Trials to control Western Corn Rootworn (Diabrotica virgifera virgifera) in Austria

Transcription

1 Trials to control Western Corn Rootworn (Diabrotica virgifera virgifera) in Austria Rosner J.: Ofiice of the Lower Austrian Provincial Government, Department of Agricultural Education, Frauentorgasse 72, A Tulln Austria Foltin, K.: Agro ds Austria, Wulkaprodersdorf, Austria

2 Hansag Seewinkel Burgenland 2008

3 Aging - feeding on the ears with reduced fertilization by eating on the silks

4 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

5 Test variants Variant 1.1. und 1.2.: Wide angle nozzle Variant 2: Air assisted sprayer Variant3: Conventonal Spraying with high boom / Teejetnozzles Variant 4: Drag hoses with double nozzles double nozzles on the high boom Spray wide 8 m boom width 15 m Boom width 15 m Boom width 15 m Spray pressure 3 bar Spray pressure 3 bar Spray pressure 3 bar Spray pressure 3 bar application: 10.August 2005; 4.und 17. August 2006, spray water rate 400l/ha Diabrotica Pheromone trap PAL Deutsch Jahrndorf beginning of August 2005 before insicticide spraying

6 Catch result screening control untreated Insecticide efficacy % Control untreated Insecticide efficacy % Spray technologyvariant 2 days after spraying weeks after spraying and change of the trap Variant 1: : wide angle nozzle No datas % Variante : air assited sprayer % % Variante : conventional spraying with high boom and tee jet nozzles % % Variante :drag hoses with double nozzles on the high boom % %

7 Untreated cotrol 2005 Insecticide spraying

8 Results exact trial % Wirkung % efficacy % efficacy days after - 1 Application Luftuntetrstützt air assited sprayer 1 Applikation Konventionell conventional sprayer 1 Applikation Schleppschläuche drag hoses 1 Applikation days after 35spraying Tage nach Applikation

9 Results exact trial % efficacy % efficacy days after - 2 Applications Application Luftunterstützt air assited sprayer 2 Applikationen Konventionell conventional 2 sprayer Applikationen Schleppschläuche drag hoses 2 Applikationen days after spraying

10 Untreated control Air assisted sprayer Pheromone traps 6 days after spraying Conventional spraying with high boom Drag hoses with double nozzles

11 results water 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 = % improved coverage = 9 Spray technlogy - variant Improved coverage Scale Variant 1: : wide angle nozzle Variant 2 : air assited sprayer Variante 3 : conventional spraying with high boom and tee jet nozzles Variante 4 :drag hoses with one nozzle on the high boom 3 4 Variant 4.1.Drag hoses with double nozzles on the high boom 2-3

12 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 = % improved coverage = 9 Air assisted sprayer Drag hoses with 1 double nozzle on the high boom Air assited sprayer Conventional spraying with high boom Drag hoses with 2 double nozzles on the high boom a.50 cm over cornear b. Height corn ear c. 50 cm under corn ear

13 Drag hoses with 1 double nozzle on the high boom Risk of wind drift 50 cm over ear Hight ear Improved coverage: 50 cm unde ear 50 cm over ear Hight ear 50 cm under ear cm over ear Hight ear 50 cm under

14 Drag hoses with unaccaptable spray coating High boom with drag hoses and double nozzles 2005

15 Drag hoses with 2 double nozzles 2006 Dangle of the drag hoses in the corn

16 Air assited spray technology High boom in the corn

17 High clearance tractor Van sprayer with high risk of wind drift

18 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

19 Diabrotica larva -control Seewinkel 2008 Test - variants: Active substance Application rate 1. Control untreated 2. Poncho Pro seedtreatment Clothianidin 104 ml/unit ( grains) 3. Fipronil Granule drill Fipronil 5 kg/ha 4. Force 1,5 G Granule drill Tefluthrin 15g/kg 13,3 kg/ha 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

20 root zone application implement

21 Blade tines for granuledrill larva control

22

23 Diabrotica larva Control ( Poncho Pro + Force Granule drill) + Force Granule young plant larva control 2,3 9.( Poncho Pro + Fipronil Granule drill) + Fipronil Granule young plant larva control 8. Poncho Pro + Force Granule young plant larva control 2,2 2,5 IOWA Scale Poncho Pro + Fipronil Granule young plant larva control 2,5 6. Force 1,5 G Granule young plant larva control 2,4 5. Fipronil Granule young plant larva control 2,1 4. Force 1,5 G Granule drill 2,3 3. Fipronil Granule drill 2. Poncho Pro seedtreatment 2,5 2,5 1. Control untreated 2,9 0,0 1,0 2,0 3,0 4,0 5,0 6,0 IOWA - Scale 1-6 Damage threshold

