Publications
BOOKS
Herbicide Resistance and World Grains
Editors: Stephen B Powles & Dale L Shaner
CRC Press 2001
BOOK CHAPTERS
Vila-Aiub MM, Neve P & Powles SB. (2005) Fitness Costs of Evolved Herbicide Resistance. In: Encyclopedia of Pest Management. Editor: David Pimentel, Marcel Dekker Inc., New York. pp1-3
Preston, C. and Powles, S.B (2002). Mechanisms of multiple herbicide resistance in Lolium rigidum. In: Agrochemical Resistance: Extent, Mechanism & Detection. Eds. J.M. Clark & I. Yamaguchi, Oxford University Press. Pp. 150-160.
Diggle, A. and Neve, P.B. (2001). The Population Dynamics and Genetics of Herbicide Resistance - A Modelling Approach. Herbicide Resistance and World Grains. S. B. Powles and D. L. Shaner, CRC Press: 61-101.
Powles, S.B. and Bowran, D.G. (2000) Crop Weed Management Systems. In: Australian Weed Management Systems. Ed. B. Sindel. Publishers: R.G. & F.J. Richardson. Pp. 287-306.
Powles, S.B. and Preston, C. (1999) Herbicide Resistance: A case of rapid evolution. In: Plants in Action: Adaptation in Nature, Performance in Cultivation. Ed. B. Atwell, P. Kriedemann and C. Turnbull. Pub: Macmillan Education Australia. Pp. 607-613.
Reiger, M.A., Preston, C., Potter, T. and Powles, S.B. (1999) Gene flow from transgenic canola to wild radish – a model system to determine the risks. In: Lutman, P.J.W. (Ed) Gene Flow and Agriculture: Relevance for Transgenic Crops. British Crop Protection Council. Pp. 131-136.
JOURNAL ARTICLES
2006|2005|2004|2003|2002|2001|2000|1999|1998|1997
2008
Busi, R., Yu, Q., Barrett-Lennard, R., and Powles, S. (2008) Long distance pollen-mediated flow of herbicide resistance genes in Lolium rigidum. Theoretical and Applied Genetics (in press).
Duke, S.O., and Powles, S.B. (2008) Glyphosate: A once-in-a-century herbicide. Pest Management Science, 64, 319-325.
Llewellyn, R.S., D'Emden, F.H., Owen, M.J., and Powles, S.B. (2008) Has herbicide resistance led to higher weed densities? A study of rigid ryegrass (Lolium rigidum) in Western Australian cropping fields. Weed Science, (submitted)
Powles, S.B. (2008) Evolved glyphosate-resistant weeds around the world: Lessons to be learnt. Pest Management Science, 64, 360-365.
Goggin, D.E., Steadman, K.J., and Powles S.B. (2008) Green and blue light photoreceptors are involved in maintenance of dormancy in imbibed annual ryegrass (Lolium rigidum) seeds. New Phytologist, doi: 10.1111/j.1469-8137.2008.02570.x
2007
Borger, C.P.D., Yan, G., Scott, J.K., Walsh, M. and Powles S.B.(2007) Taxonomic diversity of Salsola (Chenopodiaceae) from south Western Australia revealed by random amplified microsatellite polymorphism (RAMP). Biological Journal of the Linnean Society (submitted)
Borger, C.P.D, Walsh M, Scott JK and Powles S.B. (2007) Tumbleweeds in the Western Australian cropping system: seed dispersal characteristics of Salsola australis. Weed Research, 47 (5), 406-414
Friesen, L.J. and Powles, S.B. (2007) Physiological and molecular characterization of atrazine resistance in a wild radish population (Raphanus raphanistrum). Weed Technology, 21, 910-914.
Llewellyn, R.S, Lindner, R.K., Pannell, D.J. and Powles, S.B (2007) Herbicide resistance and the adoption of integrated weed management by Western Australian grain growers. Agricultural Economics, 36, 121-128.
Michael P.J., Steadman K.J. and Plummer J.A. (2007) Seed development in Malva parviflora: onset of germinability, dormancy and desiccation tolerance. Australian Journal of Experimental Agriculture, 47 (6), 683-688
Owen, M.J., Walsh, M.J, Llewellyn, R.S. and Powles, S.B. (2007) Widespread occurrence of multiple herbicide resistance in Western Australian annual ryegrass (Lolium rigidum) populations. Australian Journal of Agricultural Research, 58 (7), 711-718
Pederson B.P., Neve P.B., Andreason C. and Powles S.B. (2007). Ecological fitness of a glyphosate resistant Lolium rigidum biotype: Growth, competitiveness and seed production along a competition gradient. Basic and Applied Ecology, 8, 258-268
Reboud, X., Majerus, N., Gasquez, J. and Powles, S.B. (2007) Chlamydomonas reinhardtii as a model system for pro-active herbicide resistance evolution research. Biological Journal of the Linnean Society. 91, 257-266
Yu, Q., Cairns, A. and Powles, S.B. (2007) Glyphosate, paraquat and ACCase multiple herbicide resistance in a Lolium rigidum biotype. Planta, 225 (2), 449-513
Yu, Q., Collavo, A., Zheng, M., Owen, M.J., Sattin, M. and Powles, S.B. (2007) Diversity of acetyl-coenzyme A carboxylase mutations in resistant Lolium populations: evaluation using clethodim, Plant Physiology, 145, 547-558
Yu, Q., Nelson, JK., Zheng, MQ., Jackson, M and Powles, SB. (2007) Molecular characterisation of resistanceto ALS-inhibiting herbicides in Hordeum leporinum biotypes. Pest Management Science, 63, 918-927
Vila-Aiub, M.M., Balbi, M.C., Gundel, P.E., Ghersa, C.M. and Powles, S.B. (2007) Evolution of Glyphosate-Resistant Johnsongrass (Sorghum halepense) in Glyphosate-Resistant Soybean, Weed Science, 55, 566-571
Walsh, M.J. and Newman, P. (2007) Burning narrow windrows for weed seed destruction, Field Crops Research, 104, 24-30
Walsh, M.J., Owen, M.J. and Powles, S.B. (2007) Frequency and distribution of herbicide resistance in Raphanus raphanistrum populations randomly collected across the Western Australian wheatbelt. Weed Research, 47 (6), 542-550
Walsh, M.J. and Powles, S.B. (2007) Management strategies for herbicide-resistant weed populations in Australian dryland crop-production systems. Weed Technology, 21 (2), 332-338
Walsh, M.J., Wilson, B.L. and Powles, S.B. (2007) Residual activity of three herbicides following exposure to summer-autumn conditions on the surface of three Western Australian wheatbelt soils, Plant Protection Quarterly, 22 (3), 113-120
2006
D'Emden, F. H and Llewellyn, R. S. (2006). No-till adoption decisions in southern Australian cropping and the role of weed management. Australian Journal of Experimental Agriculture, 46, (4), 563-569
D'Emden, F. H., Llewellyn, R. S. and Burton, M.P. (2006) Adoption of conservation tillage in Australian cropping regions: An application of duration analysis. Technological Forecasting and Social Change, 73 (6), 630-647.
