In vitro activity of soybean extract on cocoa disease pathogens (Erythricium salmonicolor and Marasmiellus scandens) and termite pest (Microtermes subhyalinus)
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Date
2022
Journal Title
Journal ISSN
Volume Title
Publisher
Cogent Food & Agriculture
Abstract
This study evaluated the antifungal and insecticidal properties of soybean
extract on Marasmiellus scandens (causal pathogen of white thread blight disease
on cocoa), Erythricium salmonicolor (causal pathogen of pink disease of cocoa) and
termite (Microtermes subhyalinus). Agar plate test was used to determine the
inhibitory activity of the extract on mycelial growth of the pathogens while
a contact toxicity bioassay was conducted on the termites. Extract of the soybean
reduced mycelial growth in a dose-dependent pattern, with 20% of the extract
attaining the highest inhibition. Percentage inhibition of 80.4 and 86.8 were
recorded for E. salmonicolor and M. scandens, respectively after 7 days of incuba tion. The IC50 values ranged between 0.64–2.44% and 0.12–0.45% for
E. salmonicolor and M. scandens respectively. However, activity of the extract on the
termite was low, with an LC50 of 15.42% after 24 hours of exposure. The effect of
the extract on the fungal pathogens indicates that it could be further explored
towards the development of a plant-based control method against white thread
blight and pink diseases of cocoa in Ghana.
Description
Research Article
Keywords
Antifungal activity, inhibition, soybean, cocoa disease
Citation
To cite this article: Yahaya Bukari, Silas W. Avicor, Godfred Awudzi, Michael K. Ainooson, Eric K. Asare & Ishmael Amoako-Attah (2022) In vitro activity of soybean extract on cocoa disease pathogens (Erythricium salmonicolor and Marasmiellus scandens) and termite pest (Microtermes subhyalinus), Cogent Food & Agriculture, 8:1, 2147474, DOI: 10.1080/23311932.2022.2147474