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Soybean Rust Yield Loss Prediction Tool
Department of
Plant and Soil Sciences
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Yield Loss Prediction Tool
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Monitor SBR Spread
Soybean Rust and Timely Application of Fungicide
Costs
*
Fungicide
($ Per acre)
*
Application
($ Per acre)
*
Hauling costs
($ per bushel)
Other costs
($ per acre)
Average yield and sale price
*
Predicted potential yield in bushels per acre (e.g. use 5 year average)
*
Expected sale price ($ per bushel)
Growth stage
Select Crop Stage Images
Before Flowering
R2
R3
R4
R5
R6 Early
R6 Late
R7
Simple
Advanced
Epidemic
Scenarios
Yield
(bushels per acre)
Return per acre
Benefits and Returns
With Fungicide
Without Fungicide
With Fungicide
Without Fungicide
Net benefit of spraying $ per acre
% Difference in return per acre
Severe
Moisture and temperature conditions are ideal for rapid disease development and SBR has been detected locally. State Extension Specialist has issued a general spray advisory based on the high likelihood that SBR development and associated yield losses could be extensive in vulnerable crops
Moderate
SBR has been detected locally, but moisture and/or temperature conditions are not ideal for rapid disease development. State Extension Specialist has issued a general spray advisory, but has indicated that serious yield losses are unlikely in vulnerable crops due to reduced disease progress.
Light
SBR has been detected locally, but moisture and/or temperature conditions are not favorable for disease development. State Extension Specialist has not issued a general spray advisory due to the low risk for yield loss in vulnerable crops.
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