Llewellyn, R.S. and Allen, D.M. (2006). Expected mobility of herbicide resistance via weed seeds and pollen in a Western Australian cropping region. Crop Protection, 25, 520-526
Michael, P., Steadman, K., and Plummer, J. (2006) Limited eco-clinal variation found in malva parviflora (small flowered mallow) across the mediterranean-climatic agricultural region of Western Australia. Australian Journal of Agricultural Research, 57 (7), 823-830.
Michael PJ, Steadman KJ and Plummer JA (2006). Climatic regulation of dormancy and emergence of diverse Malva parviflora populations from a Mediterranean-type environment. Seed Science Research 16 (3) 273-281.
Michael, P., Steadman, K., Plummer, J., and Vercoe, P. (2006) Sheep rumen digestion and transmissions of weedy malva parviflora seeds. Australian Journal of Experimental Agriculture, 46 (10), 1251-1256.
Powles, S.B. and Preston, C. (2006) Evolved glyphosate resistance in plants: Biochemical and genetic basis of resistance. Weed Technology, 20, 282-289.
Spafford Jacob H., Minkey D. M., Borger, P., Gallagher R.S. (2006) Variation in post dispersal weed seed predation in a cropping field. Weed Science, 54 (1), 148-155
Steadman KJ, Eaton DM, Plummer JA, Ferrris DG & Powles SB (2006) Late season non-selective herbicide application reduces Lolium rigidum seed dormancy and seed fitness as well as seed numbers. Australian Journal of Agriculture Research, 57, 133-141.
Walsh, M. and Minkey, D. (2006) Wild radish (Raphanus raphanistrum L.) development and seed production in response to time of emergence, crop-topping and sowing rate of wheat. Plant Protection Quarterly, 21 (1), 25-29
Zhang, X., Powles. S.B. (2006) Six amino acid substitutions in the carboxyl-transferase domain of the plastidic acetyl-CoA carboxylase gene are linked with resistance to herbicides in a Lolium rigidum population. New Phytologist, 172 (4), 636-645
Zhang, X., Powles. S.B. (2006) The molecular basis for resistance to aryloxyphenoxypropionate and cyclohexanedione acetyl co-enzyme A inhibiting herbicides in two ACCase target based resistant biotypes of L. rigidum. Planta, 223 (3), 550-557
2005
Delye, C., Zhang, X., Severine, M., Annick, M., Matejicek, A., Powles, S.B. (2005) Molecular basis for sensitivity to acetyl-coenzyme A carboxylase inhibitors in black-grass (Alopecurus myosuroides Huds.) Plant Physiology:137, 794-806
Llewellyn, R. S., Pannell, D. J., Lindner, R. K., Powles, S. B. (2005). Targeting key perceptions when planning and evaluating extension. Australian Journal of Experimental Agriculture. 45 (12) 1627-1633..
Maneechote, C., Samanwong, S., Zhang, X., Powles, S.B. (2005) Resistance to ACCase inhibiting herbicides in a Thailand population of Leptochloa chinensis L. Weed Research, 53, 290-295.
Monjardino, M., Pannell, D. J. and Powles, S. B. (2005) The economic value of glyphosate-resistant canola in the management of two widespread crop weeds in a Western Australian farming system. Agricultural Systems, 84 (3) 297-315.
Neve, P & Powles SB (2005) Recurrent selection with reduced herbicide rates results in the rapid evolution of herbicide resistance in Lolium rigidum. Theoretical and Applied Genetics, 110, 1154-1166. link
Neve P & Powles SB (2005) High survival frequencies at low herbicide use rates in populations of Lolium rigidum result in rapid evolution of herbicide resistance. Heredity, 95 (6), 485-492.
Preston, C., Soar, C.J., Hidayat,I., Greenfield K.M., and Powles, S.B. (2005) Differential translocation of paraquat in paraquat-resistant populations of Hordeum leporinum. Weed Research, 45, 289-295.
Vila-Aiub, M.M., Neve, P., Steadman, K.J., Powles, S.B. (2005) Ecological fitness of a multiple herbicide resistant Lolium rigidum population: Dynamics of seed germination and seedling emergence of target-site versus metabolism-based resistant and susceptible phenotypes. Journal of Applied Ecology, 42, 288-298.
Vila-Aiub MM, Neve P & Powles SB .(2005) Resistance costs of a cytochrome P450 herbicide metabolism mechanism but not an ACCase target site mutation in a multiple resistant Lolium rigidum population. New Phytologist, 167, 787-796.
Walsh, M.J., Minkey, D.M., Powles, S.B. (2005) Field evaluation of preseason applications of residual herbicides to control annual ryegrass (Lolium rigidum Gaud.). Plant Protection Quarterly, 20 (4), 133-139.
Weersink, A., Llewellyn, R.S., Pannell, D.J. (2005). Economics of pre-emptive management to avoid weed resistance to glyphosate in Australia. Crop Protection, 24 (7), 659-665. link to pdf
2004
D'Emden, F. H., Bell, G., and Llewellyn, R. S. (2004) Rural landholder attitudes towards the responsibilities and action for managing declared weeds in Western Australia. Plant Protection Quarterly 19(4) 147-150
Gallagher RS, Steadman KJ, Crawford AD (2004) Alleviation of dormancy in annual ryegrass seeds by hydration and after-ripening. Weed Science 52: 968-975
Llewellyn. R.S., Lindner, R.K., Pannell, D.J. Powles, S.B. (2004) Grain grower perceptions and use of integrated weed management. Australian Journal of Experimental Agriculture. 44(10) 993-1001 link
Monjardino, M., Pannell, D. J. and Powles, S. B. (2004) The economic value of haying and green manuring in the integrated management of annual ryegrass and wild radish in a Western Australian farming system. Australian Journal of Experimental Agriculture, 44, (12) 1195-1203
Monjardino, M., Pannell, D.J., Powles, S.B. (2004) The economic value of pasture phases in the integrated management of annual ryegrass and wild radish in a Western Australian farming system. Australian Journal of Experimental Agriculture, 44, (3), 265-271
Neve, P.B., Saldler, J, and Powles, S.B. (2004) Multiple herbicide resisitance in a glyphosate resistant (lolium rigidum) biotype. Weed Science, 52, 231-239.
