Biocontrol of Plant Pathogens Using Natural Products: A Study from Hong Kong

Abstract

Biological control of plant pathogens using natural products is gaining attention as a sustainable and eco-friendly alternative to chemical pesticides. This paper focuses on the use of natural plant extracts, essential oils, and microbial agents in controlling plant diseases in Hong Kong, particularly in high-value crops such as vegetables, fruits, and ornamental plants. The research evaluates the effectiveness of several biocontrol agents, including Bacillus subtilis, Trichoderma spp., and neem oil, in inhibiting the growth of fungal and bacterial pathogens. The study also discusses the potential of plant-based compounds, such as flavonoids and alkaloids, in preventing pathogen infection and enhancing plant immunity. The findings suggest that while natural products show promise in reducing plant disease incidence, challenges remain in standardizing formulations, scalability for commercial use, and consistency of results under field conditions. The paper concludes by recommending further research on the development of effective biocontrol products and their integration into integrated pest management (IPM) strategies.