In African cacao-producing countries, control of cacao black pod disease caused by Phytophthora
megakarya is a priority. Introducing biological control agents as part of a P. megakarya control strategy
is highly desirable, especially in a perspective of pesticide reduction. Trichoderma species are among
the most used biological control agents. In Cameroon, Trichoderma asperellum formulated in wettable
powder has produced positive effects against this disease. However, with this type of formulation,
shelf-life and persistence of conidia on pods are limited. Our study therefore sought to develop a new
T. asperellum formulation that would be more effective and better suited to the conditions of field application
by small-scale producers in Cameroon