1. ______ day of scouting            -  ______ day egg laying started            =  ______ days after first eggs laid
2. ______ egg masses found           /  ______ (for middle 7-leaf samples)       =  ______ adjusted egg masses
3. ______ adjusted egg masses        /  ______ plants examined                   =  ______ egg masses per plant
4. ______ days after first eggs laid &  ______ egg masses per plant              =  ______ larvae per planta
5. ______ larvae per plant           X  ______ yield loss per larvab,c           =  ______ yield loss
6. ______ yield loss                 X  ______ expected yield (bushels per acre) =  ______ bushels loss per acre
7. ______ bushels loss per acre      X  ______ price per bushel                  = $______ loss per acre
8. ______ loss per acre              X  ______ percent controlb                  = $______ preventable loss/acre
9. ______ preventable loss/acre      -  ______ cost of control per acre          = $______ profit (loss) per acre

aTake from Table 3.
bAll percents must be written using decimals (i.e., 50 percent = 0.5).
cUse 0.04 for pollen-shedding corn, 0.031 for blister-stage corn, or 
 0.024 or dough-stage corn.

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