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Mean node injury scale (NIS) rating ± standard error of corn hybrids with or without soil-applied insecticide (SAI), presented by level of corn rootworm injury to Cry3-expressing corn (normal or unexpected) and under high (>2 NIS), moderate (1–2 NIS), or low (<1 NIS) root feeding pressure. NIS ratings with the same letter do not differ significantly (LSD, α = 0.05).
