Alternative measures for controlling mango seed weevil, Sternochetus mangiferae (F.).
Integrated pest management-compatible measures to control the curculionid Sternochetus mangiferae were studied on mangoes in South Africa during 1993-94. The onset, rate and duration of egg production were monitored in the field. Furthermore, curculionid eggs were screened for the presence of parasitoids, and mechanical devices such as sticky polybutene gum and Bug Stop® stem barriers were evaluated. Four strains of Beauveria bassiana were tested for their possible effect in controlling adults. The pattern of egg production in the field corresponded to a great extent with that of a caged population. No egg parasitoids were found. The stem barriers did not protect the fruit from infestation. In the laboratory, two strains of B. bassiana, (Naturalis-L (commercial product) and PPRI 5448), caused 30% mortality within 14 days. In an orchard, neither strain had an effect on S. mangiferae.