Fig. 7. Gompertz 3 in Seasonal phenology of Sirex nigricornis (Hymenoptera: Siricidae) in Arkansas with implications for management of Sirex noctilio

Fig. 7. Gompertz 3-parameter model fit to all 5 Sirex nigricornis trapping seasons; a = 1.0628, b = 0.0575, c = 309.5517; R2 = 0.8582. The inflection point for the overall model, encompassing 5 trapping seasons, was 310 d, or 6 Nov. Legend indicates which data points correspond to which year.