Insect pest control method

Details Insect pest control method Insect pest control method

A - Human Necessities

01

N

A01N 25/18 (2006.01) A01M 1/20 (2006.01) A01M 13/00 (2006.01) A01N 53/00 (2006.01)

Patent

CA 2197191

An insect pest control method and an apparatus suitable therefor, wherein an air current is supplied to a pesticide-carrying support under non-heating conditions to vaporize and disperse a highly safe pesticidal component from the pesti-cide, thereby controlling flying pest insects. The pesticide-carrying support is prepared by supporting on a support a pesticidal component of a compound hard to evaporate at normal temperature, preferably, at least one pesticidal component selected from com-pounds that have vapor pressures lower than 1 x 10-3 mmHg at 30 °C, a difficulty in evaporating at normal temperature, and boiling points of at least 120 °C/1mmHg. The pesticide support is placed and exposed to a gas current by using a blower device so as to vaporize the pesticidal component from the support into the gas under non-heating conditions. The support is gas permeable so that when the support with a pesticide is placed in the apparatus, the support will not block the gas current going to a vent hole.

L'invention concerne un procédé pour combattre les insectes nuisibles et un appareil pour mettre en oeuvre le procédé, où un courant d'air est appliqué sans chauffage sur un support portant le pesticide de manière à vaporiser et disperser un composant pesticide non nocif, ce qui permet de combattre les insectes volants nuisibles. On prépare le support portant le pesticide en plaçant sur le support un composant pesticide d'un composé s'évaporant difficilement à température normale, par exemple, et de préférence, un composant pesticide choisi parmi les composés qui ont une pression de vapeur inférieure à 1x10<-3> mm de Hg à 30 DEG C, s'évaporant difficilement à température normale, et qui ont des points d'ébullition d'au moins 120 DEG C pour 1 mm de Hg. On expose ensuite le support portant le pesticide à un flux de gaz en utilisant un dispositif ventilateur pour vaporiser le composant pesticide du support dans le gaz, sans chauffage. Le support est perméable aux gaz, si bien que lorsque le support avec le pesticide est placé dans l'appareil, le support ne bloque pas le flux de gaz dirigé vers une sorte d'évent.

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