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Volume 12 Number 1 January 2026

Effectiveness of Biopesticides in Vitro Agains Colletotrichum sp Responsible Mango of Anthracnose (Mangifera indica L) in Burkina Faso


Authors: Harouna Ranch Koba
Pages: 1-7
DOI: doi.org/10.32861/jac.12.1.7
Abstract
In Burkina Faso, Anthracnose is the main post-harvest disease which causes enormous economic losses due to the rejection of mangoes export. The present study aims to assess efficiency in vitro of biopesticides constituted of four essential oils of Lippia multiflora, Ocimum graticimum, Eucalyptus camaldulensis, Cymbopogon citratus at concentrations of 600 ppm, 800 ppm, 1000 ppm and 1200 ppm and aqueous extracts formulated based on Carica papaya, Appichi and Cymbopogon giganteus at concentrations of 15%, 30% and 60% against Colletotrichum sp responsible of mango anthracnose in Burkina Faso. The experimental device is a complete randomization of eight (8) treatments and five (5) repeatings for each biopesticide tested. The results exhibited an effectiveness of the antifungal activity of all the essential oils tested. The doses of 1000ppm and 1200ppm were the most effective with mycelium inhibition rates reaching 99%. The four oils have been effective with 1200 ppm as minimum inhibition concentration. The use of aqueous extracts at concentrations of 60% exhibited an inhibition rate of Colletotrichum sp mycelial growth from 80 % to 99 %. The most effective biopesticides were essential oil from O. graticimum with an inhibition rate of 93% at 600 ppm and the Appichi extract with an inhibition rate of 80% at concentrations of 15%. In vivo tests in orchards coupled with post-harvest treatments on fruit should allow to confirm the foreplay results in vitro.