Start Date

3-12-1992 12:00 AM

Description

The European com borer has been considered a damaging pest of com in Iowa since its arrival in 1942 (Harris & Brindley 1942). Estimates of annual losses to this pest in Iowa alone range from 100 to 500 million dollars (Bergman et al. 1985). Damage by this insect can be either direct or indirect. Direct damage to grain yield results when com borer feeding occurs on the grain itself, or when feeding in the stalk or shank causes breakage below the ear resulting in loss of the entire ear. Indirect losses are usually more important, and result from leaf and stalk feeding which reduces the amount of nutrients directed to the ear; this has also been referred to as "physiological loss" (Showers et al. 1989).

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Dec 3rd, 12:00 AM

Economic Comparison of Biological Control and Insecticidal Control of the European Corn Borer

The European com borer has been considered a damaging pest of com in Iowa since its arrival in 1942 (Harris & Brindley 1942). Estimates of annual losses to this pest in Iowa alone range from 100 to 500 million dollars (Bergman et al. 1985). Damage by this insect can be either direct or indirect. Direct damage to grain yield results when com borer feeding occurs on the grain itself, or when feeding in the stalk or shank causes breakage below the ear resulting in loss of the entire ear. Indirect losses are usually more important, and result from leaf and stalk feeding which reduces the amount of nutrients directed to the ear; this has also been referred to as "physiological loss" (Showers et al. 1989).