Pannell, D., Stewart, V., Bennett, A., Monjardino, M., Schmidt, C. and Powles, S. (2004). RIM: A bio-economic model for integrated weed management. Agricultural Systems 79 (3): 305-325.
Soar, C.J., Karotam, J., Preston, C., Powles, S.B. (2004) Polyamines can inhibit paraquat toxicity and translocation in the broadleaf weed Arctotheca calendula. Pesticide Biochemistry and Physiology, 80: 94-105.
Steadman KJ (2004) Dormancy release during stratification in Lolium rigidum seeds is dependent on temperature, light quality and hydration status. Journal of Experimental Botany 55: 929-937.
Steadman KJ, Bignell GP, Michael PJ (2004) Stimulating dormancy release and emergence of annual ryegrass (Lolium rigidum) seeds using short-term hydrated storage in darkness. Australian Journal of Agricultural Research, 55, 787-795
Steadman KJ, Ellery AJ, Chapman R, Moore A, Turner NC (2004) Maternal temperature and rainfall influence seed dormancy characteristics in annual ryegrass (Lolium rigidum). Australian Journal of Agricultural Research, 55, 1047-1057.
Walsh, M.J., Powles, S.B., Beard, B., Parkin, B.T., Porter, S. (2004) Multiple herbicide resistance across four modes of action in wild radish (Raphanus raphanistrum L.) Weed Science 52: 8-13.
Walsh, M.J., Devlin, R, and Powles, S.B. (2004). Herbicides on the soil surface can endure intense summer conditions to control weeds at the commencement of a subsequent cool growing season. Weed Technology, 18, 228-235
Yu, Q, Cairns, A. Powles, S. B. (2004) Paraquat resistance in a population of Lolium rigidum. Functional plant Biology, 31(3), 247-254.
Yu, Q., Friesen, S., Zhang, X., Powles, S.B. (2004) Tolerance to acetolactate synthase and acetyl-coenzyme A carboxylase inhibiting herbicides in Vulpia bromoides is conferred by two co-existing resistance mechanisms. Pesticide Biochemistry and Physiology, 78, 21-30.
2003
Delye, C., Xhang, X., Chalopin, C., Michel, S., and Powles, S.B., (2003) An isoleucine residue within the carboxyl-transferase domain of multidomain Acetyl-Co A Carboxylase is a major determinant of sensitivity to aryloxyphenoxypropionate herbicides but not to cyclohexanedione herbicides. Plant Physiology, 132, 1716-1723
Diggle, A.J., Neve, P.B., and Smith, F.P. (2003) Herbicides used in combination can reduce the probability of herbicide resistance in finite weed populations. Weed Research, 43, 371-382
Lorraine-Colwill, D.F., Powles, S.B., Hawkes, T.R., Hollinshead, P.H., Warner, S.A.J., and Preston, C. (2003). Differential glyphosate translocation in a resistant Lolium rigidum population. Pesticide Biochemistry and Physiology. 74. 62-72.
Monjardino, M., Pannell, D. J. and Powles, S. B. (2003). Multi-species resistance and integrated management: A bio-economic model for the management of Lolium rigidum and Raphanus raphanistrum in Australian cropping. Weed Science, 51, 798-809.
Neve, P.B., Diggle, A.J., Smith, F.P., and Powles, S.B. (2003) Simulating evolution of glyphosate resistance in Lolium rigidum. I. Population biology of a rare resistance trait. Weed Research, 43, 404-417.
Neve, P.B, Diggle, A.J., Smith, F.P., and Powles, S.B. (2003) Simulating evolution of glyphosate resistance in Lolium rigidum. II. Past, present and future glyphosate use in Australian cropping. Weed Research, 43, 418-427.
Powles, S.B (2003) My View: Will glyphosate continue to aid world production? Weed Science, 51, 471.
Soar, C.J., Karotam, J., Preston, C., Powles, S.B. (2003) Reduced paraquat translocation in paraquat resistant Arctotheca calendula is a consequence of the primary resistance mechanism not the cause. Pesticide Biochemistry & Physiology, 76, 91-98.
Steadman KJ, Bignell GP, Ellery AJ (2003) Field assessment of thermal after-ripening time for dormancy release prediction in annual ryegrass (Lolium rigidum) seeds. Weed Research, 43, 458-465.
Steadman, K.J, Crawford, A.D, Gallagher, R.S (2003) Dormancy release in Lolium rigidum seeds is a function of thermal after-ripening time and water content. Functional Plant Biology, 30 (3): 345-352..
Yu, Q., Zhang, X.Q., Hashem, A., Walsh, M.J., and Powles, S.B. (2003) ALS gene proline (197) mutations confer ALS herbicide resistance in eight geographically separated Raphanus raphanistrum populations. Weed Science, 51, 831-838.
2002
Llewellyn, R. S. (2002). Contracting for Agricultural Extension: International Case Studies and Emerging Practices [Book Review]. Australian Journal of Agricultural and Resource Economics. 47, 144-146.
Llewellyn, R. S., Lindner, R. K., Pannell, D. J., and Powles, S. B. (2002). Resistance and the herbicide resource: perceptions of Western Australian grain growers. Crop Protection 21, 1067-1075.
Preston, C. and Powles, S.B. (2002) Evolution of herbicide resistance in weeds: Initial frequency of target site-based resistance to acetolactate synthase-inhibiting herbicides in Lolium rigidum. Heredity, 88, 8-13.
Reiger, M.A., Lamond, M., Preston, C., Powles, S.B., and Roush, R.T. (2002) Pollen-mediated movement of herbicide resistance between commercial canola fields. Science, 296 (5577), 2386-2388.
2001
Hashem, A., Dhammu, H.S., Powles, S.B., Bowran, D.G., Piper, T.J. and Cheam, A.H. (2001) Triazine resistance in a biotype of Raphanus raphanistrum in Australia. Weed Technology 15: 636-641.
Hole, S.J.W., McClure, N.C. and Powles, S.B. (2001) Persistence and management of enhanced bio-degradation in soil. Weed Research 41: 341-349.
Hole, S.J.W., McClure, N.C. and Powles, S.B. (2001) Rapid degradation of carbetamide upon repeated application to Australian soils. Soil Biology & Biochemistry 33: 739-745.
Llewellyn, R. S., and Powles, S. B. (2001). High levels of herbicide resistance in rigid ryegrass (Lolium rigidum) in the wheatbelt of Western Australia. Weed Technology 15, 242-248.
