REPELLENT FOR IMAGE OF LONG-HORNED BEETLE

摘要

PURPOSE:To provide the titled repellent containing the component of neem extracted with an organic solvent, etc. as an active component, safe to human body, having strong repelling effect to the image of long-horned beetle, and exibiting excellent effect to control the movement of the image and suppress the feeding and the oviposition of the beetle. CONSTITUTION:The bark, leaf, twig, fruit and/or seed of natural neem known as Indian azedarac (Melia azadirachta), etc. are dried, cut to small pieces, added with an organic solvent such as alcohol, ether, hydrocarbon, etc. or with a hydrated organic solvent, and extracted sufficiently by conventional extraction process at room temperature or under heating. The extraction residue is removed by filtration, and the solvent is distilled off from the filtrate or the filtrate is concentrated to obtain a neem oil. The agent is used as it is or in combination with proper carrier, in the form of powder, liquid or solid, and applied to the area to be treated. EFFECT:It can be applied repeatedly to a wide area without causing the environmental pollution, the disturbance of the biota including the natural enemy, nor the poisoning of the operator, etc.