In recent years, grape colaspis, Colaspis brunnea (Fabricius), larvae have been observed causing significant damage to seed corn by feeding on root hairs. The objective of this study was to test the efficacy of available seed treatments and a soil insecticide to protect the roots of seedling-inbred corn from grape colaspis larval feeding. Six treatments were evaluated consisting of an untreated check, Aztec soil insecticide, and two seed treatments, Poncho and Cruiser, at two rates each. The experiment was carried out in 2004 and 2005 near Reinbeck, Iowa in commercial seed production fields. In 2004, three locations were used. The experiment was a Latin square design with six replications. Response variables measured were stand count, plant height, yield, and beetle emergence. Plant height was measured twice. The number of beetles emerging from each plot was measured using emergence cages checked weekly from late June through August. In 2004 there were significant differences among treatments for plant height on both sampling dates. On the first sampling date, all treatments but the low rate of Cruiser had significantly greater mean plant height than the untreated check. On the second sampling date, all treatments had significantly greater mean plant heights than the untreated check. In these experiments, the seed treatments and soil insecticide provided a degree of protection to inbred seed corn roots. To verify the results, two locations were used 2005 with modifications which included plant heights being measured on three dates, and larval counts as an additional response variable.