Comparative toxicity of four formulations of commercially used control agents to the red flour beetle, tribolium castaneum (Herbst) under laboratory conditioinsl [electronic resource]

Includes references.

Four formulations of commercially used control agents were tested under laboratory conditions on adults of the red flour beetle, Tribal/um castaneum. The bioassays were carried out on wheat grains, at 25 ± I °C and 70 ± 5°/. RH. Compounds were applied at the dose rates of 250, 500, 750 and 1000 mg/L for Fenvalerate, 2500, 5000, 10000 and 20000 mg/L for DioRy, 25, 50, 100 and 200 mg/L for Neem and 25, 50, 75 and 100 mg/L for Dia.inon. Adult mortality was assessed every day for 10 days and LC,., LC,,, LT,. and LT" were calculated. Mortality was 100% on wheat treated with 1000 mg/L of Fenvalerate, and 50, 75 and 100 mgIL of diazinoD 10 days after exposure. Diazinon was the most effective against To castaneum followed by Neem, Fenvalerate and then Biofly, where the recorded LCso values were 46.25, 78.30, 271.12 and 3.05x10· mg/L after 4, 8, 7 and 6 days of exposure,

Summary in Arabic.

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