Lorraine-Colwill, D.F., Powles, S.B., Hawkes, T.T. and Preston, C. (2001) Inheritance of evolved glyphosate resistance in Lolium rigidum. Theoretical & Applied Genetics. 102: 545-550.
Rieger, M.A., Potter, T.D., Preston, C. and Powles, S.B. (2001) Hybridisation between Brassica napus L. and Raphanus raphanistrum L. under agronomic field conditions. Theoretical & Applied Genetics. 103, 555-560.
Walsh, M.J., Delaney, R.H., Groose, R.W. and Krall, J.M. (2001) Performance of Annual Medic Species (Medicago spp.) in Southeastern Wyoming. Agronomy Journal 93: 1249-1256.
Walsh, M.J., Duane, D.R., and Powles, S.B. (2001) High frequency of chlorsulfuron resistant wild radish (Raphanus raphanistrum L.) populations across the Western Australian wheatbelt. Weed Technology 15: 199-203.
2000
Matthews, N., Powles, S.B. and Preston, C. (2000) Mechanisms of resistance to acetyl-coenzyme A carboxylase-inhibiting herbicides in a Hordeum Leporinum population. Pest Management 56: 441-447.
1999
Boutsalis, P., Karotam, J. and Powles, S.B. (1999). Molecular basis of resistance to acetolactate synthase-ibhibiting herbicides in Sisymbrium orientale and Brassica tournefortii. Pesticide Science 55: 507-516.
Lorraine-Colwill, D.F., Hawkes, T.R., Williams, P.H., Warner, S.J., Sutton, P.B., Powles, S.B. and Preston, C. (1999) Resistance to glyphosate in Lolium rigidum. Pesticide Science 55: 486-503.
Reiger, M.A., Preston, C. and Powles. S.B. (1999) Risks of gene flow from transgenic herbicide-resistant canola (Brassica napus) to weedy relatives in southern Australian cropping systems. Australian Journal of Agricultural Research 50: 115-128.
Tardiff, R.J. and Powles, S.B. (1999) Effect of malathion on resistance to soil applied herbicides in a population of rigid ryegrass (Lolium rigidum). Weed Science 47: 258-261.
1998
Alizadeh, H. M., Preston, C. and Powles, S.B. (1998) Paraquat resistant biotypes of Hordeum glaucum from zero tillage wheat. Weed Research, 38, 139-142.
Boutsalis, P. and Powles, S.B. (1998). Seedbank characteristics of herbicide-resistant and susceptible Sisymbrium orientale. Weed Research 38: 289-393.
Powles, S.B., Lorraine-Colwill, D.F., Dellow, J.J. and Preston, C. (1998) Evolved Resistance to glyphosate in rigid ryegrass (Lolium rigidum) in Australia. Weed Science: 46: 604-607.
Preston, C. and Powles, S.B. (1998) Amitrole inhibits diclofop metabolism and synergiese diclofop-methyl in a diclfop-methyl-resistant biotype of Lolium rigidum. Pest. Biochem. Physiol 62: 179-189.
1997
Bowran, D. G., Hamblin, J. and Powles, S.B. (1997). Incorporation of transgenic herbicide resistant crops into integrated weed management systems. Commercialisation of Transgenic Crops: Risk, Benefit and Trade Considerations. G. D. McLean, Waterhouse, P.M, Evans, G. and Gibbs, M.J. Canberra, DPIE: 301-312.
Hall, L. M., Moss, S.R. and Powles, S.B. (1997). Mechanisms of resistance to aryloxyphenoxypropionate herbicides in two resistant biotypes of Alopecurus myosuroides: Herbicide metabolism as a cross-resistance mechanism. Pest Biochemistry & Physiology 57: 87-98.
Hole, S. J. W. and S. B. Powles (1997). Reduced efficacy and enhanced degradation of carbetamide after repeated application in Australia. Weed Research 37: 165-170.
Maneechote, C., Preston, C. and Powles, S.B. (1997). A diclofop-methyl-resistant Avena sterilis biotype with a herbicide-resistance Acetyl-coenzyme A caboxylase and enhanced metabolism of diclofop-methyl. Pesticide Science 9: 105-114.
Preston, C. and Powles, S.B. (1997) Light-dependent enhanced metabolism of chlorotoluron in a substituted urea herbicide-resistant biotype of Lolium rigidum. Planta 201: 202-208.
CONFERENCE PAPERS
Crop Updates:
2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998
Other Conferences
2008
Busi R and Powles SB (2008) Evolution of glyphosate resistance in annual ryegrass: Effects of cutting rates. In Weeds Updates, Agribusiness Crop Updates 2007, Department of Agriculture & Food, Western Australia.
2007
Busi R, Barrett-Lennard R and Powles S (2007) Pollen mediated gene flow of herbicide resistance can occur over long distances for annual ryegrass (Lolium rigidum): Results of two years with different meteorological conditions. In Weeds Updates, Agribusiness Crop Updates 2007, Department of Agriculture & Food, Western Australia p35
Maguire N and Walsh M (2007) Control of phenoxy resistant wild radish through the combined effects of wheat competition and phenoxy herbicides. In Weeds Updates, Agribusiness Crop Updates 2007, Department of Agriculture & Food, Western Australia p13
Minkey D and Hashem A (2007) Alternative pre-emergent herbicides to trifluralin for annual ryegrass control.In Weeds Updates, Agribusiness Crop Updates 2007, Department of Agriculture & Food, Western Australia p48
Newman P and Walsh M (2007) Burn narrow windrows in the wind. In Weeds Updates, Agribusiness Crop Updates 2007, Department of Agriculture & Food, Western Australia p25
Owen M and Powles S (2007) Frequency of herbicide resistance in wild oat (Avena fatua) across the Western Australian wheat belt. In Weeds Updates, Agribusiness Crop Updates 2007, Department of Agriculture & Food, Western Australia p31
Si P, Walsh M and Sweetingham M (2007) Screening pulse germplasm for tolerance to alternate herbicides. In Lupins, Pulses and Oilseed Updates, Agribusiness Crop Updates 2007, Department of Agriculture & Food, Western Australia p118
Willis M and Walsh M (2007) Does liming to increase soil pH limit the growth and development of wild radish (Raphanus raphanistrum)? In Weeds Updates, Agribusiness Crop Updates 2007, Department of Agriculture & Food, Western Australia p19
Walsh M and Cornally D (2007) Efficacy of florasulam on chlorsulfuron resistant and susceptible wild radish populations in Western Australia. In Weeds Updates, Agribusiness Crop Updates 2007, Department of Agriculture & Food, Western Australia p15
2006
D'Emdem, F., Llewellyn, R., and Burton, M. (2006) Drivers of no-till adoption. In Weeds Updates, Agribusiness Crop Updates 2006, Department of Agriculture & Food, Western Australia p47
Llewellyn, R,. D'Emdem, F., Owen, M., and Powles, S. (2006) Are growers successfully managing herbicide resistant annual ryegrass? In Weeds Updates, Agribusiness Crop Updates 2006, Department of Agriculture& Food, Western Australia p43
Glasfurd, E., Walsh, M,. and Steadman, K. (2006) Does crop topping affect glyphosate and paraquat resistant annual ryegrass? In Weeds Updates, Agribusiness Crop Updates 2006, Department of Agriculture& Food, Western Australia p49
Powles, S,. Ferris, D,. and Addison, B. (2006) Tetraploid ryegrass for WA - Productive pasture phase AND defeating herbicide resistant ryegrass. In Weeds Updates, Agribusiness Crop Updates 2006, Department of Agriculture& Food, Western Australia p52
Walsh, M. (2006) Do herbicide resistant wild radish populations look different? In Weeds Updates, Agribusiness Crop Updates 2006, Department of Agriculture& Food, Western Australia p46
2005
Borger, C. (2005) Salsola tragus - What we know and what we want to know. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia.
