Clivia Breeding Techniques and Control Methods for Bacterial Soft Rot

Bacterial soft rot is a common disease of clivia. The bacteria overwinter in diseased plant debris or soil, invade through wounds, and are spread by rainwater and irrigation water. During the clivia growing season, plants can be infected multiple times, with an incubation period of 2-3 days, and the disease mainly affects the leaves and stem. In the early stage of the disease, dark green water-soaked lesions appear on the leaves; the diseased tissue turns brown and soft-rotted, gradually spreading and expanding, and finally dries out and sinks, with all the leaves drooping. When the stem is affected, the stem becomes soft and rotted, causing the plant to collapse and die. The disease is usually most severe from June to August, and its occurrence is aggravated under conditions of high temperature and high humidity, excessive nitrogen fertilizer application, improper irrigation, poor ventilation and light penetration, and severe damage by scale insects.

Control methods: Minimize damage to the plants, control pests such as scale insects in a timely manner, strengthen management, and never pour water into the heart leaves of the clivia. Avoid rain exposure in summer, and use new soil when changing the potting soil. In the early stage of the disease, spray with 95% Xijunling at 600 times dilution, or apply agricultural streptomycin at 1000 times dilution to the diseased plants. Disinfect contaminated or used flower pots and tools with 40% formaldehyde at 40 times dilution. Cai Hongxia