Abstract
We established three trials near DeKalb, Perry, and Urbana, IL, to evaluate Poncho and rootworm-Bt hybrids to control CRW larvae. The experimental design for each trial was an RCB with four replications. Plot size was 10 ft (four rows) by 40 ft. Trials were planted on 6, 8, and 12 May at Perry, DeKalb, and Urbana, respectively. Trials were planted using a four-row, vacuum style planter constructed by Seed Research Equipment Solutions (South Hutchinson, KS). The previous crop at each location was a trap crop (late-planted corn and pumpkins). Seeds were planted at a rate of 36,600 seeds/acre in 30-inch rows at an approximate depth of 1.75 inch. Hybrid information is found in Table 1. Some hybrids in this experiment contained a 5 or 10% refuge-in-the-bag (nonrootworm …
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