How Application Technology for FHB has changed Over the ...
Transcript of How Application Technology for FHB has changed Over the ...
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HOW APPLICATION TECHNOLOGY HOW APPLICATION TECHNOLOGY FOR FHB HAS CHANGED OVER
THE DECADE
Scott HalleyNorth Dakota State UniversityyLangdon Research Extension CenterLangdon, ND
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Discussion
MethodologySpray Systems EvaluatedComponents of Spray Systemsp p y yAdjuvantsChronology of Research Chronology of Research
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Quantification and Qualification Methods
F i id EffiFungicide EfficacyFHB Incidence and Severity; DONYield Test Weight Plump 1000 Kernel Weight Yield, Test Weight, Plump, 1000 Kernel Weight
Secondary MeasurementsDirect Fungicide (Bayer Method)Direct Fungicide (Bayer Method)Area Coverage with Fluorescent Dye and Water and Oil Sensitive PaperDeposition Approximation (Determined by removing a food grade dye included in the spray solution from the grain heads and quantifying with photospectrometer)grain heads and quantifying with photospectrometer)
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Application Technology Research i i ll ’ hin Dr. Marcia McMullen’s Wheat and Barley Scab Greenhouse
Greenhouse Track Sprayer
Unsprayed Plants
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Incandescent Light
Area of Fluorescent Light
Coverage
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Field SamplersField Samplers
Water Sensitive Paper
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Deposition QuantificationDeposition Quantification
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FHB Incidence, Severity, DON, Yield, Test Weight, Plump
Visual Disease Assessment
Plot Harvestingg
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Major Spray Systems Used for Major Spray Systems Used for Applying Fungicide to Small G iGrains
Spraying SystemsSpraying SystemsGround Application Hydraulic DeliveryHydraulic DeliveryAir Delivery
Aerial Application
HardiTwin Air Delivery System
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Aerial ApplicationAerial Application
Air Tractor
Cessna Ag Truck
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Alternative Fungicide Application Spray Systems
Electrostatic
Rotary Atomizery
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System ComponentsSystem Components
S V lSpray VolumeDrop SizeOrifice Delivery Angle (relative orientation to
) target ) and Delivery Distance
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Deoxynivalenol Concentration (PPM) in Barley, Durum, and Hard Red Spring Wheat after Prothioconazole Fungicide Application at Different Spray Volumesp y
Volume Barley Barley Durum HRSW
(GPA) Early 2005 Late 2005 2004 & 2005 2005
5 1.2 2.2 2.4 0.8
10 1.4 1.4 2.3 1.1
20 1.9 1.6 2.7 1.5
Untreated 2 5 3 1 5 5 3 3Untreated 2.5 3.1 5.5 3.3
LSD (p>0.05) 0.4 1.3 1.7 0.8
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Prothioconazole Fungicide Residue Collected on Hard Red Spring Wheat (HRSW) Heads Comparing Fine, “Large” Fine, and “Large” Medium Size Drops Applied With Forward and Medium Size Drops Applied With Forward and Backward Facing Nozzles
Drop Size Spray Volume Prothioconazole Residue
GPA (PPB)GPA (PPB)
Fine (<250) 10 6.2385
“Large” Fine (300‐350) 10 7.4525Large Fine (300 350) 10 7.4525
“Large” Medium (>400) 10 4.835
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Nozzle OrientationNozzle OrientationVertical Nozzles
Forward Angled Nozzles
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Prothioconazole Fungicide Residue Collected on Hard Red Spring Wheat (HRSW) and Barley Heads Comparing Forward and Forward and Backward Facing Nozzles g
P hi lCrop Nozzle Orientation
ProthioconazoleResidue (ppb)
HRSW
Forward 9.744
Forward + Backward 7.522
Barley
Forward 7.351
Forward + Backward 7.406
Fungicide applied with fine drops in 10 GPA spray volume with a tractor mounted sprayer traveling at 6 MPH
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Air Delivery SystemAir Delivery System
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Source of variation and confidence levels for significant differences among deoxynivalenol (DON) levels on barley and d iti h d d i h t (HRSW)deposition on hard red spring wheat (HRSW)
Barley DON HRSW DepositionBarley DON HRSW Deposition
’07 ’08 ’07 ’08
Drop Size 0.6906 0.3822 <0.0001 <0.0001
OrificeAngle 0.2186 0.2806 0.1199 <0.0001
Air StreamSpeed 0.1283 0.6610 0.1487 0.0057
Drop* Angle 0.1958 0.0283 <0.0001 0.0003p g 95 3 3
Drop*Air 0.5468 0.7271 0.4678 0.0374
Angle*Air 0.3722 0.1148 <0.0001 0.0006
Drop*Angle*Air 0 0295 0 5605 0 0293 <0 0001Drop*Angle*Air 0.0295 0.5605 0.0293 <0.0001
% C.V. 53.8 62.4 26.0 18.9
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Deposition and Deoxynivalenol Accumulation after Treatment with Prosaro Fungicide and Adjuvant
Treatment Adjuvant Rate Deposition DON
Absorbance PPM
Untreated 0.042 1.14
No adjuvant 0.112 0.76
Interlock+ Preference 2 fl oz/a + 0 25% v/v 0 224 0 34Interlock+ Preference 2 fl oz/a + 0.25% v/v 0.224 0.34
AG 6011 6 fl oz/a 0.231 0.00
Interlock + AG 3015 2 fl oz/a + 0.5% v/v 0.218 0.12
LSD (p>0.05) 0.046 0.31
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Collaborating TeamsCollaborating Teams
NDSU U i it f NDSU Marcia McMullen Stephen Neate
University of Minnesota
Charla HollingsworthStephen NeateRichard HorsleyVern Hofman
Charla Hollingsworth
USDA‐ARS (College Station Texas)Vern Hofman
Suranjan Panigrahi
Michigan State
Station Texas)Wes Hoffman and Brad Fritzg
University Gary Van Ee
LangdonKevin Misek
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