Rusts revist after another wet summer

Wheat leaf and stem rust occurrence in 1999 resulted in a rust epidemic estimated to cause $20 million in lost production in 1999. Despite the awareness of rust-risk today, inflexibility in switching production to resistant varieties will again result in high rust disease levels for some areas in 2000. Rob Loughman, Jat Bhathal, Kith Jayasena and Robin Wilson report on the levels of resistance in various cereal varieties and the management options open to those growers who find rust in susceptible varieties this season

Crop Updates 2000 - Cereals part 2

This session covers twenty papers from different authors: DISEASE 1. Forecasting aphid and virus risk in cereals, Debbie Thackray, Jenny Hawkes and Roger Jones, Agriculture Western Australia and Centre for Legumes in Mediterranean Agriculture 2. Cereal Diagnostics, Dominie Wright, Agriculture Western Australia 3. The economic returns from spraying for leaf rust in the central wheatbelt in 1999, Peter Carlton, Trials Coordinator, Elders Limited 4. Impact and Management of Yellow Spot and Leaf Rust in the Northern Agricultural Region, Jat Bhathal and Robert Loughman, Agriculture Western Australia 5. Leaf disease management in wheat and barley in the southern agricultural region, K. Jayasena, R. Loughman and J. Majewski, Agriculture Western Australia 6. Root nematode update, R. Loughman1, S. Kelly1, G. Holloway2, N. Venn1 and D. Diepeveen1 1 Agriculture Western Australia, 2Agriculture Victoria WHEAT AGRONOMY 7. Small Grain Screenings in wheat - the agronomic issues, Brenda Shackley, Agriculture Western Australia, 8. Response of New Wheat Varieties to Seed Rate and applied Nitrogen in the North, Darshan Sharma and Wal Anderson, Agriculture Western Australia 9. Seen vigour in wheat, Darshan Sharma and Wal Anderson, Agriculture Western Australia 10. Influence of the Time of Sowing on New Wheat Varieties in the North, Darshan Sharma and Wal Anderson, Agriculture Western Australia 11, Wheat performance in a high disease season on the South Coast. 1. Disease and grain quality on the Esperance sandplain, Mohammad Amjad, Vanessa Dooley and Wal Anderson, Agriculture Western Australia 12. Wheat performance in a high disease season on the South Coast. 2. Leaf area, disease and yield at Gibson and Salmon Gums, Mohammad Amjad, Vanessa Dooley and Wal Anderson, Agriculture Western Australia 13. Agronomic Evaluation of Wheat in the Central Wheatbelt of Western Australia, Peter Burgess and Ashley Bacon, Agritech Crop Research 14. Mechanisms influencing grain susceptibility to black point in wheat, Frances Hoyle, University of Western Australia and Agriculture Western Australia 15. Improving paddock productivity using renovation cropping techniques on heavier soils, Frances Hoyle, Agriculture Western Australia 16. Improving paddock productivity using renovation cropping techniques on sandplain soils, Frances Hoyle and Keith Devenish, Agriculture Western Australia 17. Increasing profit - Is it possible using high input package approach for cereal production? M. Appelbee, IAMA Agri Services 18. Improving wheat yield, soil physical and chemical fertility by a package of deep ripping, gypsum and complete nutrients, M.A. Hamza and W.K. Anderson, Agriculture Western Australia 19. Organic Wheat - Production System Guidelines, Steven McCoy, Centre for New Industries Development 20. Durum wheat obtains a premium over bread wheat, Steven Penny, Agriculture Western Australi

Habitat partitioning and vulnerability of sharks in the Great Barrier Reef Marine Park

