Since 2015, the stink locust (Zonocerus variegatus) population has been proliferating in the Mawanga sector, in the territory of Kasongo Lunda, an administrative entity in the province of Kwango in the Democratic Republic of Congo. This insect ravages food crops and fruit trees, devouring their leaves and bark and causing the host plant to wither. To assess the insecticidal action of four total extracts based on Nicotiana tabacum, Tephrosia vogelii, Zingiber officinale and Capsicum frutescens on the stink locust, a field trial involving a cassava crop was set up between November 2020 and December 2021 in the Emmaüs village in the Mawanga sector, Kasongo Lunda territory, in the Democratic Republic of Congo. Tobacco and ginger showed the lowest incidence and severity of locust damage. For the latter parameter, their performance was equal to that of deltamethrin. These two plant species showed potential for use in the manufacture of biopesticides to help farmers control the locust.
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