24 Goose neck % plants ( Poncho Pro + Force Granule drill) + Force Granule young plant larva control 0,3 9.( Poncho Pro + Fipronil Granule drill) + Fipronil Granule young plant larva control 0,8 8. Poncho Pro + Force Granule young plant larva control 1,0 7. Poncho Pro + Fipronil Granule young plant larva control 0,5 6. Force 1,5 G Granule young plant larva control 1,0 5. Fipronil Granule young plant larva control 2,0 4. Force 1,5 G Granule drill 0,5 3. Fipronil Granule drill 1,8 2. Poncho Pro seedtreatment 1,0 1. Control untreated 3,5 0,0 0,5 1,0 1,5 2,0 2,5 3,0 3,5 goose neck % plants

25 below ear flatten plants ( Poncho Pro + Force Granule drill) + Force Granule young plant larva control 0,0 9.( Poncho Pro + Fipronil Granule drill) + Fipronil Granule young plant larva control 0,2 8. Poncho Pro + Force Granule young plant larva control 7. Poncho Pro + Fipronil Granule young plant larva control 0,0 0,0 6. Force 1,5 G Granule young plant larva control 0,8 5. Fipronil Granule young plant larva control 0,2 4. Force 1,5 G Granule drill 0,3 3. Fipronil Granule drill 2. Poncho Pro seedtreatment 0,5 0,5 1. Control untreated 1,5 0,0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 % flatten plants

26 Diabrotica larva - control Seewinkel 2009 Test - variants: Active substance Application rate 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 Clothianidin 600 g/l 41,87 ml/unit ( grains) Clothianidin 600 g/l 104 ml/unit Thiametoxam 350 g/l 90 m/unit Tefluthrin 15g/kg 13,3 kg/ha g/m

27 Blade tines for granuledrill larva control

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29 root damage IOWA 1-6 scale (Poncho Pro seedtreatment + Force 1,5 G Granule drill) + Force Granule young plant - larva control 12. ( Cruiser 350 FS seedtreatment + Force Granule drill) + Force Granule young plant larva control 11.Force 1,5 G Granule drill + Force 1,5 G Granule young plant larva control 10. Cruiser 350 FS seedtreatment + Force Granule young plant larva control 9. Poncho Pro + Force 1,5 G Granule young plant larva control 8. Force 1,5 G Granule young plant larva control 7. Cruiser 350 FS Seedtreatment + Force 1,5 G Granule drill 6. Poncho Pro Seedtreatment + Force 1,5 G Granule drill 5. Force 1,5 G Granule drill 4. Cruiser 350 FS seedtreatment 3. Poncho Pro seedtreatment 2. Poncho seedtreatment 1. Control untreated 2,32 2,25 2,45 2,47 2,5 2,37 2,4 2,57 2,5 2,42 2,3 2,35 2,45 IOWA Damage threshold

30 Root damage IOWA 1-6 scale 2010 Wurzelbonitur IOWA Scale Juli 2010 Larva control Granule drill Goldor Bait - Jungplanzenbehandlung Goldor Bait - Saatrille Granulat NAK 4455 Transfluthrin 3,55 3,47 3,62 Grannulat YRC ,97 V-Beizung V-Beizung ,7 3,7 V-Beizung Poncho Pro + Force Saatrille + Force Jungpflanzenbeh. 3,92 3,9 (Cruiser 350 FS + Force 1,5 G Saatrille) + Force 1,5 G Jungpflanzen - Larvenbekämpfung 3,05 Combined Force 1,5 G Saatrille + Force 1,5 G Jungpflnazen - Larvenbehandlung seedtreatment + larva control Cruiser 350 FS + Force 1,5 G Jungpflanzen - Larvenbehandlung Young plant larva control Poncho Pro + Force Jungpflanzenbeh. Force Jungpflanzenbehandlung Cruiser 350 FS + Force 1,5 G Saatrille 3,27 3,37 3,37 3,62 3,72 Seadtreatment+Granule drill Poncho Pro + Force 1,5 G Saatrille Force Saatrille 3,42 3,55 Cruiser 350 FS 3,98 seedtreatment Poncho Pro 3,3 Poncho 3,47 Kontrolle 3,72 0 0,5 1 1,5 2 2,5 3 3,5 4 4,5 Damage threshold IOWA 1-6

