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Comparing the Effectiveness of Garlic (Allium sativum L.) and Hot Pepper (Capsicum frutescens L.) in the Management of the Major Pests of Cabbage Brassica oleracea (L.)

Author

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  • Baidoo, P. K.
  • Mochiah, M. B.

Abstract

The use of chemical insecticides in crop production has resulted in increased food production in Africa, but their use has resulted in the destruction of beneficial organisms and development of resistance by some insects to the insecticides. The effectiveness of garlic Allium sativum and hot pepper, Capsicum frutescens in controlling the pests of cabbage, Brassica oleracea was evaluated. These botanicals were compared with a standard chemical insecticide Attack® (Emamectin benzoate). The experiment was conducted in a randomized complete block design, with 3 treatments and a control, each of which was replicated 3 times. Plutella xylostella, Brevicoryne brassicae, Hellula undalis and Trichoplusia ni were found on cabbage plants. Significantly fewer of them were found on the treated plants than the control plants. The use of the plant extracts resulted in a reduction in mortality ranging from 10.76% to 55.94%. Fewer natural enemies of B. brassicae were sampled on the insecticide-sprayed plots than the garlic and pepper-sprayed plots. The cost of protecting cabbage plants from insect infestation using Attack was higher than the botanicals. Garlic-treated plots recorded the highest cost: benefit ratio of 1:16 while Attack®-treated plots recorded the least of 1: 9.2. The control effects of the botanicals compared favourably with that of the chemical insecticides. Thus these botanicals can be used as substitutes to chemical insecticides.

Suggested Citation

  • Baidoo, P. K. & Mochiah, M. B., 2016. "Comparing the Effectiveness of Garlic (Allium sativum L.) and Hot Pepper (Capsicum frutescens L.) in the Management of the Major Pests of Cabbage Brassica oleracea (L.)," Sustainable Agriculture Research, Canadian Center of Science and Education, vol. 5(2).
    • Handle: RePEc:ags:ccsesa:234995
    DOI: 10.22004/ag.econ.234995
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    Cited by:

    1. Santoshi Malla & Uttam Rosyara & Bibash Neupane & Birat Sapkota, 2021. "Feasibility Study Of Organic Vegetable Farming In Baitadi District," Food and Agri Economics Review (FAER), Zibeline International Publishing, vol. 1(2), pages 88-92, June.
    2. Patrick Maada Ngegba & Gaofeng Cui & Muhammad Zaryab Khalid & Guohua Zhong, 2022. "Use of Botanical Pesticides in Agriculture as an Alternative to Synthetic Pesticides," Agriculture, MDPI, vol. 12(5), pages 1-24, April.
    3. Nelson Mpumi & Revocatus S. Machunda & Kelvin M. Mtei & Patrick A. Ndakidemi, 2020. "Selected Insect Pests of Economic Importance to Brassica oleracea , Their Control Strategies and the Potential Threat to Environmental Pollution in Africa," Sustainability, MDPI, vol. 12(9), pages 1-22, May.
    4. Angela G. Mkindi & Richard Coe & Philip C. Stevenson & Patrick A. Ndakidemi & Steven R. Belmain, 2021. "Qualitative Cost-Benefit Analysis of Using Pesticidal Plants in Smallholder Crop Protection," Agriculture, MDPI, vol. 11(10), pages 1-13, October.
    5. Agbor, David T. & OBEN, Tom T. & Afoh, Lesly T. & Eboh, Kizito S. & Kum, Yanik F. & Fon, Collins T. & Dohnji, John D., 2022. "Comparative Study Of Botanicals And Synthetic Insecticide On The Control Of Insect Pests And Diseases Of Cowpea," International Journal of Agriculture and Environmental Research, Malwa International Journals Publication, vol. 8(2), May.

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