Diggle, A., Neve, P., and Monjardino, M. (2005) The reality of cutting herbicides - does it cause resistance? Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia.
Llewellyn, R., Pannell, D., and Weersink, A. (2005) When does the double knock strategy pay? Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia.
Michael, P., vercoe, P., Steadman, K., and Plumer, J. (2005) Effect of sheep masticationand digestion on the transmission and viability of small flowered mallow (Malva parviflora L.) seeds. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia.
Newman, P., and Walsh, M. (2005) The art of burning. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia.
Owen, M., Walsh, M., and Powles S. (2005) Frequency of herbicide resistance in annual ryegrass populations across the WA wheat belt. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia.
Peltzer, S., Minkey, D., and Walsh, M. (2005) Ingest, incinerate or invert? The pros and cons of three weed seed removal tactics. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia.
Steadman, K. and Owen, M. (2005) When is annual ryegrass emergence optimised? Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia.
Walsh, M., Owen, M., and Powles S., (2005) Frequency of herbicide resistance in wild radish populations across the WA wheat belt. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia.
2004
D'Emden, F., and Llewellyn, R., (2004) Balancin no-till adaoption and sustainable weed management. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia.
Michael, P., Steadman, K., and Plummer, J. (2004) The effect of rumen digestion on small flowered mallow (Malva parviflora) germinability. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia.
Newman, P., and Walsh, M., (2004) How effectively can weed seeds be removed at harvest? Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia.
Owen, M., Neve, P., and Powles S., (2004) The potential for hybridisation to occur between canola and wild radish under field conditions. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia.
Young, K. and Steadman, K., (2004) Wild radish seed biology: Results from PhD research in Victora. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia.
Yu, Q., (2004) Mechanism of paraquat resistance in Lolium rigidum. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia.
2003
Allen, D., and Llewellyn, R., (2003) Herbicide resistance from over the fence: Mobility and management. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia
Chitty, D., and Walsh, M., (2003) The burning issues of annual ryegrass seed control. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia
Draper, A., and Llewellyn, R., (2003) Weed and herbicide management for long term profit: A workshop. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia
Ferris, D., (2003) No Sign of Chaff-cart resistant ryegrass! Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia Link to paper
Llewellyn, R., (2003) Putting a price on glyphosate resistance. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia
Michael, P., Steadman, KJ., and Plummer, J., (2003) The agro-ecology of Malva parviflora (small-flowered mallow). Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia
Neve, P., Diggle, A., Smith. P., and Powles, S. (2003) Conserving glyphosate susceptibility - modelling past, present and future use. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia
Neve, P. (2003) Implications of herbicide rates for resistance management. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia
Steadman, K.J., Bignell, G., and Ellery, A. (2003) Annual ryegrass seeds after-ripen faster during a hot summer. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia
Steadman, KJ., Ellery, J., and Peltzer, S. (2003) Annual ryegrass seedbanks: The good, the bad, and the ugly. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia
Steadman, K.J., and Owen, M.J., (2003) Removing dormancy in annual ryegrass seeds for early herbicide resistance testing. Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia
Walsh, M., Archer, D., Eklund, J., and Forcella, F. (2003) WEEDEM: A program for predicting weed emergence in Western Australia Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia
2002
Barrett-Lennard, R. and Critch, J. (2002) Haircutting: Does the number one cut work? Agribusiness Crop Updates, Australia, Department of Agriculture, Western Australia.
Barrett-Lennard, R. and Draper, A.D. (2002) RIM Survey feedback. Agribusiness Crop Updates 2002, Australia, Department of Agriculture, Western Australia.
Bent, M. J. M. and Draper, A.D. (2002) Living with ryegrass – trading off weed control and economic performance. Agribusiness Crop Updates 2002, Australia, Department of Agriculture, Western Australia
Cusack, T., Steadman, K. and Hashem, A. (2002). Role of tillage implements and trifluralin on the effectiveness of the autumn tickle for stimulating annual ryegrass emergence. Agribusiness Crop Updates 2002, Australia, Department of Agriculture, Western Australia.
Diggle, A., Smith, P., Neve, P.B., Flugge, F., Abadi, A. and Powles, S.B. (2002). Role for Roundup Ready(R) canola in the farming system. Agribusiness Crop Updates 2002, Australia, Department of Agriculture, Western Australia.
Draper, A. D. and Bent, M.J.M. (2002) Effects of historic input and product prices on choice of ryegrass management strategies. Agribusiness Crop Updates 2002, Australia, Department of Agriculture, Western Australia.
Draper, A. D. and Roy, B. (2002) Ryegrass RIM model stands the test of IWM field trial data. Agribusiness Crop Updates 2002, Australia, Department of Agriculture, Western Australia
Michael, P., Newman, P. and Steadman, K.J. (2002) Timing of autumn tickle is important for non-wetting soils. Agribusiness Crop Updates 2002, Australia, Department of Agriculture, Western Australia.
Minkey, D. (2002) Seeding rate, row spacing and herbicides for weed control. Agribusiness Crop Updates 2002, Australia, Department of Agriculture, Western Australia.
Monjardino, M., Pannell, D.J. and Powles, S.B. (2002) Multi-species RIM: An update. Agribusiness Crop Updates 2002, Australia, Department of Agriculture, Western Australia.
