Experimental Site Season 2007 2008 Sticky card Visual observation Sticky card Visual observation Destructive sampling Clay Center 0.84 ± 0.07a 0.25 ± 0.03c 0.66 ± 0.08b 1.74 ± 0.73a 2.93 ± 0.20a Concord 0.70 ± 0.05b 0.77 ± 0.05a 0.83 ± 0.13a 0.37 ± 0.03b 0.66 ± 0.11c Mead 0.53 ± 0.05c 0.58 ± 0.04b 0.54 ± 0.06b 1.63 ± 0.16a 1.81 ± 0.13b Means within a column followed by the different letter are significantly different from each other (SNK, P = 0.05)

Table 2: Mean number of O. insidiosus (± S E) in BT transgenic maize hybrids and non transgenic insecticide treated and non-treated hybrid s at C lay Center, Concord, and Mead in Nebraska during the 2007 and 2008 cropping seasons