Sampling Culex tarsalis (Diptera: Culicidae) Immatures on Rice Fields Treated with Combinations of Mosquitofish and Bacillus thuringiensis H-14 Toxin

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Data from field collections of third- and fourth-stage larvae of Culex tarsalis Coquillett and pupae were used to calculate expected frequencies based on the negative binomial distribution. The data fit the negative binomial with a dispersion constant (kc) of 0.0525. The decision limits for a sequential sampling plan were then calculated. Aerial applications of Bacillus thuringiensis Berliner serotype H-14 toxin controlled C. tarsalis larvae without producing any detrimental effects to predators. The best control was obtained on a field treated with B. thuringiensis H-14 toxin and stocked with mosquito fish.

Document Type: Research Article

Publication date: February 1, 1983

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