Neve, P., Diggle, A., Smith, P., Owen, M., Hashem, A., Preston, C. and Powles, S.B. (2002). Glyphosate resistance in WA and Australia: Where are we at? Agribusiness Crop Updates 2002, Australia, Department of Agriculture, Western Australia.
Neve, P., Owen, M., Hashem, A and Powles, S.B. (2002). We need your weeds: A survey of knockdown resistance in the WA wheatbelt. Agribusiness Crop Updates 2002, Australia, Department of Agriculture, Western Australia.
Owen, M., Gillam, T., Llewellyn, R.S., and Powles, S.B. (2002). A test for resistance testing. Agribusiness Crop Updates 2002, Australia, Department of Agriculture, Western Australia.
Walsh, M. and Parker, W. (2002). Wild radish and ryegrass seed collection at harvest: Chaff carts and other devices. Agribusiness Crop Updates 2002, Australia, Department of Agriculture, Western Australia
2001
Llewellyn, R.S. (2001) What causes WA grain growers to adopt IWM practices. Agribusiness Crop Updates, 2001 Weed Updates. Western Australian Department of Agriculture.
Monjardino, M., Pannell, D., and Powles, S. (2001) Multi-species RIM model. Agribusiness Crop Updates, 2001 Weed Updates. Western Australian Department of Agriculture.
Stewart, V. and Barrett-Lennard, R. (2001) Where to with RIM? Crop Updates 2001
2000
Diggle, A., Neve, P.B. and Powles, S.B. (2000) Managing herbicide resistance – the effect of local extinction of herbicide resistance genes. Agribusiness Crop Updates 2000, Department of Agriculture
Llewellyn, R. and Powles, S.B. (2000) Ryegrass resistance in Western Australia – where and how much? Agribusiness Crop Updates 2000, Department of Agriculture
Monjardino, M., Pannell, D. and Powles, S.B. (2000) The value of green manuring in the integrated management of ryegrass. Agribusiness Crop Updates 2000, Department of Agriculture
Neve, P.B., Diggle, A. and Powles, S.B. (2000) The double knock – the best strategy for conserving glyphosate susceptibility? Agribusiness Crop Updates 2000, Department of Agriculture
Neve, P., Hashem, A. and Powles, S.B. (2000) Knockdown resistance in the Western Australian wheatbelt. A proposed survey. Agribusiness Crop Updates 2000, Department of Agriculture
Powles, S.B., Neve, P.B., Lorraine-Colwill, D., Preston, C. (2000) Genetics and fitness of glyphosate resistant ryegrass. Agribusiness Crop Updates 2000, Department of Agriculture
Walsh, M., Boyle, C. and Powles, S.B. (2000) Investigation of suspected triazine resistant ryegrass populations for cross resistance and multiple resistance to herbicides. Agribusiness Crop Updates 2000, Department of Agriculture
Walsh, M., Duane, R. and Powles, S.B. (2000) Wild radish resistance survey. Agribusiness Crop Updates 2000, Department of Agriculture
1999
Barrett-Lennard, R. (1999) Knowing thine enemy – April irrigation to learn the weed seedbank challenge. Agribusiness Crop Updates 1999, Department of Agriculture
Loo, C. (1999) The Vulpia (silvergrass) complex in the Southern WA Agricultural Region. Agribusiness Crop Updates 1999, Department of Agriculture
Powles, S.B. (1999) Herbicide resistance in Western Australia. Agribusiness Crop Updates 1999, Department of Agriculture
Powles, S.B. and Cawthray, G. (1999) Weed seed infestation of crop seed. Agribusiness Crop Updates 1999, Department of Agriculture
1998
Powles, S.B. (1998) Why and what is the Western Weed Initiative (WWI)? Agribusiness Crop dates 1998, Department of Agriculture
Powles, S., Preston, C. and Bowran, D. (1998) Do reduced rates of herbicide lead to resistance. Agribusiness Crop Updates 1998, Department of Agriculture
OTHER CONFERENCES
Busi R. and Powles SB. (2008) Low glyphosate rates can rapidly lead to evolution of glyphosate resistance. 5th International Weeds Science Conference, Vancouver, Canada.
Walsh, M.J., Friesen, S., Powles, S.B. (2006) Frequency, distribution and mechanisms of herbicide resistance in Western Australian wild radish (Raphanus raphanistrum L.) populations: A review. Proc. 15th Australian Weeds Conference.
D’Emden, F.H., Llewellyn, R.S. and Burton, M.P. (2005). Adoption of conservation tillage in Australian cropping regions: an application of duration analysis. 49th Annual Conference of the Australian Agricultural and Resource Economics Society, Coffs Harbour, NSW.
Hatwell, B., Lindner, R.K., Llewellyn, R.S. (2005). Patent status and the distribution of benefits from herbicide use R&D. 49th Annual Conference of the Australian Agricultural and Resource Economics Society, Coffs Harbour, NSW.
Marsh, S.P., Llewellyn, R.S., Casimero, M.C., Cataquiz, G.C. (2005). Direct-seeding of rice and herbicide use in the Philippines: implications for weed management. 49th Annual Conference of the Australian Agricultural and Resource Economics Society, Coffs Harbour, NSW.
Minkey D.M., Spaffod Jacob, H.S. and Majer, J (2003) "The significance and variability of predation of weed seeds in an Agricultural landscape in Western Australia". 11th International symposium on the Biological Control of Weeds.
Minkey D.M., Spaffod Jacob, H.S. and Majer, J (2005). "Weed seed predation in Western Australian farmland". Proceedings of the Weeds Science Society of America meeting.
Minkey D.M., and Spafford Jacob, H.S. (2005) "Can Ants be used as a Biological Control Weapon against Annual Ryegrass?". WANTFA Annual Conference, 2005
D'Emden, F.H. and Llewellyn, R.S. (2004). No-till adoption and the weed management challenge In: Proceedings of the 14th Australian Weeds Conference, eds. BM Sindel & SB Johnson (Weed Society of New South Wales, Sydney) pp 597-600.
D'Emden, F.H. and Llewellyn, R.S. (2004) No-till adoption and cropping issues for Australian grain growers In: Proceedings of the 4th International Crop Science Congress, Brisbane, Qld.
Cartwright, M., (2004) Herbicide Resistance Management Extension in western Australia. In proceedings; 4th International Weed Science Congress, Durban, South Africa.
Gardner G, Spafford-Jacob H, Steadman KJ, van Klinken R (2004) Dormancy release and germination of four mesquite (Prosopis spp.) morphotypes naturalized in Australia. In Proceedings of the 14th Australian Weeds Conference, Wagga Wagga, NSW. Eds. Sindel BM, Johnson SB. RG & FJ Richardson, Meredith, Vic, p.566-570.
