snapped achilles playing touch rugby two weeks ago no, i am not too old!
TRANSCRIPT
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Snapped AchillesPlaying touch rugby
Two weeks ago
No, I am not too old!
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Herbicide ResistanceGood news and Bad news
Peter Newman, AHRI
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Bad news first
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Susceptible Resistant ResistantSusceptible
Glyphosate 450 g/ha Glyphosate 750 g/ha
Glyphosate resistance in Wild RadishMike Ashworth, AHRI
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Glyphosate (g ha-1)
0 1000 2000 3000 4000 5000 6000
Pla
nt S
urvi
val (
%)
0
20
40
60
80
100
Susceptible wild radish
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Glyphosate (g ha-1)
0 1000 2000 3000 4000 5000 6000
Pla
nt S
urvi
val (
%)
0
20
40
60
80
100 4.5 fold resistant
6.25 L/ha of 480g/L
9 L/ha of 480g/L
12.5 L/ha
Glyphosate resistant wild radish
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Label rate Label rate
Population dose responseSusceptible Resistant
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Glyphosate resistant ryegrassGlyphosate sustainability working group led by Chris Preston
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Now for the good news
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50100
200400
0
200
400
600
800
1000
90
18
0 27
0
Seeding rate kg/ha
Rye
gra
ss H
ea
ds/
m2
Row Spacing mm
David Minkey
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30 kg/ha60 kg/ha
90 kg/ha120 kg/ha
0
50
100
150
200
250
300
7" Rows
14" Rows
1999 - Brome / ryegrass seed heads /m2
7" Rows
14" RowsPanicles /m2
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40kg/ha 80kg/ha 120kg/ha 160kg/ha0
3000
6000
9000
12000
15000
18000
2012 - Ryegrass seed set /m2
Seeding rate
Ryeg
rass
see
ds /
m2
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40kg/ha 80kg/ha 120kg/ha 160kg/ha0
500
1000
1500
2000
2012 - wheat yield
Wheat seeding rate
Whe
at y
ield
(kg/
ha)
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90 mm
180 mm
270 mm
360 mm
0 100 200 300 400 500 600 700 800 900
2004 - Ryegrass seeds/m2
Glen Riethmuller27 year trial – stubble
retained
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Glen Riethmuller27 year trial – stubble retained
90 mm
180 mm
270 mm
360 mm
0 10 20 30 40 50 60 70 80 90
0.7
0.4
19
77.5
2013 - ryegrass seed set /m2
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1% / inch
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15cm (6”)30cm (12”)
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Seeding Efficiency - % of seeds that emerge
15cm22cm
30cm
0
10
20
30
40
50
60
70
80
90
100
Ribbon sowing treatment
1209060
Crop row spacing (cm)
Seed
ing
effici
ency
(%)
Seed rate kg/ha
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Benefit compared to 12”
10” (25cm)
7.5” (19cm)
Reduction in row spacing (cm) 5 11
Wheat yield benefit (kg/ha) 40 88
$/ha benefit $10.80 $23.76
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Cost compared to 12”
10” (25cm) 7.5” (19cm)
Extra cost of bar (John Deere) $13,000 $24,000
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Cost compared to 12”
10” (25cm) 7.5” (19cm)
Extra cost of bar (John Deere) $13,000 $24,000
Cost /ha/yr (8yr 2000ha) $0.81 $1.50
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Cost compared to 12”
10” (25cm) 7.5” (19cm)
Extra cost of bar (John Deere) $13,000 $24,000
Cost /ha/yr (8yr 2000ha) $0.81 $1.50
Extra fuel ($/ha) – worst case $1.20 $3.50
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Cost compared to 12”
10” (25cm) 7.5” (19cm)
Extra cost of bar (John Deere) $13,000 $24,000
Cost /ha/yr (8yr 2000ha) $0.81 $1.50
Extra fuel ($/ha) $1.20 $3.50
Delayed sowing cost ($/ha) 0 $5.56
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Cost compared to 12”
10” (25cm) 7.5” (19cm)
Extra cost of bar (John Deere) $13,000 $24,000
Cost /ha/yr (8yr 2000ha) $0.81 $1.50
Extra fuel ($/ha) $1.20 $3.50
Delayed sowing cost ($/ha) 0 $5.56
Total extra cost /ha $2.01 $10.56
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Scoreboard
10” 7.5”
Cost $2.01 $10.56
Benefit $10.80 $23.76
Net Benefit $/ha $8.79 $13.20
Wheat only – 2 t/ha. 8 kg/ha/cm
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Crop Orientation50% reduction in ryegrass seed set
for freeCatherine Borger
Department of Agriculture and Food WA
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East-west North-south
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James Buttle 0427 714 898
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650 hours
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iHSD update
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@peterdnewman
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