Control Methods for Phytophthora Blight, a Disease of Cyclamen Pests and Diseases

An introduction to the symptoms and control methods of Phytophthora blight, a disease of cyclamen pests and diseases. Symptoms: the heart bud and the base of the plant are affected. In the early stage of infection, the plant's leaves droop, the petiole and peduncle tissue near the tuber fade and become constricted, and the leaves and flowers wilt and fall over. The heart bud turns brown and withers. After the underground tuber is infected, it rots and becomes gangrenous.

Ecology of the disease: generally, all cultivated varieties are highly susceptible. Bacteria carried by the mother plant or the growing medium, continuous rainfall, and excessively high soil moisture are the main causes that trigger the disease.

Control methods:

1. Tubers must be planted after the wounds have healed, and soaked in a chemical solution for protection before planting.

2. Use a pathogen-free growing medium, do not overwater, install rain-protection facilities, apply phosphorous acid or chemicals for controlling Phytophthora blight for protection, and always be careful to remove diseased plants.