Method for controlling injurious insect

摘要

A method for controlling an injurious insect is herein disclosed, which comprises disturbing the copulative communication of an injurious insect to prevent proliferation of the insect by distributing a source of the sex pheromone thereof over a field to be controlled to make the sex pheromone release from the source distributed in the field, wherein a source of the sex pheromone having a high effective component-release rate per unit time is distributed over the central region of the field at a low density while a source of the sex pheromone having a low effective component-release rate per unit time is distributed over the peripheral region of the field at a high density. A sex pheromone-release agent having an effective component-release rate ranging from 0.01 to 2 g/day may be distributed over the central region of the field at a density ranging from 1 to 50 locations/ha, while a sex pheromone-release rope having an effective component-release rate ranging from 5 to 250 mg/m/day may be substantially uniformly stretched around the peripheral region of the field at a density ranging from 10 to 150 m/ha.