International Journal of Science, Technology and Society

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Effect of Diatomaceous Earths on Mortality, Progeny and Weight Loss Caused by Three Primary Pests of Maize and Wheat in Kenya

Received: 03 February 2015    Accepted: 04 March 2015    Published: 17 April 2015
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Abstract

The Kensil fine (KF) dust was evaluated under laboratory conditions for the control of three important storage insect pests of maize and wheat. Serial concentrations of KF, Dryacide (DA) and Wood ash (Ash) were admixed with 100g of maize or wheat in ventilated glass jars. Mortality of S. zeamais, P. truncatus and R. dominica was assessed at 7, 14, 28, 56 and 84 days interval after grain treatment. At 28 days, all the three dusts effectively controlled S. zeamais with 95% - 100% mortality while only DA was effective against P. truncatus. Both KF and Ash, with 84% and 92% mortality, did not reach the threshold required for P. truncatus. Mortality in R. dominica only peaked after 56 days but again only DA treatment was effective at 84 days. The delayed effect of the Diatomaceous earths (DE) and ash treatments appear to contribute to the higher damage inflicted; hence more weight loss than was expected. At 28 days mean sample weight loss by S. zeamais was 4.5% while P. truncatus and R. dominica caused 4.2% and 3.5% respectively. The emerged progeny after 14 days exposure to the three dusts was different for each pest with DA producing the least and KF the most. These results formed the criteria on which to base future trials under simulated farmer storage practice.

DOI 10.11648/j.ijsts.20150303.12
Published in International Journal of Science, Technology and Society (Volume 3, Issue 3, May 2015)
Page(s) 76-82
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Diatomaceous Earths, Delayed Effect, Grain Storage, Farmer Practice, Pest Control

References
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Author Information
  • Kenya Agricultural Research Institute (KARI), Nairobi, Kenya

  • Kenya Agricultural Research Institute (KARI), Nairobi, Kenya

  • Kenya Agricultural Research Institute (KARI), Nairobi, Kenya

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    Ngatia Christopher Mugo, Mbugua John Nderi, Mutambuki Kimondo. (2015). Effect of Diatomaceous Earths on Mortality, Progeny and Weight Loss Caused by Three Primary Pests of Maize and Wheat in Kenya. International Journal of Science, Technology and Society, 3(3), 76-82. https://doi.org/10.11648/j.ijsts.20150303.12

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    Ngatia Christopher Mugo; Mbugua John Nderi; Mutambuki Kimondo. Effect of Diatomaceous Earths on Mortality, Progeny and Weight Loss Caused by Three Primary Pests of Maize and Wheat in Kenya. Int. J. Sci. Technol. Soc. 2015, 3(3), 76-82. doi: 10.11648/j.ijsts.20150303.12

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    AMA Style

    Ngatia Christopher Mugo, Mbugua John Nderi, Mutambuki Kimondo. Effect of Diatomaceous Earths on Mortality, Progeny and Weight Loss Caused by Three Primary Pests of Maize and Wheat in Kenya. Int J Sci Technol Soc. 2015;3(3):76-82. doi: 10.11648/j.ijsts.20150303.12

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  • @article{10.11648/j.ijsts.20150303.12,
      author = {Ngatia Christopher Mugo and Mbugua John Nderi and Mutambuki Kimondo},
      title = {Effect of Diatomaceous Earths on Mortality, Progeny and Weight Loss Caused by Three Primary Pests of Maize and Wheat in Kenya},
      journal = {International Journal of Science, Technology and Society},
      volume = {3},
      number = {3},
      pages = {76-82},
      doi = {10.11648/j.ijsts.20150303.12},
      url = {https://doi.org/10.11648/j.ijsts.20150303.12},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.ijsts.20150303.12},
      abstract = {The Kensil fine (KF) dust was evaluated under laboratory conditions for the control of three important storage insect pests of maize and wheat. Serial concentrations of KF, Dryacide (DA) and Wood ash (Ash) were admixed with 100g of maize or wheat in ventilated glass jars. Mortality of S. zeamais, P. truncatus and R. dominica was assessed at 7, 14, 28, 56 and 84 days interval after grain treatment. At 28 days, all the three dusts effectively controlled S. zeamais with 95% - 100% mortality while only DA was effective against P. truncatus. Both KF and Ash, with 84% and 92% mortality, did not reach the threshold required for P. truncatus. Mortality in R. dominica only peaked after 56 days but again only DA treatment was effective at 84 days. The delayed effect of the Diatomaceous earths (DE) and ash treatments appear to contribute to the higher damage inflicted; hence more weight loss than was expected. At 28 days mean sample weight loss by S. zeamais was 4.5% while P. truncatus and R. dominica caused 4.2% and 3.5% respectively. The emerged progeny after 14 days exposure to the three dusts was different for each pest with DA producing the least and KF the most. These results formed the criteria on which to base future trials under simulated farmer storage practice.},
     year = {2015}
    }
    

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  • TY  - JOUR
    T1  - Effect of Diatomaceous Earths on Mortality, Progeny and Weight Loss Caused by Three Primary Pests of Maize and Wheat in Kenya
    AU  - Ngatia Christopher Mugo
    AU  - Mbugua John Nderi
    AU  - Mutambuki Kimondo
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    PY  - 2015
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    DO  - 10.11648/j.ijsts.20150303.12
    T2  - International Journal of Science, Technology and Society
    JF  - International Journal of Science, Technology and Society
    JO  - International Journal of Science, Technology and Society
    SP  - 76
    EP  - 82
    PB  - Science Publishing Group
    SN  - 2330-7420
    UR  - https://doi.org/10.11648/j.ijsts.20150303.12
    AB  - The Kensil fine (KF) dust was evaluated under laboratory conditions for the control of three important storage insect pests of maize and wheat. Serial concentrations of KF, Dryacide (DA) and Wood ash (Ash) were admixed with 100g of maize or wheat in ventilated glass jars. Mortality of S. zeamais, P. truncatus and R. dominica was assessed at 7, 14, 28, 56 and 84 days interval after grain treatment. At 28 days, all the three dusts effectively controlled S. zeamais with 95% - 100% mortality while only DA was effective against P. truncatus. Both KF and Ash, with 84% and 92% mortality, did not reach the threshold required for P. truncatus. Mortality in R. dominica only peaked after 56 days but again only DA treatment was effective at 84 days. The delayed effect of the Diatomaceous earths (DE) and ash treatments appear to contribute to the higher damage inflicted; hence more weight loss than was expected. At 28 days mean sample weight loss by S. zeamais was 4.5% while P. truncatus and R. dominica caused 4.2% and 3.5% respectively. The emerged progeny after 14 days exposure to the three dusts was different for each pest with DA producing the least and KF the most. These results formed the criteria on which to base future trials under simulated farmer storage practice.
    VL  - 3
    IS  - 3
    ER  - 

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