Uppercase letters compare averages within each column, and lowercase letters compare averages within each row. Means followed by the same letters do not differ from each other by overlapping confidence intervals generated by the quasi-Poisson model (P <0.05).
nia = not incorporated in the analysis.
TABLE 3 . Confidence intervals associated with the A. gossypii aggregation index (95% CI) in Bt and non-Bt cotton plants submitted to densities of 30 and 60 aphids/cotton plants quantified at 0, 24, 48 and 72 h after the infestation of cotton plants with aphids.