Laboratory Screening for Antibacterial Agents and Microorganism Preparation against Fire Blight

【Objective】 Fire blight (Erwinia amylovora) is one of the most devastating bacterial diseases of plant species in the Rosaceae family. Screening of the agents and microorganism preparation against fire blight bacteria can help prevent and control the disease. 【Method】 Thirty kinds of antibacterial agents and preparations were screened in the laboratory using the methods of minimum inhibitory concentration and bacteriostatic circle comparison. 【Result】 The results showed that among 30 kinds of agents, 1.8% symplectic bacteria amine acetate, 3% benziothiazolinone(ME) and 3% benziothiazolinone(WP) , 30% nonyl bacteria copper, 80% ethylicin, and the microorganism preparation Fluorescence pseudomonas 300 billion spores per gram were the agents and microorganism preparation with better bacteriostatic effects. 【Conclusion】 The antibacterial effects of different agents and different dosage forms of the same agent were significantly different. The six antibacterial agents obtained in this study can provide theoretical and practical basis for the quarantine control of fire blight.