MySheen

How to control anthracnose of Phoenix tail orchid

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, Cymbidium anthracnose is a frequently-occurring disease of Cymbidium, which spreads very fast. if the disease is not controlled in time, it will not only affect the ornamental effect, but also lead to plant death. Now the symptoms, rules and prevention methods are introduced as follows: symptoms: first occurs at the tip of the leaf, the initial brown spot, then a round or irregular outward expansion, the spot is grayish brown, surrounded by a yellow halo, the surface is scattered with black particles, and the whole leaf is black after being infected. The regularity of onset: the disease is caused by

Cymbidium anthracnose is a frequently-occurring disease of Cymbidium, which spreads very fast. if the disease is not controlled in time, it will not only affect the ornamental effect, but also lead to plant death. The symptoms, regularity, prevention and treatment of the disease are introduced as follows:

Symptoms: first occurred at the tip of the leaf, the initial brown spots, and then showed a round or irregular outward expansion, the disease spot grayish brown, surrounded by yellow halo, the surface scattered with black particles, the whole leaf was black after infection.

The law of incidence: the disease occurred by the infection of Cercospora tequila, and the peak period was from mid-May to early October. The pathogen overwintered on the diseased leaves in the state of hyphae, conidia and sclerotia and spread by wind and rain. The disease is easy to occur under the conditions of high temperature, high humidity and no ventilation.

Control methods: 1, strengthen the management of water and fertilizer, enhance the tree potential, and improve the disease resistance of the plant; 2, pay attention to the selection of planting environment at the initial stage of planting, and the cultivation site should have a good ventilation environment; 3, remove the diseased leaves in time and burn them centrally. reduce the source of infection 4. Spraying 1000 times of 50% anthrax Fumei solution or 75% chlorothalonil wettable powder once a week for 3 times 4 times can effectively control the disease.

 
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