Skip to main content

Competency Area 1: Integrated Pest Management (IPM)

PO 7. Recognize how variables including the following are used to calsulate the economic injury level (EIL), and how the EIL changes with a change in any of the variables:
A. Pest density/crop damage relationship
B. Crop value
C. Cost of control
D. Effectiveness of control action

A. Pest density/crop damage relationship


B. Crop value
Information needed:
            Value ($) per bushel, ton, salable unit, etc. = $ _____
            Expected yield (bu., ton, salable unit, etc.) per acre = _____
Calculation:
            Value ($) per salable unit x (Expected Yield / Acre) = crop value ($) / acre

C. Cost of control
Estimate Control Cost (Primary + Secondary Costs)

Primary cost (Pesticide cost)
            Information needed:
            Pesticide use rate (lb., oz, etc.) / acre, i.e. ____(lb., oz, etc.)
            Pesticide price / (lb., oz, etc.) $ _____
            Calculation:
            Pesticide use rate (lb., oz, etc.) / acre, i.e. ____(lb., oz, etc.)
            Pesticide price / (lb., oz, etc.) $ _____ =
            Pesticide cost / Acre, i.e. $_____ / Acre
Secondary cost
            Information needed:
            Pesticide Application cost $_____ / Acre
Primary Pesticide Cost + Secondary Cost = Total Pesticide Application Costs / acre
            i.e. Total Control Cost $ _____ / Acre
Calculate Maximum Allowable Crop Loss (%)
            Total Control cost $ ____ / Acre divided by Crop value $____ / Acre =
            Maximum allowable crop loss ____%

D. Effectiveness of control action

For information see: Performance Objective (2)