbicides in Hordeum leporinum biotypes
Supervisors: Qin Yu and Stephen Powles Matt Willis: Effect of increasing soil pH on the growth and development of wild radish (Raphanus raphanistrum)
Supervisors: Michael Walsh and Andrew Rate
2005
Emma Glasfurd : Glyphosate and paraquat resistant annual ryegrass reduces crop-topping efficacy.
Supervisors: Kathryn Steadman and Michael Walsh
2004
Four UWA students graduated in this year after completing their undergraduate research projects with WAHRI in 2004. Their research topics, and supervisors are listed below: Debra Eaton : Timing of spray-top treatment determines annual ryegrass (Lolium rigidum Gaud.) fitness
Supervisors: Kathryn Steadman, Julie Plummer and David Ferris James Eyres : Ryegrass and glyphosate rate creep
Supervisors: Paul Neve and Stephen Powles Natalie Hogg : Farm-level variation in seed dormancy and herbicide resistance of annual ryegrass (Lolium rigidum)
Supervisor: Kathryn Steadman and Stephen Powles Justin Laycock : New use for an old herbicide: Potential for developing Oxyflourfen resistant canola
Supervisors: Wallace Cowling and Michael Walsh
2003
Three UWA students graduated in this year after completing their undergraduate research projects with WAHRI in 2003. Their research topics, and supervisors are listed below: Ben Wilson : Investigation of herbicide degradation characteristics in three WA soil types.
Supervisor: Michael Walsh Bradley Westphal : Characterisation of an MCPA resistant wild radish population.
Supervisors: Michael Walsh and Stephen Powles Bridget Kennedy : The impact of summer rain on annual ryegrass seed dormancy.
Supervisors: Kathryn Steadman and Julie Plummer
2002 Ben Parkin : Herbicide resistance profile of two wild radish populations (Raphanus raphanistrum)
Supervisors: Dr Michael Walsh and Professor Stephen Powles Clare Smith : Herbicidal seed treatments of wheat for the control of ryegrass in minimum till systems
Supervisors: Dr Michael Walsh and Professor Stephen Powles Darren Chitty : The removal and destruction of ryegrass seeds during harvest as facilitated by the chaff top
Supervisors: Dr Michael Walsh Jemma Sadler : Characteristaion of gylphosate resistance in a WA Lolium rigidum biotype
Supervisors: Dr Paul Neve and Professor Stephen Powles Debbie Allen : Farmers perceptions of herbicide resistance mobility)
Supervisors: Dr Rick Llewellyn and Dr Greg Hertzler Gavin Bignell : Understanding dormancy release and germination in annual ryegrass (Lolium rigidum)
Supervisors: Dr Michael Walsh and Professor Stephen Powles
2001
Ten UWA students graduated in 2001 after completing their undergraduate research projects with WAHRI. Their research topics, supervisors and current occupations are listed below: Catherine Borger: Spatial variation of Seed predation in a Cultivated Field.
Supervisors: Dr Helen Spafford-Jacob and David Minkey
Currently: Department of Agriculture, Merredin Jerome Critch: Controlling Annual Ryegrass in Post-Emergent Wheat using Sprayseed®: A Viable Method for Resistance Management. Supervisors: Dr Julie Plummer and Dr Aik Cheam
Currently: Family farm enterprise Tim Cusack: Autumn Tickle Methodology for optimal stimulation of Annual Ryegrass emergence.
Supervisors: Dr Kathryn Steadman and Dr Abul Hashem
Currently: International Travel Richard Devlin: Evaluating the potential of herbicides to be used as summer seedicides.
Supervisors: Dr Michael Walsh and Professor Stephen Powles
Currently: M. Lamond Agricultural Consultancy, York Tracy Gillam: Grower perception of herbicide resistance to group A herbicides in annual ryegrass (Lolium rigidum).
Supervisors: Professor Stephen Powles and Rick Llewellyn
Currently: WANTFA, Northam Pippa Michael: The effect of timing of cultivation on the stimulation of annual ryegrass (Lolium ridigum) emergence.
Supervisors: Dr Kathryn Steadman and Peter Newman
Currently: PhD student, WAHRI, UWA Suzie Muntz: Mechanisms and Patterns of Herbicide Resistance in Unselected Lolium rigidum Populations.
Supervisors: Dr Paul Neve and Professor Stephen Powles
Currently: Dept of Crop Science, University of Guelph, Canada Wayne Parker: Chaff collection is an effective method for control of wild radish (Raphanus raphanistrum).
Supervisors: Dr Michael Walsh and Professor Stephen Powles
Currently: Department of Agriculture, Geraldton Sally Porter: Multiple Herbicide Resistance in Three Populations of Wild Radish (Raphanus raphanistrum).
Supervisors: Professor Stephen Powles and Dr Michael Walsh
Currently: Agronomist, Wesfarmers, Corrigin Wade Longmuir: An Evaluation of the Potential Use of a Leafy Barley Variety in the Integrated Management of Annual Ryegrass (Lolium rigidum).
Supervisors: Robert Barrett-Lennard and Mr Rodger Boyd
Currently: Agronomist, Elders, Wagin | 
