Biological control Chemical composition Composition and Quality of Non-food/Non-feed Plant Products Crops Horticultural Crops, (New March 2000) Natural pesticides Natural products Non-food/Non-feed Agricultural Products (General) Non-food/Non-feed Plant Products Pesticides and Drugs; Control, (New March 2000) Phytopathogenic microorganisms Plant composition Plant disease control Plant diseases Viral, Bacterial and Fungal Diseases of Plants, (New March 2000)