Fig. 2.

Number of Pachnoda interrupta captured in traps baited with synthetic sorghum compounds in a July, 2006 and b October, 2006. Unbaited traps caught no insects and were not included in the comparison. GLM: July, (N = 10, F = 78.1, df = 7, 63, P < 0.001); October, (N = 10, F = 114.1, df = 10, 90, P < 0.001). Error bars show the standard error of the mean. Subgroups denoted by different letters are significantly different at α=0.05 (N = 10, Tukey’s b). NT indicates that the treatment was not tested