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Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou
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Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding. Aliakbar Solhjou

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A presentation made at the WCCA 2011 event in Brisbane, Australia.

A presentation made at the WCCA 2011 event in Brisbane, Australia.

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  • 1. A. A. Solhjou, J. Fielke and J. Desbiolles Effect of narrow opener geometry on lateral surface soil movement and implications for no-till seeding Barbara Hardy Institute – Agricultural Machinery Research and Design, University of South Australia 2011
  • 2. Introduction Tined no-till opener
  • 3. Excessive soil disturbance
  • 4.
    • Excessive soil disturbance by tined no-till openers leads to increased :
    • Depth of soil cover on alternate furrows
    • Pre- emergent herbicide contamination above the seed zone
    • Weed seed germination
    • Soil moisture loss
    Problems of excessive soil disturbance Poor seed germination
  • 5. Material and Methods
    • A flat narrow point opener
    • Experimental design: randomized complete block design with n= 4 rep.
    • Treatments:
    • Rake angles: 35 °, 53°, 72° and 90°
    • Forward speed (v) : 8.2 km/h
    • Work depth (d): 120 mm
    • Commercial bent leg opener
    • V= 8.2 km/h and d= 120 mm- n=2
    Bent leg opener Flat opener 1 2
  • 6. Rake angle
  • 7. Tracers location before tillage
  • 8. X-Y-Z digitising frame
  • 9. Laser soil profile meter
  • 10. Measuring bottom soil profile with laser
  • 11. Tracer locations after tillage 90 ° 35 °
  • 12. Tracer locations after tillage Cross section of soil profile and tracer locations- n=4 α = 35°
  • 13. Tracer locations after tillage Cross section of soil profile and tracer locations- n=4 α = 53°
  • 14. Tracer locations after tillage Cross section of soil profile and tracer locations- n=4 α = 72°
  • 15. Tracer locations after tillage Cross section of soil profile and tracer locations- n=4 α = 90°
  • 16. Tracer locations after tillage Cross section of soil profile and tracer locations - n= 2 (commercial bent leg opener) Bent leg
  • 17. Results
    • Opener geometry strongly affects on patterns of surface soil movement.
    • 2. Flat opener rake angles clear pre-emergent herbicide above seed zone. However, these rake angles move pre-emergent herbicide onto the adjacent furrow.
    • 3. Bent leg opener reduces soil movement on the adjacent furrow (uniform seed germination).
  • 18. Results 4. Bent leg opener reduces lateral surface soil movement (pre- emergent herbicide) into adjacent furrow compare to flat openers (crop safety).
  • 19. Thank you
  • 20.  
  • 21. Commercial bent leg opener
  • 22. Effect of rake angle on average lateral tracer movement
  • 23. Tracer locations after tillage Cross section of soil profile and tracer locations - n= 2 (commercial bent leg opener)
  • 24. Effect of rake angle on soil failure in the front of openers 35 ° 90°
  • 25. Tracer locations after tillage for opener rake angle of 90° and commercial bent leg opener α = 90° Bent leg
  • 26. Effect of rake angle on average lateral tracer movement

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