Introduction to Granular Carriers, Granular Pesticide Formulations, and Processing

TL;DRAbstract

Granular pesticides are grains or pellets containing pesticidal toxicants diluted to the desired concentration by mixing with other inert and functional ingredients. They are processed to give fairly close particle size distributions with the objective of facilitating application at optimum rates. Formulations and preparations of granular pesticides vary widely but the preparation method generally falls into one of four categories: (1) impregnating on presized sorptive carriers, (2) sticking on presized carriers, (3) formulating and postforming, as in extrusion and agglomeration, and (4) postforming on a core. In addition to toxicants, carriers, binders, deactivators, dispersants, wetting agents, surfactants, core materials, and solvents are employed. Historically the commercial success of a toxicant has depended on the forms that are available for toxicant delivery. The use of granular formulations followed on the heels of emulsion concentrates, wettable powders, and dusts to achieve

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