B2e Microbials LLC

Wellmark International

David R Sjogren

Robert D Sjogren

Effective sustained release of microbial pesticides in aquatic environments can be achieved by the combination of buoyant particles with a particulate microbial active ingredient. The resulting materials in the form of a particulate have combined density of less than one. The materials are then dispersed into gypsum slurry that is poured into briquette molds, or made into granules or pellets of various sizes, to form a solid, sinking, pest control composition. Once applied in aquatic field sites, the surface of the matrix slowly dissolves, releasing many minute buoyant pesticide laden particles to the water surface over the life of the product. Once at the surface, the particulate microbial pesticide(s) release from the buoyant particles and are distributed throughout the water column to be ingested by susceptible immature filter feeding mosquitoes and pestiferous flies.

Sustained release microbial insect control composition and means

An effective controlled release pest control composition can use activated carbon as the sole release agent. Liquid pesticide is adsorbed into the interior mesopore and macropore space of the activated carbon. Upon contact with water, the pesticide is slowly displaced from the carbon into the environment for appropriate control. The particulate can be used as is or can be combined with liquid or solid diluents. The particle can be formed into larger composites comprising a granule, a pellet, and an agglomerated particle, etc. A variety of pesticides can be used including insecticides, herbicides, fungicides, growth regulators, etc.

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Sherwood, OR, United States of America

David R Sjogren