Efficacy of Nets Coated with Different Concentrations of Alpha-Cypermethrin against Two Major Pests of Stored Tobacco

In the present study, we examined insecticidal effect of Carifend® (BASF AG, Ludwigshafen, Germany; 163.2 mg m−2), an alpha-cypermethrin-coated polyester net, as well Carifend-like nets containing different rates alpha-cypermethrin, specifically 10, 30, 80, and 325 m−2, against two major stored tobacco insect pests, i.e., Lasioderma serricorne (Fabricius) (Coleoptera: Anobiidae) Ephestia elutella (Hübner) (Lepidoptera: Pyralidae). The were glued at bottom plastic Petri dishes, adults L. E. exposed to for exposure times (e.g., 1, 5, 15, 60, 90, 120 min, 12 24 h). After each interval, mortality was recorded, whereas after final evaluation, alive individuals transferred untreated delayed recorded additional period 3, 7 d. Based on our results, efficient control both species achieved with all nets, even one a lower concentration alpha-cypermethrin (10 m−2). High treatments, indicating that short tested can lead mortality. For instance, 30 reached 40% 1 d min. Moreover, highest (325 70% 99% post h elutella, respectively. these data, Carifend®, rest tested, be used alternative insecticide method species, elutella. Insecticide treated in areas which fumigants contact insecticides are not accessible.