Annular sustained release pheromone-dispenser and its installation tool

摘要

Herein disclosed is an annular sustained release pheromone-dispenser which has a shape favorable for packaging and transportation, can easily be installed, can maintain its installed condition over a long time period and can easily be handled even after use without any trouble. Also provided is a tool for easily and rapidly installing a pheromone-dispenser at elevated spots of, for instance, fruit trees. The sustained release pheromone-dispenser comprises a plurality of plastic tubes 2a and 2b arranged in parallel and capable of being semi-resiliently deformed, whose ends 3 are connected together by fusion and whose central portions are independent and can form a annular space therebetween by pulling them apart from one another; and a liquid synthetic sex pheromone 1 enclosed in these plurality of plastic tubes 2a, 2b without impairing the pheromone-release capacity. The tool 37 for installing an annular sustained release pheromone-dispenser has hooks 32 for attaching or detaching the annular sustained release pheromone-dispenser which are pulled apart from each other. The hooks 32 are positioned on both upper ends of the wire and the lower end 38 of the wire is secured to the top end of a rod 33.