Pesticide delivery system

A - Human Necessities – 01 – N

Patent

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Details

A01N 25/26 (2006.01) A01N 25/04 (2006.01) A01N 47/34 (2006.01) A01N 47/44 (2006.01) A01N 59/06 (2006.01) A01N 59/20 (2006.01) A01N 63/00 (2006.01)

Patent

CA 2424181

In one embodiment, the present invention relates to a pesticide delivery system, containing a continuous film having a thickness from about 1 µm to about 1,000 µm and noncontinuous areas having sizes less than about 100 µm, the continuous film containing a particulate material wherein at least 90 % by weight of the particulate material has a particle size of about 10 microns or less, and a pest control agent at least partially coating the particulate material. In another embodiment, the present invention relates to a method of delivering a pest control agent to a target organism, involving the steps of applying to at least a portion of a surface of a plant an effective amount of finely divided particulate material at least partially coated with the pest control agent, the particulate material containing from about 25 % to about 100 % by weight of a heat treated particulate material, wherein the partially coated finely divided particulate material as applied permits an exchange of gases on the surface of the plant and the partially coated finely divided particulate material forms a continuous film over the portion of the plant surface to which it is applied, and a maximum average size of openings in the continuous film is less than about 100 µm.

Un mode de réalisation de la présente invention concerne un système d'application d'un pesticide comprenant une pellicule continue d'une épaisseur comprise entre 1µm et 1'000 µm environ et des zones discontinues de tailles inférieures à 100 µm environ, cette pellicule continue renfermant une matière particulaire dont au moins 90 % en masse de la matière à une dimension de particule inférieure ou égale à 10 microns environ, et un agent antiparasitaire enrobant au moins en partie la matière particulaire. Un autre mode de réalisation de la présente invention concerne un procédé d'application d'un pesticide sur un organisme cible consistant à appliquer sur une partie au moins de la surface d'une plante une quantité nécessaire de matière particulaire finement divisée au moins en partie enrobée à l'aide dudit agent antiparasitaire, la matière particulaire renfermant entre 25 % et 100 % en masse environ d'une matière particulaire traitée thermiquement. Cette matière particulaire finement divisée en partie enrobée permet l'échange de gaz à la surface de la plante, car elle forme une pellicule continue sur la partie de la surface de la plante sur laquelle elle est appliquée. La taille maximale moyenne des ouvertures dans la pellicule continue est inférieure à 100 µm environ.

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