Trials to control Western Corn
Rootworn (Diabrotica virgifera
virgifera) in AustriaRosner J.: Ofiice of the Lower Austrian Provincial Government,
Department of Agricultural Education, Frauentorgasse 72, A-
3430 Tulln Austria
Foltin, K.: Agro ds Austria, Wulkaprodersdorf, Austria
Hansag Seewinkel
Burgenland 2008
Aging - feeding on the
ears with reduced
fertilization by eating on
the silks
Strategies for monoculture (continuous corn)
•Seed treatment or seedrillaplication, band, T-band, furrow application with granules or liquids
• treatment of young plants with granules or liquids into the root – zone (Talstar – active substance
Bifentrin)
Cornplanter with seedrill (furrow)
application granule drill for Bifenthrin Spraying the beetles
Variant 1.1. und 1.2.:
Wide – angle nozzle - 2005Spray wide 8 m Spray pressure 3 bar
Variant 2:
Air assisted sprayer boom width 15 m Spray pressure 3 bar
Variant3:
Conventonal Spraying with high boom / Teejet-
nozzles
Boom width 15 m Spray pressure 3 bar
Variant 4:
Drag hoses with double nozzles
2006 2 double nozzles on the high boom
Boom width 15 m Spray pressure 3 bar
application: 10.August 2005; 4.und 17. August 2006 , spray water rate 400l/ha
Test – variants 2005 - 2006
Diabrotica – Pheromone trap PAL Deutsch
Jahrndorf beginning of August 2005 before
insicticide spraying
Catch result 20051.screening
control
untreated
Insecticide
efficacy %
Control
untreated
Insecticide
efficacy %
Spray technology-
variant
2 days after spraying 12.08.2005. 2 weeks after spraying and
change of the trap
17.08.2005
Variant 1: : wide angle
nozzle
No datas 360 513 410
20 %
Variante : air assited
sprayer
225 70
69 %
190 110
42 %
Variante :
conventional spraying with
high boom and tee jet
nozzles
1050 310
70 %
300 180
40 %
Variante :drag hoses with
double nozzles on the high
boom
365 220
40 %
230 140
40 %
Insecticide spraying
Untreated cotrol
2005
% efficacy days after - 1 Application 2006
0
10
20
30
40
50
60
70
80
90
100
Tage nach Applikation
% Wirkung
Luftuntetrstützt 1 Applikation
Konventionell 1 Applikation
Schleppschläuche 1 Applikation
1.5 6 15 19 35
air assited sprayer
conventional sprayer
drag hoses
days after spraying
% efficacy
Results exact trial 2006
% efficacy days after - 2 Applications 2006
0
10
20
30
40
50
60
70
80
90
100
days after spraying
% efficacy
Luftunterstützt 2 Applikationen
Konventionell 2 Applikationen
Schleppschläuche 2 Applikationen
2 6 2 6 22
2. Application
air assited sprayer
conventional sprayer
drag hoses
Results exact trial 2006
Pheromone
traps 6 days
after spraying
Untreated control Air assisted sprayer
Conventional spraying with high
boomDrag hoses with double nozzles
results water sensitive paper test 2005 - 2006
Spray technlogy - variant Improved coverage
Scale 1 - 9
2005 2006
Variant 1: : wide angle nozzle 8 – 9 -
Variant 2 : air assited sprayer 1 – 3 1 - 2
Variante 3 :
conventional spraying with high boom and tee jet nozzles
3 – 5 4 - 6
Variante 4 :drag hoses with one nozzle on the high boom
Variant 4.1.Drag hoses with double nozzles on the high boom
3 – 4
2 - 3
The improved coverage was rated optic with a 1 – 9 scale
90% improved coverage = 1
80% improved coverage = 2
70% improved coverage = 3
………..
