Biopesticidal efficacy of Devil's tree (Alstonia scholaris) on Wheat Weevil (Sitophilus granarius)

Abstract

This study highlights the significant biopesticidal potential of Alstonia scholaris against Sitophilus granarius, a major pest of stored wheat. The findings suggest that both crushed fresh leaves and bark of A. scholaris can effectively control pest populations, with mortality rates of 75.66% and 70.66% respectively within 96 hours. The dose and duration-dependent effects indicate the potential for A. scholaris-based bioinsecticides as an eco-friendly alternative to chemical pesticides in grain storage management. Further research on formulation and field application could enhance its practical use in pest control.