Sharks present a critical conservation challenge, but little is known about their spatial distribution and vulnerability, particularly in complex seascapes such as Australia's Great Barrier Reef Marine Park (GBRMP). We review (1) the distribution of shark species among the primary habitats of the GBRMP (coral reefs, inshore/shelf, pelagic and deep-water habitats) (2) the relative exploitation of each species by fisheries, and (3) how current catch rates interact with their vulnerability and trophic index. Excluding rays and chimaeras, we identify a total of 82 shark species in the GBRMP. We find that shark research in the GBRMP has yielded little quantitative information on most species. Reef sharks are largely site-fidelic, but can move large distances and some regularly use non-reef habitats. Inshore and shelf sharks use coastal habitats either exclusively or during specific times in their life cycle (e.g. as nurseries). Virtually nothing is known about the distribution and habitat use of the GBRMP's pelagic and deep-water sharks. At least 46 species (53.5 %) are caught in one or more fisheries, but stock assessments are lacking for most. At least 17 of the sharks caught are considered highly vulnerable to exploitation. We argue that users of shark resources should be responsible for demonstrating that a fishery is sustainable before exploitation is allowed to commence or continue. This fundamental change in management principle will safeguard against stock collapses that have characterised many shark fisheries

Rusts revist after another wet summer

Wheat leaf and stem rust occurrence in 1999 resulted in a rust epidemic estimated to cause $20 million in lost production in 1999. Despite the awareness of rust-risk today, inflexibility in switching production to resistant varieties will again result in high rust disease levels for some areas in 2000. Rob Loughman, Jat Bhathal, Kith Jayasena and Robin Wilson report on the levels of resistance in various cereal varieties and the management options open to those growers who find rust in susceptible varieties this season