31 Diabroticabekämpfungsversuch Wallern 2010 Goldor Bait - Larvenbekämpfung 71 Goldor Bait bei Aussaat 91 V - Granulat 2 NAK V - Granulat 1 Y RC V - B eizung V - B eizung V - B eizung 1 98 Poncho Pro + Force Saatrille + Force Jungpflanzenbeh. 89 ( Cruiser 350 FS + Force 1,5 G Saatrille) + Force 1,5 G Jungpflanzen - Larvenbekämpfung 94 Force Saatrille + Force Jungpflanzenbehandlung 89 Cruiser 350 FS + Force 1,5 G Jungpflanzen - Larvenbehandlung 89 Combined treatments + larva control Poncho Pro + Force Jungpflanzenbeh. Force Jungpflanzenbehandlung Seedtreatment + Granule drill Granule drill seedtreatment Cruiser 350 FS + Force 1,5 G Saatrille Poncho Pro + Force Saatrille Force Saatrille Cruiser 350 FS Po ncho Pro Po ncho Ko nt ro lle Ertrag in % Kontrolle (100%) GD 5 %...13 % Yield in % control (100%) LSD 5%...13 % from control

32 Wurzelbonituren IOWA Scale 1-6 mehrjährig Rootdamage IOWA scale 1 6 several years Cruiser 350 FS + Force 1,5 G Saatrille 2,9 Poncho Pro + Force 1,5 G Saatrille 3 Granule drill Force 1,5 G Saatrille 3,1 Cruiser 350 FS 3,2 Poncho Pro Poncho 2,8 3 seedtreatment Kontrolle unbehandelt Untreated control 3, Damage threshold IOWA 1-6

33 Wurzelbonituren IOWA Scale 1-6 mehrjährig Rootdamage IOWA scale 1 6 several years Saatgut unbehandelt + Goldor Bait - Jungpflanzen - Larvenbehandlung Goldor Bait Saatrille 2,9 3 Larva control Granule drill ( Poncho Pro + Force 1,5 G Saatrille) + Force 1,5 G Jungpflanzen - Larvenbekämpfung (Cruiser 350 FS + Force 1,5 G Saatrille) + Force 1,5 G Jungpflanzen - Larvenbekämpfung Force 1,5 G Saatrille + Force 1,5 G Jungpflanzen - Larvenbehandlung 2,7 2,9 3,1 Larva control Cruiser 350 FS + Force 1,5 G Jungpflanzen - Larvenbehandlung 3,1 Poncho pro + Force 1,5 G Jungpflanzen - Larvenbehandlung 3 Force 1,5 G Jungpflanzen - Larvenbekämpfung 3,1 Kontrolle unbehandelt Untreated control 3,1 IOWA Damage threshold

34 Untreated control

35 Diabroticabekämpfungsversuch Wallern Ertrag Yield in % unteated control V - Beizung V - Beizung 1 Poncho Pro + Force Saatrille + Force Jungpflanzenbeh. (Cruiser 350 FS + Force 1,5 G Saatrille) + Force 1,5 G Jungpflanzen - Larvenbekämpfung Force Saatrille + Force Jungpflanzenbehandlung Cruiser 350 FS + Force 1,5 G Jungpflanzen - Larvenbehandlung Poncho Pro + Force Jungpflanzenbeh Larva control Force Jungpflanzenbehandlung 90 Cruiser 350 FS + Force 1,5 G Saatrille 100 Poncho Pro + Force Saatrille 102 Force Saatrille Cruiser 350 FS Poncho Pro 100 P oncho 97 Kontrolle Ertrag in % Kontrolle (100%)

36 Ertrag Diabroticaversuch % vom Standard mehrjährig % vom Standard 2010 Cruiser 350 FS + Force 1,5 G Saatrille Poncho Pro + Force Saatrille Force Saatrille Cruiser 350 FS Poncho Pro Poncho Kontrolle Yield Yield Ertrag in % Kontrolle GD 5 % %

37 Ertrag Diabroticaversuch % vom Standard mehrjährig % vom Standard 2010 Goldor Bait - Larvenbekämpfung 71 Wurzelverletzungen bei Unterfußapplikation Goldor Bait bei Aussaat 91 Poncho Pro + Force Saatrille + Force Jungpflanzenbeh (Cruiser 350 FS + Force 1,5 G Saatrille) + Force 1,5 G Jungpflanzen - Larvenbekämpfung Force Saatrille + Force Jungpflanzenbehandlung Cruiser 350 FS + Force 1,5 G Jungpflanzen - Larvenbehandlung Poncho Pro + Force Jungpflanzenbeh Force Jungpflanzenbehandlung Kontrolle Yield Yield Ertrag in % Kontrolle

38 Larva control caused a growth reduction (depression) of % until harvest + chlorosis leaf yellowing 10 % root damage by tools (blade tines for granule drill under roots) possible

39 crop rotation Conclusion 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