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Evaluation of toxicity of five medicinal plant extracts on maize weevil, Sitophilus zeamais (Mots.) (Coleoptera: Curculionidae) on stored maize

Author

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  • Fatematuzzjohora
  • Ahad, Abdul
  • Rubiya Khatun, Most
  • Hossain, M.A.

Abstract

The experiments were conducted in the laboratory of the Department of Entomology and Department of Agricultural Chemistry, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur during May-December 2017 to evaluate the toxicity of five medicinal plant extracts (water hyacinth Eichhornia crassipes, swamp smartweed Polygonum coccineum, ariach Cassia tora, wild capsicum Croton bonplandianum and hill glory bower Clerodendrum viscosum) against maize weevil, Sitophilus zeamais (Mots.) on stored maize. The wild capsicum extract provided the highest average mortality (93.33 ± 3.33), following the hill glory bower (86.67 ± 3.33) and swamp smartweed (86.67 ± 3.33) at 3% concentration. But it was zero in control. The average numbers of lowest numbers of adult emergence among the five weed extracts were found in wild capsicum (3.00 ± 0.39) following Swamp smartweed (5.11 ± 0.95) at 3% concentration; whereas, in control it was (54.00 ± 1.15). The lowest percent of seed damage were found in wild capsicum (3.00 ± 0.38%) following Swamp smartweed (4.22 ± 0.58). But in control, it was 44.00 ± 1.15. Repellency class of different plant extracts at different concentration level varied between I to IV. But the hill glory bower at 3.0% showed statistically best as it showed the highest repellency rate was 66.0 ± 5.31% and the group were IV. However, the toxicity order was wild capsicum > swamp smartweed > hill glory bower > water hyacinth >, ariach.

Suggested Citation

  • Fatematuzzjohora & Ahad, Abdul & Rubiya Khatun, Most & Hossain, M.A., 2021. "Evaluation of toxicity of five medicinal plant extracts on maize weevil, Sitophilus zeamais (Mots.) (Coleoptera: Curculionidae) on stored maize," International Journal of Agricultural Sciences and Technology (IJAGST), SvedbergOpen, vol. 1(2), May.
    • Handle: RePEc:ags:ijag24:340577
    DOI: 10.22004/ag.econ.340577
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    References listed on IDEAS

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    1. McDonald, Lehman L. & Guy, Richard H. & Speirs, Roy D., 1970. "Preliminary Evaluation of New Candidate Materials as Toxicants, Repellents, and Attractants Against Stored-Product Insects—I," Marketing Research Reports 312345, United States Department of Agriculture, Agricultural Marketing Service, Transportation and Marketing Program.
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    Crop Production/Industries;

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