Michael, PM., Steadman KJ, Plummer JA (2004) Ecotypic variation with Malva parviflora (small flowered mallow) populations in the south-west agricultural region of Western Australia.In proceedings; 4th International Weed Science Congress, Durban, South Africa.
Michael PM, Steadman KJ, Plummer JA (2004) Effect of sheep mastication and digestion on the transmission, viability and germinability of mallow (Malva parviflora) seeds. In Proceedings of the 14th Australian Weeds Conference, Wagga Wagga, NSW. Eds. Sindel BM, Johnson SB. RG & FJ Richardson, Meredith, Vic, p.516-518.
Neve, P., (2004) Low rates of diclofop-methyl rapidly select for herbicide resistance in lolium rigidum. In proceedings; 4th International Weed Science Congress, Durban, South Africa.
Steadman KJ, Ellery AJ (2004) Environmental control of dormancy and after-ripening in annual ryegrass seeds. In Proceedings of the 14th Australian Weeds Conference, Wagga Wagga, NSW. Eds. Sindel BM, Johnson SB. RG & FJ Richardson, Meredith, Vic, p.527-530.
Vila Aiub, M., (2004) Resistance to Diclofop-methyl in Lolium Multiflorum: Selection history and tradeoffs between resistance and growth. In proceedings; 4th International Weed Science Congress, Durban, South Africa.
Vila Aiub, M., (2004) Ecological fitness in a multiple resistant Lolium rigidum population: Seed dormancy, germination and seedling establishment in metabolism - vs. target-site based-resistant individuals. In proceedings; 4th International Weed Science Congress, Durban, South Africa.
Walsh, M., (2004) Multiple Herbicide Resistance in Wild Radish (Raphanus Raphanistrum) populations in Western Australia.In proceedings; 4th International Weed Science Congress, Durban, South Africa.
Llewellyn, R., (2004) Meeting the new herbicide resistance challenges. Grains Research Update, Charles Sturt University, Wagga Wagga, Australia, pp.85-87
Llewellyn, R. S. (2003). Grain grower perceptions of the economic value and longevity of glyphosate. In Proceedings 11th Australian Agronomy Conference, Geelong,Victoria.
Llewellyn, R. S., Lindner, R. K., Pannell, D. J., and Powles, S. B. (2003). Effective information and the influence of an extension event on perceptions and adoption. Paper presented at the 47th Annual Agricultural and Resource Economics Society Conference, Fremantle, WA.
Llewellyn, R.S., Pannell, D.J. (2003). Identifying key farmer perceptions for planning and evaluation of extension. Proceedings 1st Australian Farming Systems Conference, Toowoomba Qld. September 7-10.
Archer, D., J. Eklund, M. Walsh, and F. Forcella. 2002. WEEDEM: a user-friendly software package for predicting annual ryegrass and wild radish emergence, p. 252-253, In H. S. Jacob, et al., eds. 13th Australian Weeds Conference: weeds "threats now and forever?", Sheraton Perth Hotel, Perth, Western Australia, 8-13 September 2002: papers and proceedings. Plant Protection Society of Western Australia Inc, Victoria Park, Australia.
Borger, C., Minkey, D and Spafford Jacob, H. (2002). Weed seed predation in a low rainfall cropping zone of Western Australia: spatial variation of weed seed predation. 13th Australian Weeds Conference, Perth, WA. PPS/CAWSS, 403.
Diggle, A., Smith, P., Neve, P. and Flugge, F. (2002) Comparing Roundup Ready and triazine tolerant canola in crop rotations accounting for variable conditions. Proceedings of the 13th Australian Weeds Conference, 8-13 September 2002, Perth, Western Australia, pp. 232-235.
Draper, A. and Roy, W. (2002) Validating ryegrass RIM using data from IWM field trials. Proceedings of the 13th Australian Weeds Conference, 8-13 September 2002, Perth, Western Australia, pp. 240-243.
Forcella, F., M. Walsh, D. Archer, S. Peltzer, R. Cousens, R. Chapman, R. Gallagher and S.Powles. 2002 Weed seedling emergence modelling: converting observations into equations for WEEDEM, p. 260, In H. S. Jacob, et al., eds. 13th Australian Weeds Conference: weeds "threats now and forever?", Sheraton Perth Hotel, Perth, Western Australia, 8-13 September 2002: papers and proceedings. Plant Protection Society of Western Australia Inc, Victoria Park, Australia
Llewellyn, R. S. (2002). What Australian growers will adopt in managing herbicide resistance. In 13th Australian Weeds Conference: papers and proceedings (H. Spafford Jacob, J. Dodd and J. H. Moore, eds.), pp. 680-684. R.G and F.J. Richardson, Meredith, Vic., Perth, WA.
Llewellyn, R. S., Lindner, R. K., Pannell, D. J., and Powles, S. B. (2002). Adoption of herbicide resistance management practices by Australian grain growers. Paper presented at the 46th Annual Agricultural and Resource Economics Society Conference, Canberra, ACT.
Minkey, D and Spafford Jacob, H. (2002). Weed seed predation in a low rainfall cropping zone of Western Australia: ant survey. 13th Australian Weeds Conference, Perth, WA. PPS/CAWSS, 413
Minkey D.M., Spaffod Jacob, H.S. (2002) "Seed Predation in Agricultural Fields". 13th Australian Weeds Conference, Perth, WA 13
Monjardino, M., Pannell, D.J. and Powles, S.B. (2002). Multi-species RIM: a bio-economic model for the integrated management of coexisting annual ryegrass and wild radish. 13th Australian Weeds Conference, Perth, WA. PPS/CAWSS, 236-239.
Monjardino, M., Pannell, D.J. and Powles, S.B. (2002). The value of Roundup-Ready canola in a multi-weed farming system. 46th Australian Agricultural and Resource Economics Society Conference, Australia.
Neve, P. and Powles, S.B. (2002) Ecological and population genetics of herbicide resistance: where to now? Proceedings of the 13th Australian Weeds Conference, 8-13 September 2002, Perth, Western Australia, p. 625-628.
Steadman, K.J (2002) A summary of dormancy in annual ryegrass seeds: dry after-ripening versus imbibition in the dark. 13th Australian Weeds Conference, Perth, WA. PPS/CAWSS, 468-470.
Walsh, M. 2002. Western Australian agronomic research and development for resistance management, p. 677-679, In H. S. Jacob, et al., eds. 13th Australian Weeds Conference: weeds "threats now and forever?", Sheraton Perth Hotel, Perth, Western Australia, 8-13 September 2002: papers and proceedings. Plant Protection Society of Western Australia Inc, Victoria Park, Australia.
