paarungsstu00f6rungsverfahren for combating insects

摘要

The present invention provides a mating disruption method for the control of insect pests by means of a sex pheromone which can maintain the sex pheromone concentration in the air surrounding a group of plants at a high level for a long period of time while controlling the release rate of the sex pheromone from dispensers at an economical level, and can hence produce a more powerful mating-disrupting effect by use of a given amount of the sex pheromone. Specifically, using dispensers, a sex pheromone is released in a field sprinkled with water so that the soil has a water content of 20 to 100% during the breeding period of insect pests. Thus, the sex pheromone is prevented from being adsorbed to the soil and, as a result, the sex pheromone concentration in the air can be maintained at a high level for a long period of time. Alternatively, a sex pheromone is released in an open field where the surface of the soil is covered with a covering material that is less apt to adsorb sex pheromones than the surface of the soil, or in a house field where the surface of the soil and all or part of the inner surface of the house are covered with a covering material that is less apt to adsorb sex pheromones than the surface of the soil. Thus, the sex pheromone is prevented from being adsorbed to the soil and, as a result, the sex pheromone concentration in the air can be maintained at a high level for a long period of time.