SEDL / STP / STP1183-EB / STP25143S

Comparative Performance of Culigel^® Superabsorbent Polymer-Based Pesticide Formulations

Levy, R
Research Entomologist/Coordinator, Research Assistant and Director, Lee County Mosquito Control District, Fort Myers, FL

Nichols, MA
Research Entomologist/Coordinator, Research Assistant and Director, Lee County Mosquito Control District, Fort Myers, FL

Miller, TW
Research Entomologist/Coordinator, Research Assistant and Director, Lee County Mosquito Control District, Fort Myers, FL

Pages: 23    Published: Jan 1993

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Abstract

Nonagglomerated (granules) or agglomerated (disquets) Culigel^® Type IV or V superabsorbent polymer-pesticide compositions were evaluated against aquatic or terrestrial pests in a series of controlled-release bioassays. Bioactive agents included in the granular single-or joint-action pesticide formulations for use against mosquito larvae and/or aquatic weeds were bacteria or growth regulators and/or a herbicide. Bait-pesticide disquet formulations were evaluated against German cockroach nymphs or adults. Results of aquatic tests indicated that Culigel^® Type IV granules can be used as single- or dual-product matrices for entrapment/encapsulation and prolonged controlled release of mosquito larvicides and/or herbicides. Comparative performance studies showed that single- or joint-action pesticide slow-release profiles from Culigel^® Type IV granules were regulated or controlled in aquatic habitats by the type and concentration of a dispersant or two- or three-component dispersant complex. Long-term release of pesticides encapsulated within Culigel^® Type V disquet formulations was demonstrated against immature and adult cockroaches.