Walsh, M., F. Forcella, D. Archer, and J. Eklund. 2002. WEEDEM: turning information into action, p. 446-449, In H. S. Jacob, et al., eds. 13th Australian Weeds Conference: weeds "threats now and forever?", Sheraton Perth Hotel, Perth, Western Australia, 8-13 September 2002: papers and proceedings. Plant Protection Society of Western Australia Inc, Victoria Park, Australia.
Krall, J.M., Walsh, M.J. and Powles, S.B. (2001) Multiple herbicide resistant weeds in Australian cropping systems are driving innovations. Proc. Western Society of Weed Science 56: 65-66.
Llewellyn, R.S. (2001) What farmers will and will not do to manage herbicide resistance. Genetically modified crops and herbicide resistant weeds: benefits/risks in producing food for the world (Japan-Australia Seminar), Utsunomiya University. p 44-45
Llewellyn, R.S., Lindner, R.K., Pannell, D.J. and Powles, S.B. (2001) Integrated weed management practices: perceived value and use by Australian grain growers. Weed Science Society of America (WASSA) Abstracts (14): 135
Llewellyn, R.S., Lindner, R.K., Pannell, D.J. and Powles, S.B. (2001) Perceptions and use of IWM practices: a survey of Australian graingrowers, Weed Science Society of America Meeting, Ed. J.W. Wilcut, (31): 145
Llewellyn, R. S., Lindner, R. K., Pannell, D. J., and Powles, S. B. (2001b). Herbicide resistance and the decision to conserve the herbicide resource: review and framework. Australian Agribusiness Review 9, Paper 4, link to paper
Llewellyn, R. S., Lindner, R. K., Pannell, D. J., and Powles, S. B. (2001c). Perceptions and use of IWM practices: a survey of Australian graingrowers. In “Weed Science Society of America Meeting” (J. W. Wilcut, ed.), Vol. 41, pp. 135. Weed Science Society of America, Greensboro, USA.
Llewellyn, R.S.,Lindner, R.K., Pannell, D.J. and Powles, S.B. (2001) Understanding the decision to adopt integrated weed management practices: a study of Western Australian graingrowers. 2001 WSSA Abstracts. Meeting of the Weed Science Society of America Meeting. 14: 136.
Llewellyn, R. S., Lindner, R. K., Pannell, D. J., and Powles, S. B. (2001d). Understanding the adoption of integrated weed management: a survey of Western Australian graingrowers. In “Weed Science Society of America Meeting” (J. W. Wilcut, ed.), Vol. 41, pp. 136. Weed Science Society of America, Greensboro, USA.
Monjardino, M (2001) Rediscovering the old ways. ACRES Australia
Monjardino, M., Pannell, D.J. and Powles, S. (2001) A multi-species bio-economic model for the management of annual ryegrass and wild radish. 45th Australian Agricultural and Resource Economics Society Conference.
Monjardino, M., Pannell, D., and Powles, S.B. (2001) Multi-species RIM model
Powles, S.B. (2001) An overview of resistance in Australia and worldwide; why there is so much resistance in Australia. Japan-Australia Seminar, Utsunomiya University. P 1-2.Llewellyn, R., Lindner, R., Pannell, D. and Powles. S. (2000) Adoption of integrated weed management to conserve the herbicide resource: review and framework. 44th Australian Agricultural & Resource Economics Conference, Sydney, NSW (SEA Working Paper 00/06)
Monjardino, M., Pannell, D.J. and Powles, S.B. (2000) A multi-species bio-economic model for the management of Lolium rigidum and Raphanus raphanistrum in Australian dryland agriculture. 3rd International Weed Science Congress: Global Weed Problems: Local and Global Solutions for the Beginning of the Century, Brazil, South America
Lemerle, D., Blackshaw, R., Potter, T., Marcroft, S. and Barrett-Lennard, R. (1999) Incidence of weeds in canola crops across southern Australia. Proceedings of the Tenth International Rapeseed Congress.
Llewellyn, R. and Powles, S.B. (1999) The extent of herbicide resistant annual ryegrass in the Western Australian cropping belt. In ‘Proceedings 12th Australian Weeds Conference’ (A.C. Bishop, M. Boersma and C.D. Barnes, eds), pp. 460, Hobart, Tasmania
Monjardino, M., Pannell, D.J. and Powles, S. (1999) Managing herbicide resistance: should you conserve or exploit your herbicides? 43rd Australian Agricultural and Resource Economics Society and 6th New Zealand Agricultural Resource Economics Society Conference.
Powles, S. B. (1997) Success from adversity: Herbicide resistance can drive changes to sustainable weed management systems. Brighton Crop Protection Conference.
SELECTED EXTENSION ARTICLES
D’Emden, F.H., Llewellyn, R.S. and Burton, M.P. (2005). Driving the No-till Revolution. Australian Farm Journal, December.
Keep glyphosate resistance rare (2005). Australian Grain, July-August. p32-33.
Draper, A. (2003) Computer model helps plan attack on ryegrass, Australian Farm Journal, March, p 40-41.
Llewellyn, R.S. (2003) Cutting the costs of herbicide resistance, Australian Farm Journal, March, p 42.
Llewellyn, R., and Walsh, M. (2003) Target weed weaknesses to win resistance war, Farming Ahead, No. 140, September, p 44-45
Neve, P. (2003) Protecting glyphosate with the double knock, Farming Ahead, No. 136, April,
Walsh, M. (2003) Assessing options for weed seed removal at harvest, Australian Farm Journal, March, p 40-41.
Ferris, D. (2002). No sign of chaff cart resistant ryegrass. Australian Grain, Vol.12, No.5, p. 41.
Llewellyn, R. S. (2002). Growers rate weed control practices. Australian Grain, Vol. 12, No. 6, p39.
Llewellyn, R. S. (2002). The cost of hitting the herbicide resistance wall. Australian Grain, Vol. 12, No. 3, pp 3-4.
Llewellyn, R. S. (2002). Time is right for resistance testing. Farming Ahead, Vol. 130, October, p. 27.
Llewellyn, R. S., Neve, P., Walsh, M., and Powles, S. (2002). Make every effort to keep resistance rare. Farming Ahead, Vol. 130, October, pp. 26-27.
Steadman, K.J., (2002) Understanding the ryegrass enemy. Australian Grain. Vol. 12, No.5, Southern Australia Focus, p. 5.
Walsh, M., and Parker, W. (2002). use chaff carts to tackle resistant weeds. Farming Ahead, Vol. 130, October, pp. 30-31. |
