Occurrence and control of soft rot of Cymbidium

Magnolia has an elegant and exquisite appearance, which is deeply loved by scholars at all times and both at home and abroad. Cymbidium is a kind of plant that is easy to survive, but it will inevitably "get sick." here are the ways.

Symptoms: Cymbidium soft rot mostly occurs in the middle and lower leaves of Cymbidium. The disease spot is yellow-green and transparent at first, then it turns brown and soft rot, the disease spot is irregular, and the boundary of healthy tissue is clear. There is bacterial overflow at the edge of the lesion, dry and sunken in the later stage, and the whole leaf falls off when it is serious.

Occurrence regularity: the pathogen of Cymbidium soft rot pathogen is a subspecies of soft rot Euclidean black rot bacteria. The pathogen overwintered on the host disease residue and plant debris, mostly infected from the wound, and occurred more seriously when it was damaged by high temperature, high humidity and scale insects.

Prevention and control methods: 1. Controlling soil moisture, ventilating and cooling, controlling scale insects and reducing mechanical wounds; 2. After the onset of the disease, you can use 15% agricultural streptomycin wettable powder 500 times liquid or 20% thiazolone (Longke bacteria) wettable powder 600 times liquid spray, once a week, 2 times a week for 3 times.