Efficacy of pirimiphos-methyl,deltamethrin, spinosad and silicoSec against adults and larvae of Tenebrio molitor L. on wheat,barley and maize |
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| Affiliation: | 1. Laboratory of Agricultural Zoology and Entomology, Department of Crop Science, Agricultural University of Athens, 75 Iera Odos str, 11855, Athens, Attica, Greece;2. Laboratory of Organic Chemistry, Department of Chemistry, University of Ioannina, Panepistimioupolis, 45110, Ioannina, Greece;1. Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Departamento de Química, Cátedra de Química Orgánica, Av. Vélez Sarsfield 1611, X5016GCA, Córdoba, Argentina;2. Instituto Multidisciplinario de Biología Vegetal (IMBIV), CONICET-Universidad Nacional de Córdoba, Av. Vélez Sarsfield 1611, X5016GCA, Córdoba, Argentina;1. Department of Crop Science, Faculty of Agriculture, University of Zimbabwe, P.O. Box MP 167, Mt Pleasant, Harare, Zimbabwe;2. Department of Soil Science and Agricultural Engineering, Faculty of Agriculture, University of Zimbabwe, P. O. Box MP 167, Mt Pleasant, Harare, Zimbabwe;1. Laboratory of Agricultural Zoology and Entomology, Department of Crop Science, Agricultural University of Athens, 75 Iera Odos str., 11855, Athens, Attica, Greece;2. Directorate of Plant Produce Protection, Greek Ministry of Rural Development and Food, 150 Sygrou Ave., 17671, Athens, Attica, Greece;3. Benaki Phytopathological Institute, 8 Stefanou Delta str., 14561, Kifissia, Attica, Greece;1. Kahramanmaraş Sütçü İmam University, Agriculture Faculty, Plant Protection Department, Avşar Campus, 46100, Kahramanmaraş, Turkey;2. Laboratory of Entomology and Agricultural Zoology, Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, Phytokou str., Nea Ionia, Magnesia, 38446, Greece;3. Namık Kemal University, Agriculture Faculty, Plant Protection Department, 59030, Tekirdag, Turkey |
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| Abstract: | The yellow mealworm beetle, Tenebrio molitor L. (Coleoptera: Tenebrionidae) is a noxious insect that causes serious damages to stored products worldwide. In the present study, pirimiphos-methyl, deltamethrin, spinosad and silicoSec were evaluated as grain protectans against adults, small and large larvae of this species on wheat, barley and maize at label doses. Mortalities were estimated after 1, 3, 7 and 14 days of exposure. All tested insecticides were able to control T. molitor adults. Complete (100%) mortality of adults was noted after 14 days of exposure on wheat and maize treated with pirimiphos-methyl or silicoSec and barley treated with pirimiphos-methyl, silicoSec and spinosad. Larvae were more tolerant than adults to insecticidal treatments. However, pirimiphos-methyl caused high levels of mortality to small larvae that were 71.1, 91.1 and 60% on wheat, barley and maize respectively after 14 days post exposure. The type of commodity played a significant role on the performance of the tested insecticides. Mortality was higher on barley and wheat than on maize for all tested stages and insecticides. Our results indicate that the life stage of T. molitor and the type of commodity should be taken into account for the management of this species. |
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| Keywords: | Grain protectants Pirimiphos-methyl Deltamethrin Spinosad SilicoSec |
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