author(s)
Amel Ben Hamouda, Ikbal Chaieb, Lanja Zouari, Khaoula Zarrad, Asma Laarif

abstract
Present study was analyzed to determine the toxicological effects of Urginea maritime at different concentrations (0.1, 1 and 10%) against larvae and adults of Tribolium castaneum. In the present study it was observed that by tropical application, leaf extract shows highest toxicity to larvae as compared to adults. LC₅₀ value and LC₉₀ value was found to be 27.8g/L and 55.1g/L respectively in probit analysis of leaf extract for the larvae. However the bulb extract was found to be more toxic, LC₅₀ and LC₉₀ values were much lesser with 16.6 and 34.4g/L respectively. The present study also determined the in vivo toxicity of leaf as well as bulb extracts on larvae and the LC₅₀ value was found to be 92 and 19.3g/L respectively. Similarly in residual film toxicity, LC₅₀ and LC₉₀ were found to be 87.9 and 495.4g/L, respectively. However no mortality was observed in the present study in the control experiment.