Crop Updates 1999 - Cereals

This article covers sixty papers FOREWORD ACKNOWLEDGMENTS PLENARY PAPERS 1. Western Australia’s climate: trends and opportunities, Len W. Broadbridge, Director, Bureau of Meterorology 2. Managing seasonal variations in agriculture, Dr Doug Abrecht, Director, Dryland Research Institute, Merredin CROP ESTABLISHMENT 3. Soil management to prevent waterlogging on duplex soils in the Great Southern, D. Bakker, Greg Hamilton, Cliff Spann and Doug Rowe, Agriculture Western Australia 4. The influence of no-till and press wheels on crop production for heavy soils, Peter Fisher, Jennifer Bignell, Matthew Braimbridge, Greg Hamilton, Agriculture Western Australia NUTRITION 5. Fertiliser nitrogen, applied late, needs rain to increase grain nitrogen and protein levels in wheat, Bill Bowden1, Ross Brennan1, Reg Lunt1 and Senthold Asseng2 1 Agriculture Western Australia, 2 CSIRO 6. Canola upsets the nutrition of the next cereal crop? Bill Bowden1, Garren Knell1, Cherie Rowles 1, Simon Bedbrook\u27, Chris Gazey 1,Mike Bolland1, Ross Brennan 1, Lyn Abbott2, Zed Rengel2 and Wayne Pluske3, 1 Agriculture Western Australia, 2 UWA Soil Science, 3 CSBP 7. Comparisons between high analysis nitrogen sources, Erin Cahill, CSBP 8. Urea additives for reduced drilled urea toxicity for canola and wheat, Bill Crabtree, WANTFA 9. Fertiliser placement, Matthew Evans, CSBP 9. The profitability of variable rate nitrogen applications on wheat, Tim Nielsen, CSBP Technical Services DISEASE 10. Fungicide for wheat leaf disease: boon or bane? Jat Bhathal, Rob Loughman and D. Rasmussen, Plant Pathology, Agriculture Western Australia 11. Role of retained wheat stubbles in disease carryover in wheat/lupin rotations, Jat Bhathal and Rob Loughman, Plant Pathology, Agriculture Western Australia 12. Comparison of aerial and ground application of fungicide for lead disease control ion wheat, Jat Bhathal and Rob Loughman, Plant Pathology, Agriculture Western Australia 13. Bean yellow mosaic virus infection of alternative pasture legume species, Roger Jones, CRC for legumes in Mediterranean Agriculture and Agriculture Western Australia 14. Survey of cereal root nematodes in cropping soils in Western Australia, Sean Kelly1, Ian Riley2 and Robert Loughman1, 1 Agriculture Western Australia,2 University of Adelaide 15. Crop management options for root lesion nematode, Robert Loughman 1, Sharyn Taylor2, Vivien Vanstone 3, Ian Riley3 and Dominie Wright1, 1 Agriculture Western Australia, 2SARDI Plant Research Centre, Glen Osmond, South Australia 3 University of Adelaide, Glen Osmond, South Australia 16. Forecasting barley yellow dwarf risk in cereals, Debbie Thackray and Roger Jones, Agriculture Western Australia and CRC for Legumes in Mediterranean Agriculture 17. Managing barley yellow dwarf virus in cereal crops, Debbie Thackray, Roger Jones and Simon McKirdy, Agriculture Western Australia and CRC for Legumes in Mediterranean Agriculture 18. Broadacre diagnostic service, Dominie Wright, Agriculture Western Australia, AGWEST Plant Laboratories 19. Using twist fungus (Dilophospora alopecuri) to reduce the risk of annual ryegrass toxicity, Dr George Yan1 and Dr Ian Riley2, 1 Plant Research and Development Service, Agriculture Western Australia, 2 Applied and Molecular Ecology, Waite Campus, The University of Adelaide, South Australia NEW VARIETIES 20. New wheat and oat varieties for 1999, Robin Wilson, lain Barclay, Robyn Mclean, Dean Diepeveen, Robert Loughman, and Bill Lambe, Agriculture Western Australia 21. Performance in 1998 of recently released wheat varieties, Robin Wilson, lain Barclay, Robyn Mclean, Dean Diepeveen, Robert Loughman and Bill Lambe, Agriculture Western Australia WHEAT AGRONOMY 22. Increasing the noodle ‘strike rate’, Wal Anderson, Brenda Shackley and Mechelle Owen, Agriculture Western Australia, Quality Wheat CRC 23. Variety trials: wheat and barley, Peter Burgess, Lamond Burgess & Associates 24. South coast wheat variety farmer survey, Ben Curtis, Agriculture Western Australia 25. Residual effects of deep ripping, gypsum and nutrients on grain yields and soil properties, Mohammed A. Hamza and W.K. Anderson, Agriculture Western Australia 26. How to ensure durum wheat profitability! Jamie Henderson, Frank Boetel and Alfredo lmpiglia, Agriculture Western Australia 27. Agronomic evaluation of new wheat varieties for 1999 in the Northern Agricultural Region, Frances Hoyle, Agriculture Western Australia 28. The influence of on-farm management and variety of grain screening levels, Frances Hoyle, Agriculture Western Australia 29. Variety response of hard wheats to