Suppression Effects on Populations of the Cabbage Armyworm, Mamestra brassicae, and the Flax Budworm, Heliothis maritima adaucta (Lepidoptera: Noctuidae), by Mating Disruption Using the Sex Pheromone

Abstract

The population suppression effects of the cabbage armyworm, Mamestra brassicae, and the flax budworm, Heliothis maritima adaucta, by mating disruption using the sex pheromone components were examined in the field. Three thousand six hundred sex pheromone dispensers for the mating disruption containing (Z)-11-hexadecenyl acetate and (Z)-11-hexadecenal, which are the sex pheromone components of the diamondback moth, Plutella xylostella, were placed in a 3.6-ha field. In the field with the dispensers, the numbers of egg masses of M. brassicae and the numbers of larvae of H. maritima adaucta were lower than those in a nontreated field, and those near the circumference of the treated field also were the same as those in the center of the field.