10% improved coverage = 9
Result – Wate sensitive Paper Test:
The improved coverage was rated optic with a 1 – 9 scale 90% improved coverage = 1, 80% improved coverage = 2 ,
70% improved coverage = 3 ……….. 10% improved coverage = 9
Air assited sprayerConventional spraying
with high boom
a….50 cm over cornear b…. Height corn ear c…. 50 cm under corn ear
Air assisted sprayer
Drag hoses with 1 double nozzle
on the high boom
Drag hoses with 2 double nozzles
on the high boom
50 cm
over
ear
Hight
ear
50 cm
unde
ear
50 cm
over
ear
50 cm
over
ear
Hight
ear
Hight
ear
50 cm
under
ear
50 cm
under
Improved coverage:
2 3 3 2 2 3 2 2 2
Drag hoses with 1 double nozzle on the high boom
Risk of wind drift
Drag hoses with
unaccaptable spray coating
High boom with drag hoses and double
nozzles 2005
Drag hoses with 2 double nozzles 2006
Dangle of the drag hoses in the corn
High boom in the corn
Air assited spray technology
High clearance tractor
Van sprayer with high risk of wind drift
Diabrotica – control with Seed treatment or seedrillaplication, band, T-band,
furrow application with granules
treatment of young plants with granules into the root – zone
•Hansag – Wallern Seewinkel/Burgenland 2008 - 11
Diabrotica larva -control Seewinkel 2008
Test - variants: Active substance Application rate
1. Control untreated
2. Poncho Pro seedtreatment Clothianidin 104 ml/Unit (50.000 grains)
3. Fipronil Granule drill Fipronil 5 kg/ha
4. Force 1,5 G Granule drill Tefluthrin 15g/kg 13,3 kg/ha - 0.95 g/m
5. Fipronil Granule young plant – larva control Fipronil 5 kg/ha
6. Force 1,5 G Granule young plant – larva control Tefluthrin 15g/kg 13,3 kg/ha
7. Poncho Pro + Fipronil Granule young plant – larva control Clothianidin+Fipronil 104ml+5kg
8. Poncho Pro + Force Granule young plant – larva control Clothianidin + Tefluthrin 104ml+13,3kg
9.( Poncho Pro + Fipronil Granule drill) + Fipronil Granule young plant – larva
control(Clothianidin + Fipronil)
+ Fipronil (104ml+5kg)+5kg
10. ( Poncho Pro + Force Granule drill) + Force Granule young plant – larva
control(Clothianidin +
Tefluthrin) + Tefluthrin (104ml+13,3kg)+13,3kg
root zone application implement
Blade tines for granule-
drill – larva control
2,9
2,5
2,5
2,3
2,1
2,4
2,5
2,5
2,2
2,3
0,0 1,0 2,0 3,0 4,0 5,0 6,0
IOWA - Scale 1-6
1. Control untreated
2. Poncho Pro seedtreatment
3. Fipronil Granule drill
4. Force 1,5 G Granule drill
5. Fipronil Granule young plant – larva control
6. Force 1,5 G Granule young plant – larva control
7. Poncho Pro + Fipronil Granule young plant –
larva control
8. Poncho Pro + Force Granule young plant – larva
control
9.( Poncho Pro + Fipronil Granule drill) + Fipronil
Granule young plant – larva control
10. ( Poncho Pro + Force Granule drill) + Force
Granule young plant – larva control
Diabrotica larva Control2008
IOWA – Scale 1 – 6
Damage threshold
3,5
1,0
1,8
0,5
2,0
1,0
0,5
1,0
0,8
0,3
0,0 0,5 1,0 1,5 2,0 2,5 3,0 3,5
goose neck % plants
1. Control untreated
2. Poncho Pro seedtreatment
3. Fipronil Granule drill
4. Force 1,5 G Granule drill
5. Fipronil Granule young plant – larva control
6. Force 1,5 G Granule young plant – larva control
7. Poncho Pro + Fipronil Granule young plant – larva control
8. Poncho Pro + Force Granule young plant – larva control
9.( Poncho Pro + Fipronil Granule drill) + Fipronil Granule young plant – larva control
10. ( Poncho Pro + Force Granule drill) + Force Granule young plant – larva control
Goose neck % plants 2008
1,5
0,5
0,5
0,3
0,2
0,8
0,0
0,0
0,2
0,0
0,0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6
% flatten plants
1. Control untreated
2. Poncho Pro seedtreatment
3. Fipronil Granule drill
4. Force 1,5 G Granule drill
5. Fipronil Granule young plant – larva control
6. Force 1,5 G Granule young plant – larva control
