France 2010

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France 2010

  1. 1. A comparison of chemical fertiliser and separated liquid pig manure as the sole nitrogen source for winter wheat production.Gráinne Meade & Tom Mc CabeUniversity College Dublin,Lyons Research Farm, Newcastle, Co. Dublin, Ireland.<br />
  2. 2. Presentation Outline<br />Background<br />Hypothesis<br />Materials and Methods<br />Results <br />Conclusion<br />
  3. 3. Background<br />
  4. 4. Background<br />Improved manure spreading technologies <br /> and<br />Improved manure treatment technologies<br />Land application of pig manure at advanced winter wheat growth stages may now be viable<br />
  5. 5. Hypothesis<br />Can liquid pig manure be used as an alternative to chemical fertiliser as a nitrogen source for winter wheat production?<br />
  6. 6. Materials and Methods<br />2 experimental sites<br />3 N treatments<br />Untreated zero N control<br />Separated liquid pig manure (LPM)<br />Inorganic N fertiliser (CF)<br />3 manure application timings<br />G.S 31 (1st node)<br />G.S 33 (3rd node)<br />G.S 39 (flag leaf emergence)<br />
  7. 7. Materials and Methods<br />N rate 120 kgN/ha<br />Liquid Pig Manure (LPM) <br />4% N, 0.08% P, 2% DM<br />Band spread at a rate of 30 m3/ha <br />Inorganic N (CF) – 27% N<br />Leaf N % and chlorophyll readings taken at 10 day intervals until natural senescence<br />Crop N uptake, grain yield and nitrogen uptake efficiency was assessed at harvest <br />
  8. 8. Results<br />
  9. 9. Effect of trial site and N source on leaf chlorophyll readings<br />
  10. 10. Effect of trial site and N source on leaf N percent <br />
  11. 11. Effect of manure application timing on leaf chlorophyll readings<br />
  12. 12. Effect of N application timing on leaf chlorophyll readings <br />
  13. 13. Polynomial regression of average leaf chlorophyll readings and leaf N content samples taken at 10 day intervals for 70 days post N application<br />
  14. 14. Polynomial regression of average leaf chlorophyll readings and leaf N content samples taken at 10 day intervals for 70 days post N application<br />
  15. 15. Correlation between leaf N percentage and leaf chlorophyll readings <br />Chlorophyll Units<br />
  16. 16. Effect of N source on winter wheat crop N uptake <br />
  17. 17. Effect of N source on winter wheat grain yield (kg/ha)<br />
  18. 18. Effect of N application timing on grain yield<br />
  19. 19. Nitrogen uptake efficiency as affected by N source and site<br />
  20. 20. Conclusion<br />LPM proved to be a useful N source for winter wheat production <br />LPM increased grain yield and CNU by 48% and 74% respectively compared to the zero N control. <br />Timely LPM application can achieve similar grain yield levels to chemical fertilisers <br />LPM application may result in economic benefits for cereal producers<br />CF proved to be a more efficient N source for grain yield production<br />
  21. 21. Thank you for listening!<br />Any Questions????<br />

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