management, Darshan Sharma and Wal Anderson, Agriculture Western Australia BARLEY AND OATS 30. Studies into production of export oaten hay, Pierre Fievez, Pierre Fievez and Associates 31. Gairdner barley in the Central and Northern Regions, Blakely Paynter, Agriculture Western Australia 32. Improving milling oat quality, Glenn McDonald, Agriculture Western Australia 33. Gairdner barley in the Southern Region, Kevin Young, Agriculture Western Australia PASTURE 34. The herbicide tolerance of some annual pasture legumes, Andrew Blake, Agriculture Western Australia 35. Pasture systems for cropping rotations in the northern wheatbelt, Keith Devenish, Agriculture Western Australia 36. Perennial pastures reduce recharge and acidification, Perry Dolling, Agriculture Western Australia 37. It’s time to include Lucerne in the pasture-crop system, Roy Latta 1, Lisa-Jane Blacklow2 and Chris Matthews 1,1 Agriculture Western Australia, 2 University of Western Australia, 38. New alternative pasture legume for fine textured soils, Angelo Loi, Brad Nutt and Rochelle McRobb, National Australian Pasture Legumes Improvement Program (NAPLIP) and Centre for Legumes in Mediterranean Agriculture (CLIMA) 39. Increasing pasture productivity on acid wodjil soils, Brad Nutt, David Webb and Andrew McRobb, Centre for Legumes in Mediterranean Agriculture (CLIMA) 40. Annual legume pasture species now available for use in cropping systems. Clinton Revell, Agriculture Western Australia 41. Herbicide and cultural management of Cadiz serradella in ‘phase’ pastures, Clinton Revell, Agriculture Western Australia 42. Spring spraying for redlegged earth mite, James Ridsdill-Smith and Celia Pavri, CSIRO Entomology and CLIMA 43. Water use and water extraction by recently developed pasture legume species and cultivars, David Tennant1, Darryl McClements2, Ross Thompson 1 and Mike Ewing2, 1 Natural Resource Management Services, Soil Management, 2 Plant Research and Development, Pasture Sciences 44. Death knell to doublegees? Tim Woodburn· and Paul Yeoh, CSIRO Entomology/CRC Weed Management Systems, Floreat LIMING 45. Calculated lime requirements for rotations, James Fisher1, Art Diggle 1•2 and Bill Bowden 1•2, 1 Centre for Legumes in Mediterranean Agriculture 2 Agriculture Western Australia 46. The RH lime reactivity test and RH of typical WA limes, Mark Whitten and Andrew Rate, Soil Science and Plant Nutrition, University of Western Australia YIELD MAPPING 47. Benchmarking target yields for wheat, Senthold Asseng 1, Bill Bowden2 and Paul Carlile3, 1 CSIRO Plant Industry, 2 Agriculture Western Australia, 3 UWA 48. Getting the most information from farm scale trial, Ed Blanchard, Agricultural Engineering and Precision Farming Consultant, Merredin, WA 49. Measuring nutrient changes using yield maps, Ed Blanchard, Agricultural engineering and precision farming consultant; Precision Farming Demonstration Project Coordinator for the Kondinin Group, Merredin WA BREEDING 50. Crop improvement royalties – investing in the future, Bevan Buirchell and Dean Diepeveen, Agriculture Western Australia 51. Screening cereals for genotypic variation in phosphorus efficiency, Lorraine Osborne and Zed Rengel, Soil Science and Plant Nutrition, University of Western Australia ON FARM TESTING 52. Test as you grow pays dividends, John Blake, Tress Walmsley, Terry Piper, Wal Anderson, Dean Diepeveen, Cameron Weeks, Michael Dodd, Amanda Falconer, Caroline Peek, Glenn Adam, Agriculture Western Australia 53. How useful is on-farm testing, Camray Gethin 1, Richard Guinness2, Simon Bedbrook1, Dean Diepeveen4, 1 TopCrop Development Officer, Agriculture Western Australia, 2 Farmer, Kunjin TopCrop Group, Corrigin, 3 Agricultural Consultant, Farmanco, York, 4 CVT service, Crop Industries, Agriculture Western Australia, ECONOMICS 54. The impact of farm practices on sustainability costs of rotations, Pierre Fievez, Pierre Fievez and Associates 55. Right rotations for TopCrop, Daniel Fels, Agriculture Western Australia 56. Dollars of water use efficiency, Andrew Rintoul, FAST National, GRDC funded project, Planfarm 57. Farm business structures, Andrew Rintoul, FAST National, GRDC funded project, Planfarm CLIMATE 58. Broadscale weather aspects affecting Western Australia during 1998 and prospects for 1999, Mal Lamond, Lamond Weather Services 59. An updated look at aspects of rainfall trends and variability in the south-west of Western Australia, Roger Tapp, Climate and Consultancy Section, Bureau of Meteorology, Perth WA 60. Frost research in the eastern wheatbelt, Craig White, Research Officer, Agriculture Western Australia, Presented by D.G. Abrech