7. Poncho Pro + Fipronil Granule young plant – larva control
8. Poncho Pro + Force Granule young plant – larva control
9.( Poncho Pro + Fipronil Granule drill) + Fipronil Granule young plant – larva control
10. ( Poncho Pro + Force Granule drill) + Force Granule young plant – larva control
below ear flatten plants 2008
Diabrotica larva - control Seewinkel 2009
Test - variants:Active
substance Application rate
1. Control untreated
2. Poncho seedtreatmentClothianidin
600 g/l
41,87 ml/Unit (50.000
grains)
3. Poncho Pro seedtreatmentClothianidin
600 g/l 104 ml/Unit
4. Cruiser 350 FS seedtreatmentThiametoxam
350 g/l 90 m/Unit
5. Force 1,5 G Granule drillTefluthrin
15g/kg 13,3 kg/ha - 0.95 g/m
6. Poncho Pro Seedtreatment + Force 1,5 G Granule drill
7. Cruiser 350 FS Seedtreatment + Force 1,5 G Granule drill
8. Force 1,5 G Granule young plant – larva control
9. Poncho Pro + Force 1,5 G Granule young plant – larva control
10. Cruiser 350 FS seedtreatment + Force Granule young plant – larva control
11.Force 1,5 G Granule drill + Force 1,5 G Granule young plant – larva control
12. ( Cruiser 350 FS seedtreatment + Force Granule drill) + Force Granule young plant –
larva control
13. (Poncho Pro seedtreatment + Force 1,5 G Granule drill) + Force Granule young plant -
larva control
Blade tines for granule-
drill – larva control
2,45
2,35
2,3
2,42
2,5
2,57
2,4
2,37
2,5
2,47
2,45
2,25
2,32
0 1 2 3 4 5 6
1. Control untreated
2. Poncho seedtreatment
3. Poncho Pro seedtreatment
4. Cruiser 350 FS seedtreatment
5. Force 1,5 G Granule drill
6. Poncho Pro Seedtreatment + Force 1,5 G Granule drill
7. Cruiser 350 FS Seedtreatment + Force 1,5 G Granule drill
8. Force 1,5 G Granule young plant – larva control
9. Poncho Pro + Force 1,5 G Granule young plant – larva control
10. Cruiser 350 FS seedtreatment + Force Granule young plant –
larva control
11.Force 1,5 G Granule drill + Force 1,5 G Granule young plant – larva
control
12. ( Cruiser 350 FS seedtreatment + Force Granule drill) + Force
Granule young plant – larva control
13. (Poncho Pro seedtreatment + Force 1,5 G Granule drill) + Force
Granule young plant - larva control
root damage IOWA 1 - 6 scale 2009
Damage threshold
IOWA 4 – 5
Wurzelbonitur IOWA Scale 1 - 6 19. Juli 2010
3,72
3,47
3,3
3,98
3,55
3,42
3,37
3,72
3,37
3,62
3,27
3,05
3,9
3,92
3,7
3,7
3,97
3,62
3,47
3,55
0 0,5 1 1,5 2 2,5 3 3,5 4 4,5
Kontrolle
Poncho
Poncho Pro
Cruiser 350 FS
Force Saatrille
Poncho Pro + Force 1,5 G Saatrille
Cruiser 350 FS + Force 1,5 G Saatrille
Force Jungpflanzenbehandlung
Poncho Pro + Force Jungpflanzenbeh.
Cruiser 350 FS + Force 1,5 G Jungpflanzen - Larvenbehandlung
Force 1,5 G Saatrille + Force 1,5 G Jungpflnazen - Larvenbehandlung
(Cruiser 350 FS + Force 1,5 G Saatrille) + Force 1,5 G Jungpflanzen - Larvenbekämpfung
Poncho Pro + Force Saatrille + Force Jungpflanzenbeh.
V-Beizung 1-2010
V-Beizung 2-2010
V-Beizung 3-2010
Grannulat YRC 2894
Granulat NAK 4455 Transfluthrin
Goldor Bait - Saatrille
Goldor Bait - Jungplanzenbehandlung
IOWA 1 - 6
Root damage IOWA 1-6 scale 2010
seedtreatment
Seadtreatment+Granule drill
Young plant larva control
Combined
seedtreatment +
larva control
Larva control
Granule drill
Damage threshold
100
91
96
92
96
102
94
85
84
89
89
94
89
98
104
100
100
103
91
71
50 60 70 80 90 100 110
Ertrag in % Kontrolle (100%)
Kont ro lle
Poncho
Poncho Pro
C ruiser 3 50 FS
Force Saat r i l le
Poncho Pro + Force Saat r i l le
C ruiser 3 50 FS + Force 1,5 G Saat r i l le
Force Jungpf lanzenbehand lung
Poncho Pro + Force Jungpf lanzenbeh.
C ruiser 3 50 FS + Force 1,5 G Jungpf lanzen - Larvenbehand lung
Force Saat r i l le + Force Jungpf lanzenbehand lung
( C ruiser 3 50 FS + Force 1,5 G Saat r i l le) + Force 1,5 G Jungpf lanzen - Larvenbekämpf ung
Poncho Pro + Force Saat r i l le + Force Jungpf lanzenbeh.
