What does the published scientific research say about Bacillus popilliae?

In that study, B. popilliae was isolated directly from naturally infected red palm weevil larvae and adults collected from Saudi agri-ecosystems, representing 26.1% of the bacterial isolates recovered. Researchers were screening eco-friendly microbial alternatives to synthetic insecticides, and both B. popilliae and Bacillus thuringiensis were among the candidates evaluated. The paper reports that both Bacillus species showed increasing virulence against R. ferrugineus immature stages at days 15–21 post-treatment, though specific mortality percentages for B. popilliae are not broken out separately in the available abstract.