2. Seed bank obsession
Why?
Peter Newman, AHRI

3. Benefits of low seed bank
Profitable crops.
Fewer weeds.

4. Benefits of low seed bank
Farmer calls
the shots, not
the weeds.

5. Benefits of low seed bank
Herbicide longevity
Population size
X
genetic diversity

6. Brome grass
self pollinating

8. Subscribe

9. HWSC

10. Michael Walsh – 9 trials 2008

11. 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

12. The art
of
narrow
windrow
burning

13. 1.
Harvest
Low

14. 2.
Harvest
Low

15. 3.
Harvest
Low

16. Grass
fire
index
2 to 10

17. Light
cross
wind

18. Light up every 200 to 400m

20. Massive windrows?
Be patient – wait til 11th hour

23. Bale DirectChaff cart Narrow windrow burning
Harrington Seed Destructor
5 Options
Chaff Deck

24. $10K - $35K

25. $78K

26. $12K - $14K

28. Mark Wandel – Chaff on one tram

30. Chaff lining
Mic Fels, Esperance

34. Chaff dump from
last harvest
Winter burning??

35. Two year old chaff dump

37. - competition + competition

38. 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

39. 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

40. More yield
1% / inch
More crop, less weeds
Win Win

41. East-west
51% less ryegrass seed by sowing east-west
North-south

42. Crop Orientation
50% reduction in weeds for free
Catherine Borger
Department of Agriculture & Food WA

43. More cost effective to achieve high crop
competition through row spacing and
row orientation than through just
increasing seeding rate

49. @peterdnewman

50. On-line learning from AHRI

52. Thank you