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Seed bank obsession
Why?
Peter Newman, AHRI
Benefits of low seed bank
Profitable crops.
Fewer weeds.
Benefits of low seed bank
Farmer calls
the shots, not
the weeds.
Benefits of low seed bank
Herbicide longevity
Population size
X
genetic diversity
Brome grass
self pollinating
Subscribe
HWSC
Michael Walsh – 9 trials 2008
HWSC complements herbicides
Walsh et al. Weed Tech. 2013
0
5
10
15
20
25
30
2001 2002 2003 2004 2005 2006 2007 2008 2009 2...
The art
of
narrow
windrow
burning
1.
Harvest
Low
2.
Harvest
Low
3.
Harvest
Low
Grass
fire
index
2 to 10
Light
cross
wind
Light up every 200 to 400m
Massive windrows?
Be patient – wait til 11th hour
Bale DirectChaff cart Narrow windrow burning
Harrington Seed Destructor
5 Options
Chaff Deck
$10K - $35K
$78K
$12K - $14K
Mark Wandel – Chaff on one tram
Chaff lining
Mic Fels, Esperance
Chaff dump from
last harvest
Winter burning??
Two year old chaff dump
- competition + competition
0
3000
6000
9000
12000
15000
18000
40kg/ha 80kg/ha 120kg/ha 160kg/ha
Ryegrassseeds/m2
Seeding rate
Newman (DAFWA) 2012 - R...
Glen Riethmuller
27 year trial – stubble retained
0.7
0.4
19
77.5
0 10 20 30 40 50 60 70 80 90
90 mm
180 mm
270 mm
360 mm
...
More yield
1% / inch
More crop, less weeds
Win Win
East-west
51% less ryegrass seed by sowing east-west
North-south
Crop Orientation
50% reduction in weeds for free
Catherine Borger
Department of Agriculture & Food WA
More cost effective to achieve high crop
competition through row spacing and
row orientation than through just
increasing ...
@peterdnewman
On-line learning from AHRI
Thank you
Seed bank obsession, Why? - Peter Newman, AHRI
Seed bank obsession, Why? - Peter Newman, AHRI
Seed bank obsession, Why? - Peter Newman, AHRI
Seed bank obsession, Why? - Peter Newman, AHRI
Seed bank obsession, Why? - Peter Newman, AHRI
Seed bank obsession, Why? - Peter Newman, AHRI
Seed bank obsession, Why? - Peter Newman, AHRI
Seed bank obsession, Why? - Peter Newman, AHRI
Seed bank obsession, Why? - Peter Newman, AHRI
Seed bank obsession, Why? - Peter Newman, AHRI
Seed bank obsession, Why? - Peter Newman, AHRI
Seed bank obsession, Why? - Peter Newman, AHRI
Seed bank obsession, Why? - Peter Newman, AHRI
Seed bank obsession, Why? - Peter Newman, AHRI
Seed bank obsession, Why? - Peter Newman, AHRI
Seed bank obsession, Why? - Peter Newman, AHRI
Seed bank obsession, Why? - Peter Newman, AHRI
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Seed bank obsession, Why? - Peter Newman, AHRI

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Seed bank obsession, Why? - Peter Newman, AHRI

  1. 1. Seed bank obsession Why? Peter Newman, AHRI
  2. 2. Benefits of low seed bank Profitable crops. Fewer weeds.
  3. 3. Benefits of low seed bank Farmer calls the shots, not the weeds.
  4. 4. Benefits of low seed bank Herbicide longevity Population size X genetic diversity
  5. 5. Brome grass self pollinating
  6. 6. Subscribe
  7. 7. HWSC
  8. 8. Michael Walsh – 9 trials 2008
  9. 9. HWSC complements herbicides Walsh et al. Weed Tech. 2013 0 5 10 15 20 25 30 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 Annualryegrass(plants/m2) Plus HWSC Minus HWSC Peter Newman and Michael Walsh
  10. 10. The art of narrow windrow burning
  11. 11. 1. Harvest Low
  12. 12. 2. Harvest Low
  13. 13. 3. Harvest Low
  14. 14. Grass fire index 2 to 10
  15. 15. Light cross wind
  16. 16. Light up every 200 to 400m
  17. 17. Massive windrows? Be patient – wait til 11th hour
  18. 18. Bale DirectChaff cart Narrow windrow burning Harrington Seed Destructor 5 Options Chaff Deck
  19. 19. $10K - $35K
  20. 20. $78K
  21. 21. $12K - $14K
  22. 22. Mark Wandel – Chaff on one tram
  23. 23. Chaff lining Mic Fels, Esperance
  24. 24. Chaff dump from last harvest Winter burning??
  25. 25. Two year old chaff dump
  26. 26. - competition + competition
  27. 27. 0 3000 6000 9000 12000 15000 18000 40kg/ha 80kg/ha 120kg/ha 160kg/ha Ryegrassseeds/m2 Seeding rate Newman (DAFWA) 2012 - Ryegrass seed set /m2 Nil pre-em
  28. 28. Glen Riethmuller 27 year trial – stubble retained 0.7 0.4 19 77.5 0 10 20 30 40 50 60 70 80 90 90 mm 180 mm 270 mm 360 mm 2013 - ryegrass seed set /m2
  29. 29. More yield 1% / inch More crop, less weeds Win Win
  30. 30. East-west 51% less ryegrass seed by sowing east-west North-south
  31. 31. Crop Orientation 50% reduction in weeds for free Catherine Borger Department of Agriculture & Food WA
  32. 32. More cost effective to achieve high crop competition through row spacing and row orientation than through just increasing seeding rate
  33. 33. @peterdnewman
  34. 34. On-line learning from AHRI
  35. 35. Thank you

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