Farming Deep In Climate Change: The West Australia Experience

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Tim Wiley is an agronomist with the West Australian Department of Agriculture & Food. He is also a leading member of the soil carbon movement and contributes to the debate at a national level. Tim has lived through the first major Climate Change disaster to strike a western nation, the long drought in WA. His leadership and strength has helped many landholders in the west to hang on.

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Farming Deep In Climate Change: The West Australia Experience

  1. 1. Climate change in the Northern Agriculture Region of WA - threats and opportunities Tim Wiley, Department of Agriculture and Food Western Australia Geraldton
  2. 5. <ul><li>Farmers recorded stock movements 06/07 </li></ul><ul><li>DAFWA calculated grazing days for each paddock </li></ul><ul><li>DAFWA measured ground cover in May 2007 </li></ul>“ High stocking rate grazing systems to reduce erosion” Northern Agri Group with NLP, NACC & DAFWA
  3. 6. Sand storm 9 April 2007
  4. 7. Annual pasture on sand 30 May 2007
  5. 8. Crop stubble at Murray Carson’s
  6. 9. Perennial grass pasture & tagasaste
  7. 11. Jim Wedge’s ASCAS, October 2008 Soil Corer
  8. 12. Bulk Density sampling
  9. 13. Carson May 2008
  10. 14. Bain February 2008
  11. 15. Gillam Q&Q March 2007
  12. 16. ‘ Whole soil’ Organic C in the top 30 cm of soil - annuals vs. perennials Paired paddock sampling 3.9 28.2 1.37 0.69 Perennial     23.2 1.38 0.56 Annual Carson -1.6 28.7 1.60 0.60 Perennial     30.4 1.60 0.63 Annual Bain 11.6 40.0 1.60 0.83 Perennial     28.1 1.60 0.59 Annual Bain 3.7 21.6 1.61 0.45 Perennial     15.5 1.61 0.32 Annual Forsyth 6.0 44.3 1.57 0.94 Perennial     37.7 1.57 0.80 Annual Wilson 10.8 31.5 1.60 0.66 Perennial     19.7 1.60 0.41 Annual Nixon CO2e t/ha/yr C t/ha Bulk Density OC% Pasture Paddocks
  13. 17. ‘ Whole soil’ Organic C in the top 30 cm of soil - annuals vs. perennials 5.6 28.2 1.37 0.59 Rhodes   11.7 36.2 1.37 0.75 Kikuyu     21.0 1.42 0.44 Annual BRS 2.2 36.4 1.47 0.83 Couch   -1.0 34.0 1.47 0.77 Green panic   7.2 40.1 1.47 0.91 Bambatsi panic   7.2 40.1 1.47 0.91 Siratro   9.9 42.1 1.47 0.96 Lucerne   3.1 37.0 1.47 0.84 Kikuyu   8.1 40.8 1.47 0.93 Rhodes     34.7 1.47 0.79 Annual Metcalfe 4.5 22.5 1.43 0.52 Signal grass   4.4 22.3 1.43 0.52 Green panic   2.7 20.6 1.43 0.48 Rhodes     17.9 1.28 0.47 Annual Gillam 5.1 24.7 1.47 0.56 Lucerne   6.3 25.6 1.47 0.58 Rhodes     20.9 1.48 0.47 Annual Combes B 16.0 33.9 1.38 0.82 Lotononis   9.4 29.0 1.38 0.70 Kikuyu   6.1 26.6 1.38 0.64 Rhodes   6.1 26.5 1.38 0.64 Green panic     22.0 1.38 0.53 Annual Combes A CO2e t/ha/yr C t/ha Bulk Density Organic C % Pasture Trial site

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