Economic Thresholds Calculators

First Generation Scouting     Second Generation Scouting

How many of the following do you find per plant?

First Generation Scouting This threshold is based on OMAF's ECB Economic Threshold Calculations for the Univoltine Threshold, which assumes 5% yield loss per live larvae.
Number of plants with shotholes
Number of plants checked
Average number of live larvae per plant		Unfurl one of the shotholed plants and look for live larvae
Expected yield		bu/ac
Crop value		$/bu
Pesticide treatment effectiveness		% (75% is an average, use another value if desired)
		Calculate Reset

Results:
Potential % yield loss
Potential loss in dollars per acre
Preventable loss in dollars per acre*
* Compare this figure to your treatment cost per acre plus application to determine if a treatment is cost effective.