V - B eizung 1
V - B eizung 2
V - B eizung 3
V - Granulat 1 Y R C 2 8 9 4
V - Granulat 2 N A K 4 4 55
Go ldor B ait bei A ussaat
Go ldor B ait - Larvenbekämpf ung
Diabroticabekämpfungsversuch Wallern 2010
GD 5 %.....13 % LSD 5%.....13 % from control
Yield in % control (100%)
seedtreatment
Granule drill
Seedtreatment +
Granule drill
Combined treatments
+ larva control
3,1
3
2,8
3,2
3,1
3
2,9
0 1 2 3 4 5 6
IOWA 1-6
Kontrolle
unbehandelt
Poncho
Poncho Pro
Cruiser 350 FS
Force 1,5 G
Saatrille
Poncho Pro +
Force 1,5 G
Saatrille
Cruiser 350 FS +
Force 1,5 G
Saatrille
Wurzelbonituren IOWA Scale 1-6 mehrjährig
Rootdamage IOWA scale 1 – 6 several years
Untreated control
Granule drill
seedtreatment
Damage threshold
3,1
3,1
3
3,1
2,9
2,7
3,1
3
2,9
0 1 2 3 4 5 6
Kontrolle unbehandelt
Force 1,5 G Jungpflanzen
- Larvenbekämpfung
Poncho pro + Force 1,5 G
Jungpflanzen -
Larvenbehandlung
Cruiser 350 FS + Force
1,5 G Jungpflanzen -
Larvenbehandlung
Force 1,5 G Saatrille +
Force 1,5 G Jungpflanzen
- Larvenbehandlung
(Cruiser 350 FS + Force
1,5 G Saatrille) + Force
1,5 G Jungpflanzen -
Larvenbekämpfung
( Poncho Pro + Force 1,5
G Saatrille) + Force 1,5 G
Jungpflanzen -
Larvenbekämpfung
Goldor Bait Saatrille
Saatgut unbehandelt +
Goldor Bait -
Jungpflanzen -
Larvenbehandlung
Wurzelbonituren IOWA Scale 1-6 mehrjährig
IOWA 1-6
Rootdamage IOWA scale 1 – 6 several years
Untreated control
Larva control
Granule drill
Larva control
Damage threshold
Untreated control
100
97
100
98
99
102
100
90
97
92
92
94
98
97
104
50 60 70 80 90 100 110
Kontrolle
Poncho
Poncho Pro
Cruiser 350 FS
Force Saatrille
Poncho Pro + Force Saatrille
Cruiser 350 FS + Force 1,5 G Saatrille
Force Jungpflanzenbehandlung
Poncho Pro + Force Jungpflanzenbeh.
Cruiser 350 FS + Force 1,5 G Jungpflanzen -
Larvenbehandlung
Force Saatrille + Force Jungpflanzenbehandlung
(Cruiser 350 FS + Force 1,5 G Saatrille) + Force 1,5 G
Jungpflanzen - Larvenbekämpfung
Poncho Pro + Force Saatrille + Force Jungpflanzenbeh.
V - Beizung 1
V - Beizung 2
Diabroticabekämpfungsversuch Wallern Ertrag 2008 - 2010
Ertrag in % Kontrolle (100%)
Yield in % unteated control 2008 - 2010
Larva
control
100
100
91
97
96
100
92
98
96
99
102
102
94
100
50 70 90 110
Ertrag in % Kontrolle
Kontrolle
Poncho
Poncho Pro
Cruiser 350 FS
Force Saatrille
Poncho Pro +
Force Saatrille
Cruiser 350 FS
+ Force 1,5 G
Saatrille
Ertrag Diabroticaversuch
% vom Standard mehrjährig
% vom Standard 2010
GD 5 % 2010…….13 %
Yield 2010
Yield 2008-2010
100
100
85
90
84
97
89
92
89
92
94
94
89
98
91
71
50 60 70 80 90 100
Ertrag in % Kontrolle
Kontrolle
Force
Jungpflanzenbehandlung
Poncho Pro + Force
Jungpflanzenbeh.
Cruiser 350 FS + Force
1,5 G Jungpflanzen -
Larvenbehandlung
Force Saatrille + Force
Jungpflanzenbehandlung
(Cruiser 350 FS + Force
1,5 G Saatrille) + Force
1,5 G Jungpflanzen -
Larvenbekämpfung
Poncho Pro + Force
Saatrille + Force
Jungpflanzenbeh.
Goldor Bait bei Aussaat
Goldor Bait -
Larvenbekämpfung
Ertrag Diabroticaversuch % vom Standard mehrjährig
% vom Standard 2010
Wurzelverletzungen bei
Unterfußapplikation
Yield 2010
Yield 2008 -10
Larva control
caused a growth –
reduction
(depression) of 10 –
20 % until harvest +
chlorosis – leaf
yellowing 10 % →
root damage by
tools (blade tines for
granule drill under
roots) possible
Conclusion
crop rotation
2 - 3 years corn – 1 year other plants
The insecticides against the adults are limited in their mode of action and to repeat
Under wet conditions good replacement of rootdamages by corn
