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Insecticidal Effect of Different Plants Extracts Against Wheat Weevil, Sitophilus granarius (L., 1985) (Coleoptera: Curculionidae)

The most common of the pest is Sitophilus granarius L. (Coleoptera: Curculionidae) which causes economically loss of important crops in stored grains. Chemical pesticides are commonly used to control S. granarius. Researchers have recently focused on alternatives to chemical pesticides. There have been a great number of studies on this issue. In this study, the plant extracts of Achillea wilhelmsii C. (Asteraceae), Tanacetum vulgare L. (Asteraceae), Tanacetum parthenium L. (Asteraceae) and Capsicum annuum L. (Solanaceae) were used to determine their toxic effects on S. granarius. Pertaining to the purpose each concentration was applied on 20g wheat. Adult individuals of S. granarius (one day old) were used for this experiment. Wheat applied extract were stored in jars. The experiments were conducted with randomized design with four replicates, including control. Pure water was used for control. Experiment was carried out in laboratory (24 ± 1°C and 60% ± 65 humidity) conditions. A commercial preparation called Gamma-T-ol obtained from the extract of Melaleuca alternifolia (Maiden & Betche) (Myrtaceae) was used as a positive control. As a result, none of the extracts had contact effect. F1 progeny effect of plants extracts on S. granarius was increased with an, increase in concentration. The highest suppression rate was determined at the highest concentration of M. alternifolia. It was followed by the high concentrations of C. annuum, A. wilhelmsii. T. parthenium and T. vulgare respectively. The lowest suppression rate was determined at the highest concentration of T. vulgare extract. It is thought that the plant extracts found to be effective as a result of this study can be used as organic insecticides in IPM programs against wheat weevil.

Plant Extracts, Wheat Weevil, Contact Toxicity, Repellent Effect

APA Style

Pervin Erdoğan. (2023). Insecticidal Effect of Different Plants Extracts Against Wheat Weevil, Sitophilus granarius (L., 1985) (Coleoptera: Curculionidae). American Journal of Entomology, 7(3), 94-99.

ACS Style

Pervin Erdoğan. Insecticidal Effect of Different Plants Extracts Against Wheat Weevil, Sitophilus granarius (L., 1985) (Coleoptera: Curculionidae). Am. J. Entomol. 2023, 7(3), 94-99. doi: 10.11648/j.aje.20230703.12

AMA Style

Pervin Erdoğan. Insecticidal Effect of Different Plants Extracts Against Wheat Weevil, Sitophilus granarius (L., 1985) (Coleoptera: Curculionidae). Am J Entomol. 2023;7(3):94-99. doi: 10.11648/j.aje.20230703.12

Copyright © 2023 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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